CN105209341B - Apparatus and method for packaging products - Google Patents
Apparatus and method for packaging products Download PDFInfo
- Publication number
- CN105209341B CN105209341B CN201480026230.3A CN201480026230A CN105209341B CN 105209341 B CN105209341 B CN 105209341B CN 201480026230 A CN201480026230 A CN 201480026230A CN 105209341 B CN105209341 B CN 105209341B
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- China
- Prior art keywords
- precursor
- assembly
- plastic foil
- shape element
- pallet
- Prior art date
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- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Abstract
The invention discloses a method of packaging a product (P), the method comprising: driving at least a precursor body along an operating path in a machine direction, forming one or more longitudinal rows of adjacent tray-shaped elements (8) therein, loading one or more of said products (P) into respective cavities of said tray-shaped elements; forming through openings at corner regions of the tray-shaped elements; -tightly fixing a plastic film (11) to close the top opening of the tray-shaped element (8); the closed tray-shaped elements are separated laterally, thereby forming a closed tray. The invention also discloses a device (1) for carrying out the above method.
Description
Technical field
The present invention relates to the apparatus and method for packing product.According to some aspects, the present invention relates to for controlled
The apparatus and method of product are packed under atmosphere or under vacuo.According to other aspects, the present invention relates to for product skin packaging
(skin packaging)Apparatus and method.
Background technology
Plastic containers are generally used for food Package and for extensive various other articles, wherein for example by applying heat
So that vinyl cover is adhered into container.
In order to pack product, especially food product, vacuum packaging is developed in the past.
Among known vacuum-packing method, carry out sheathing foodstuff product usually using vacuum skin packaging, it is such as fresh
With the meat of freezing and fish, cheese, the meat through processing, ready meal etc..Vacuum skin packaging is for example in FR 1 258 357, FR
1 286 018、AU 3 491 504、US RE 30 009、US 3 574 642、US 3 681 092、US 3 713 849、US
It is described in 4 055 672 and US 5 346 735.
Vacuum skin packaging is substantially thermo shaping method.Specifically, product rigidity or half has been placed on typically just
Property support member(Such as pallet, bowl or cup)On.The support member that product is placed above is put in a vacuum chamber, in vacuum chamber
In, the thermoplastic film in the position above product that heating is placed by vacuum adsorption on support member is so that it softens.
Then the space between support member and film is emptied, and finally discharges the vacuum above film to cause film to be hanged downwards around product
Hang down and be sealed to the surface not covered by product of support member, so as to form close epidermis around product and on support member.
US 2005/0257501 discloses the machine of the product in pallet for packing arrangement.The machine, which has, to be used
In support pallet lower tool and with cutter device upper tool.During operation, clamped along the edge for surrounding pallet
Film, and make film upwardly-deformed in the side for extending outwardly away from product by upper tool.Then the space for surrounding product is emptied, diaphragm seal
With the edge of pallet, and then by cutter device cutting film.
On the machine as disclosed in US 2007/0022717 and US 2005/0257501, by means of being arranged on upper tool
On cutter device, film is cut into the size of the indoor pallet formed by upper tool and lower tool.First, it is unfavorable
It is that this needs to provide considerably complicated and bulky upper tool.In addition, disadvantageously, this is also needed to relative to the big of support member
It is small that excessive film is provided, the excessive film during packing method or at the end of cut and abandon from packing material.In fact, film
In the form of the continuous slice on roller is wrapped in(As shown in US 2005/0257501 Fig. 3).Therefore, it is necessary to which excessive film comes
Allow to pull out film from roller and it is held in position above the product supported.In addition, in US 2007/0022717
In, more than one product loading support member is packed in each circulation(That is, two), also to deposit between adjacent supporting piece
In excessive film.
DE102006022418 discloses a kind of equipment, and wherein diaphragm seal is cut into a certain size and is fixed to seal station
The upper rim portion of internal pallet.This solution needs the considerably complicated design of seal station, so that master control and operation are cut
Cutting blade.Furthermore, it is necessary to excessive film is to allow the sealing of film and cutting.Described provide passes through in addition in this bibliography
Valve on pallet side wall or the tubule operated by the gap between diaphragm seal and pallet upper rim portion.
WO2011/012652 shows the equipment for the product in packaging pallet.Machine includes the first film transfer plate, and first
Film transfer plate is arranged to hold film thin slice, heating film thin slice, film thin slice is taken to the pallet top for being disposed with product above
Position, and film thin slice is hermetically secured to pallet.The second film transfer plate also be present.Such as the first film transfer plate, the second film
Transfer blade is arranged to hold film thin slice, heating film thin slice, takes film thin slice to and is disposed with above above the pallet of product
Position, and film thin slice is hermetically secured to pallet.During the first operating procedure of machine, the first film transfer plate fixing first
Film thin slice and the first film thin slice of heating, and the second film transfer plate discharges the second film thin slice, thus allows the second thin slice pulling in the
In one pallet;And during the second operating procedure of machine, the second film transfer plate holds tertiary membrane thin slice and heating tertiary membrane is thin
Piece, and the first film transfer plate discharges the first film thin slice, thus allows to pull in the first film thin slice in the second pallet.Machine is further
Including the rotating cylindrical suitable for being rotated around its axis X, the first film transfer plate and the second film transfer plate are connected to rotating cylindrical,
During so that proper rotating cylindrical is around the rotation of its axis X, the place-exchange of the first film transfer plate and the second film transfer plate.Vacuum cloth
Permission is put from film thin slice(Positioned by the first film transfer plate or by the second film transfer plate)By existing in pallet in the pallet of lower section
One or more holes remove air.Film transfer plate is configured to discharge film thin slice, thus allows in vacuum arrangement out of pallet
Film thin slice is pulled in pallet while removing air.This solution has made it possible to significantly save membrane material, but will
Ask and film is cut into a certain size before film is sealed into pallet.
In addition to above solution, packaging facilities has also been developed, wherein pallet is the continuous bottom by plastic material
Portion's mesh is formed inline.The pallet of embedded formation is sealed after filled with appropriate product by continuous top-film.With
Afterwards, it is multiple sealing pallets by the cutting machine positioned at seal station downstream longitudinally(And if necessary, laterally)Separation.
In this equipment, bottom mesh corresponds to its vertical side of the edge and perforated.This is done to form hole, these holes are permitted
Perhaps correspond to seal station before top-film is fixed into pallet and air is removed from pallet.In addition, possesses gripping member
Chain when tray form guide bottom mesh from beginning to end along its path until be finally recovered.The lateral edges of perforation
Removed from pallet and cause mesh and membrane material produces the discarded object that can not ignore.
EP0293794 B1 disclose packaging facilities, wherein making the continuous slice shape of the plastic package material by chain conveying
As the cup-shaped receptacle for being mounted with product and being arranged with two rows side by side.Cut out by the plastics between continuous container pair
Emptying opening:Otch extends positioned at the centre of the horizontal wheel rim of two continuous pallets of connection and in cross-machine direction.Will modeling
Second continuous web of material packaging material is laid in the first mesh to cover filled container and be consequently formed packaging
Thing.The appropriately designed permission of seal station withdraws gas via opening from pallet and then fully seals pallet.This solution
Scheme requirement separates longitudinally adjacent pallet by the horizontal wheel rim of enough sizes, thus produces material waste.Note that as
The fruit pallet wheel rim relevant with opening is not repaired finally, then packaging pallet can also be presented to have and do not advised quite
The wheel rim of shape then.
DE 2161465 shows packaging facilities, and wherein pallet is connected by being directed to the continuous plastic web in the bottom of seal station
Formed continuously.Top diaphragm seal is longitudinally cut and applied to the row of pallet.Longitudinal cut realizes that air is withdrawn, and is withdrawing
After air, finally sealed at package assembly.It note that and top-film is longitudinally cut before actually pallet is sealed to
It may damage and guide the ability of top-film exactly and be bound to increase the complexity of seal operation.
In this case, it is an object of the invention to provide wherein form pallet inline and make packaging material simultaneously
The method and apparatus for abandoning minimum.
Another purpose, which is to provide, can rightly guide pallet and diaphragm seal to reduce(If not being avoided that)
Diaphragm seal mistakenly navigates to method and apparatus the problem of on pallet.
In addition, the auxiliary purpose of the present invention is that imagination can for skin packaging and for controlled atmospheric packing
The method and apparatus neatly operated.
Another object of the present invention be envisaged for using can heat shrink films or it is non-can heat shrink films pack product
Method and apparatus.
The content of the invention
One or more of above-mentioned purpose is essentially by the method according to any one of appended claims
Realized with equipment.The aspect of the present invention is disclosed below.
First aspect is related to a kind of product being used in packaging pallet(P)Equipment, the equipment includes:
- support frame, the support frame define courses of action;
- mesh supplies sub-assembly, and the mesh supply sub-assembly is related to the support frame and is configured for
It should be in the plastics precursor of plastic web form(precursor body);
- drive assembly, the drive assembly by the support frame carry and be arranged to make it is at least described before
Body is in machine direction(MD)On moved along courses of action;
- forming station, it is in the plastic web that the forming station, which is positioned in the courses of action and is configured to receive,
The precursor of form simultaneously forms several cavitys wherein;
- film supplies sub-assembly, and the film supply sub-assembly is configured to supply plastic foil;
- packages assembly, the packages assembly also position along the courses of action and are configured to receive the plastics
Film and the precursor, wherein the packages assembly is also arranged to fix the plastic foil to close the pallet shape element
Open top;
- separation sub-assembly, the path orientation of the separation sub-assembly along the packages assembly downstream and is configured
For being at least laterally separated the closure pallet shape element and forming closure pallet;
- cutting tool, the cutting tool correspond between mesh supply sub-assembly and the packages assembly
The area in included predefined path and act on the precursor, the cutting tool is arranged to the shape in the precursor
Into port.
In the second aspect according to first aspect, it is in the plastic web form that the forming station, which is configured to receive,
The precursor and form several cavitys wherein, several cavitys are positioned and are shaped so that under the forming station
Trip, the precursor include:
One or more lengthwise rows of adjacent trays shape element,
The longitudinal tape of every a line of pallet shape element is laterally limited,
Longitudinally limit and continuously combine the transverse belt of the adjacent trays shape element of same lengthwise rows, the transverse belt
The open top of the pallet shape element is further defined with the longitudinal tape and is intersected at multiple intersection regions.
According in the previously third aspect of any one of aspect, the cutting tool is configured and positioned to correspond to institute
State the side wall of each of pallet shape element and form one or more ports.
In the fourth aspect according to any one of the previous aspect from second aspect to the third aspect, the cutting tool
Be configured and positioned to correspond to multiple intersection regions between the longitudinal tape and the transverse belt and formed one or
Multiple ports.
In the 5th aspect according to previously any one of aspect, the equipment includes control unit, described control unit
It is configured and connects to operate at least described drive assembly, the forming station, the packages assembly and the cutting tool.
In in terms of according to the 6th any one of in terms of previous second aspect to the 5th in terms of, the forming station quilt
It is configured to be formed the plastics precursor of two or more parallel rows with pallet shape element.
In the 7th aspect according to previous aspect, each of described pallet shape element has by pallet shape member
The substantial rectangular open top that two longitudinal side walls of part and two lateral sidewalls define.
In the eighth aspect according to previous aspect, the transverse belt is vertically intersected with the longitudinal tape, so as to limit
The rectangular top opening, positioned with causing the intersection region to correspond to the corner regions of the pallet shape element.
In the 9th aspect of any one of precedent claims of the basis from second aspect to eighth aspect, the cutting
Instrument is positioned for acting in the plastics precursor and be arranged to form described lead at multiple intersection regions
Mouthful.
In the tenth aspect according to previous aspect, wherein cutting tool is configured to being removed in from the plastics precursor
The port of form of cut out portion be formed.
In the tenth one side one of in terms of according to first the first two, the cutting tool is configured to pair
Center line between two longitudinally adjacent pallet shape elements of Ying Yutong a line and remove the part of transverse belt to form each cut
Oral area point.
In the 12nd aspect according to first any one of first three aspect, the cutting tool is configured and positioned to make
Each of described cut out portion is obtained to be symmetrically positioned between two adjacent trays shape support members.
In the 13rd aspect according to any one of previous four aspects, the cutting tool is configured and positioned to make
Obtain shape of each of the described cut out portion in one of the following:
The triangle hole limited by three straight flanges or arc-shaped side, and
The tetragonal hole limited by four straight flanges or arc-shaped side.
According in the first fourteenth aspect of any one of first five aspect, the cutting tool is configured and positioned to make
Obtain the correspondence that the shape in the tetragonal hole limited by four straight flanges or arc-shaped side is formed at the center of the intersection region
Cut out portion.
In the 15th aspect according to previously any one of aspect, the packages assembly includes:
- lower tool, the lower tool include the bearing of predetermined quantity, and the bearing is each designed to receive
At least one of described pallet shape element, and
- upper tool, the upper tool is towards the lower tool and is arranged to assist with the lower tool
Make, at least one pallet shape element plastic foil being positioned in the bearing.
In the 16th aspect according to previously any one of aspect, wherein the packages assembly is additionally configured to tightly
The plastic foil is thickly fixed to close the open top of the pallet shape element, and comprising:
- lower tool, the lower tool include the bearing of predetermined quantity, and the bearing is each designed to receive
At least one of described pallet shape element, and
- upper tool, the upper tool is towards the lower tool and is arranged to assist with the lower tool
Make, at least one pallet shape element plastic foil being positioned in the bearing, and hermetically described in closure
Respective tops opening, so as to form one or more closure pallet shape elements.
In the 17th aspect any one of in terms of according to first the first two, the equipment includes at least one main actuating
Device, the main actuator are effective at least one of the upper tool and the lower tool(Active, or be
" working ").
In the 18th aspect according to previous aspect, wherein control unit is configured to operate the main actuator, with
So that the upper tool and the lower tool shift between the open position and the closed position, in the open position,
The upper tool and the lower tool separate and formed allow the pallet shape element being positioned in the bearing and
The plastic foil is positioned at the gap above the pallet shape element, in the closing position, the upper tool and institute
Lower tool is stated to abut and interact with each other so as to which the plastic film seal is held within the packages assembly
One or more of pallet shape elements above.
In the 19th aspect according to any one of previous four aspects, the upper tool includes being used to correspond to institute
The component for the part stated the active surface towards the lower tool of upper tool and hold the plastic foil.
In the 20th aspect according to previous aspect, the component for fixing is included by described control unit/control
The vacuum source of unit control processed, described control unit are arranged to activation for the component of fixing and caused described effective
Receive and hold the part of the plastic foil in surface.
According in first the 20th one side of any one of the first six aspect, flat effective of upper tool presentation
Surface, the surface is towards the lower tool and is arranged to receive and needs to be fixed to institute master control in the lower tool
A part for the plastic foil on the pallet shape element.
It is described in terms of according to the 22nd any one of in terms of the 15th aspect to previous in terms of the 20th
Cheese active surface is presented in upper tool, and the surface is towards the lower tool and is arranged to receive needs to be fixed to
A part for the plastic foil in the lower tool on the pallet shape element of institute's master control.
In the 23rd aspect any one of in terms of according to first the first two, wherein heater and the upper tool
It is related and controlled by control unit/described control unit, described control unit be arranged to control the heater so that
The active surface for obtaining the upper tool is at least up to included between 150 DEG C and 260 DEG C, optionally at 180 DEG C -240
Between DEG C, the temperature more optionally between 200 DEG C -220 DEG C.
It is described according in the twenty-fourth aspect any one of in terms of the 15th aspect to previous in terms of the 23rd
Several bottom wall portions and the several sidewall sections appeared from the respective bottom walls part in the bottom wall portion are presented in lower tool, with
Several bearings are defined, and one of wherein described sidewall sections carrying at least protuberance, the protuberance are positioned
Be arranged so that each protuberance is inserted when the pallet shape element is positioned in the corresponding bearing of the lower tool
Enter to being positioned in the corresponding port in one of described intersection region and above the pallet shape element in the dome
The side of shape active surface projects upwards.
It is described to set in the 25th aspect according to the previously aspect of aspect the 15th to any one of twenty-fourth aspect
Standby to have vacuum arrangement, the vacuum arrangement is connected to the lower tool and is arranged to out of described pallet shape element
Portion removes gas, and the vacuum arrangement includes at least one vacuum source and the port is connected at least the one of the vacuum source
Individual emptying circuit.
In the 26th aspect according to previously any one of aspect, control unit or described control unit are configured to
The vacuum arrangement is controlled so that withdrawing gas when the upper tool and the lower tool are in the closing position less
Body.
It is described to set in the 27th aspect according to the previously aspect of aspect the 15th to any one of the 26th aspect
Standby to have controlled atmosphere arrangement, the controlled atmosphere arrangement is connected to the lower tool and is arranged to inject gas stream
Into the inside of the pallet shape element, the controlled atmosphere arrangement includes at least one injection device and connected with by the port
To at least one injection circuit of the injection device.
According in the previously twenty-eighth aspect of any one of aspect, control unit or described control unit are configured to
The controlled atmosphere arrangement is controlled at least to be noted when the upper tool and the lower tool are in the closing position
Enter the gas stream.
In the 29th aspect according to previous aspect, the controlled atmosphere arrangement is configured to inject gas or gas
Mixture, the N that the gas or admixture of gas include2、O2And CO2One or more of amount with 20 DEG C and sea
Plane(1 atmospheric pressure)Atmosphere in the presence of these same gas amount it is different.
In the 30th aspect according to previous aspect, the equipment includes vacuum arrangement and the controlled atmosphere cloth
Both are put, and described control unit is configured to control the controlled atmosphere arrangement with pre- from being activated the vacuum arrangement
Reach after fixed delay or in the inside of the pallet shape element and started to inject the gas stream after predetermined vacuum level.
In the 30th one side according to previous aspect, described control unit is configured to control the controlled atmosphere cloth
Put and inject the gas stream to withdraw still afoot start simultaneously in the gas.
In the 32nd aspect according to first any one of first five aspect, described control unit is configured to operate institute
Vacuum arrangement is stated for removing gas in the inside of the pallet shape element, and produces pressure and is included in 0 millibar(mbar)With
Between 300 millibars, preferably between 50 millibars and 300 millibars, more preferably between 100 millibars and 250 millibars
Vacuum level.
In the 33rd aspect according to previously any one of aspect, each of described bearing is by bottom wall portion
Limited with the sidewall sections appeared from the respective bottom walls part, and wherein described at least one emptying circuit and/or at least one
Individual injection circuit leads to:
- be defined in the sidewall sections of each bearing and lead to the first groove of the inside of the bearing, and/or
- be defined in the bottom wall portion of each bearing and lead to the second groove of the inside of the bearing.
In the 34th aspect according to previously any one of aspect, the drive assembly includes first effective portion
Point, first live part is positioned at the packages assembly downstream on the both sides of the courses of action and is configured to grab
Hold the longitudinal direction side border of the longitudinal component for the precursor being longitudinally extended in the packages assembly downstream.It is in fact, described
The width of precursor is more than the width of the corresponding part of the plastic foil, with cause first live part engage the precursor but
The longitudinal direction side border of the plastic foil is not engaged directly, the plastic foil is based on the plastic foil in the packages assembly
Downstream is with being fixed to the precursor true and is pulled by the precursor.The drive assembly be configured so that the precursor and
It is free and not by the drive assembly that longitudinal side circle of the plastic foil, which corresponds to the packages assembly,
Any part engages.This means first live part and any other drive member all do not correspond to the packaged combination
Part and the longitudinal direction side border for grasping the precursor and the plastic foil.
In the 35th aspect according to previous aspect, the drive assembly is configured so that the institute of the precursor
Stating longitudinal side circle is free corresponding to the cutting tool and is not engaged by any part of the drive assembly.This meaning
Taste first live part and any other drive member does not all correspond to the area that wherein described cutting tool is operated
And grasp the longitudinal direction side border of the precursor.
It is described in terms of according to the 36th any one of in terms of previous first aspect to the 33rd in terms of
Drive assembly includes the first live part, and first live part is positioned at the bag on the both sides of the courses of action
Dress sub-assembly downstream and the longitudinal portion for being configured to the plastic foil that grasping is longitudinally extended in the packages assembly downstream
The longitudinal direction side border divided:In fact, the width of the plastic foil is more than the width of the corresponding part of the precursor, it is described to cause
First live part engages the plastic foil but does not engage the longitudinal direction side border of the precursor directly.The drive assembly
It is freely to be also configured such that longitudinal side circle of the precursor and the plastic foil corresponds to the packages assembly
And not by the drive assembly any part engage.This means first live part and any other driving structure
Part does not all correspond to the packages assembly and grasps the longitudinal direction side border of the precursor and the plastic foil.
In the 37th aspect according to previous aspect, the drive assembly is configured so that the institute of the precursor
Stating longitudinal side circle is free corresponding to the cutting tool and is not engaged by any part of the drive assembly.This meaning
Taste first live part and any other drive member does not all correspond to the area that wherein described cutting tool is operated
And grasp the longitudinal direction side border of the precursor.
It is described in terms of according to the 38th any one of in terms of previous first aspect to the 33rd in terms of
Drive assembly includes the first live part, and first live part is positioned at the bag on the both sides of the courses of action
Fill sub-assembly downstream, and be configured to grasping the plastic foil that the packages assembly downstream is longitudinally extended and it is described before
The longitudinal direction side border of the longitudinal component of body.In this case, the drive assembly is configured so that the precursor and institute
State plastic foil longitudinal side circle correspond to the packages assembly be free and not by the drive assembly appoint
What part engages.This means first live part and any other drive member all do not correspond to the packages assembly
And grasp the longitudinal direction side border of the precursor and the plastic foil.
In the 39th aspect according to previous aspect, the drive assembly is configured so that the institute of the precursor
Stating longitudinal side circle is free corresponding to the cutting tool and is not engaged by any part of the drive assembly.This meaning
Taste first live part and any other drive member does not all correspond to the area that wherein described cutting tool is operated
And grasp the longitudinal direction side border of the precursor.
In in terms of according to the 40th any one of in terms of previous first aspect to the 33rd in terms of, the drive
Dynamic sub-assembly includes the first live part, and first live part is positioned on the both sides of the courses of action and is configured to
Grasping:
On the longitudinal direction side border of the longitudinal component for the plastic foil that the packages assembly downstream is longitudinally extended, and
The longitudinal direction side border of the longitudinal component for the plastic foil being longitudinally extended corresponding to the packages assembly.
In fact, the width of the plastic foil is more than the width of the corresponding part of the precursor, to cause described first to have
Effect part engages the plastic foil but does not engage the longitudinal direction side border of the precursor directly.
Therefore, the drive assembly is configured so that longitudinal side circle of the precursor corresponds to the packaging
Sub-assembly is free and not engaged by any part of the drive assembly.This means in this case, described
One live part and any other drive member do not grasp the longitudinal direction side border of the precursor and first effective portion
Divide and only grasp the plastic foil.
In the 40th one side according to previous aspect, the drive assembly is configured so that the institute of the precursor
Stating longitudinal side circle is free corresponding to the cutting tool and is not engaged by any part of the drive assembly.This meaning
Taste first live part and any other drive member does not all correspond to the area that wherein described cutting tool is operated
And grasp the longitudinal direction side border of the precursor.
In the 42nd aspect any one of in terms of according to first the first two, the drive assembly is configured so that
First live part also grasps the plastic foil extended between film supply sub-assembly and the packages assembly
Longitudinal component longitudinal direction side border;Substantially in this case, the plastic foil is only made from outlet driving to the supply
All the way through the packages assembly and the arrival packages assembly downstream outside sub-assembly.
In the 43rd aspect according to previously any one of aspect, the drive assembly includes second effective portion
Point, second live part be positioned on the both sides of the courses of action forming station and the packages assembly it
Between, and it is configured to a part for the precursor that grasping is longitudinally extended between the forming station and the packages assembly
Longitudinal direction side border.
In the 44th aspect according to previous aspect, the drive assembly is configured so that the institute of the precursor
Stating longitudinal side circle is free corresponding to the forming station and is not engaged by any part of the drive assembly.
It is described in terms of according to the 45th any one of in terms of previous first aspect to the 42nd in terms of
Drive assembly includes the second live part, and second live part is positioned at the confession on the both sides of the courses of action
Answer between sub-assembly and the packages assembly, and be configured to grasping from the forming station being included, and the bag
The lateral boundaries of a part for the precursor that dress sub-assembly is longitudinally extended.
In in terms of according to the 46th any one of in terms of the 34th aspect to previous in terms of the 45th,
The drive assembly includes:
- at least one elongated driving body on each side of the courses of action, wherein each elongated driving is originally
Body is installed to the support frame, so as to define the closed path with driving branch and returning branch;
- multiple grasping devices, the multiple grasping device is by elongated driving body carrying and is configured to grasp the precursor
And/or the relative longitudinal direction side border of the plastic foil;And
- at least motor, the motor are connected to the driving body and controlled by described control unit/control unit,
Described control unit is configured to operate the motor so that the elongated driving body moves along the closed path, wherein institute
State that driving branch is mobile according to the machine direction and the returning branch and the machine direction relative to and move.
In the 47th aspect according to previous aspect, each slender body is configured to make in the closed path
The driving branch of the slender body continuously includes the first fragment, first segment root is lower according to this configure in one
Person and extend:
- in the packages assembly downstream parallel to the courses of action;
- at the packages assembly and in the packages assembly downstream parallel to the courses of action;
- supplied in the film between sub-assembly and the packages assembly transverse to the courses of action, and in the bag
Fill at sub-assembly and in the packages assembly downstream parallel to the courses of action,
First live part of wherein described drive assembly includes the grasping carried by first fragment
Element.
In the 48th aspect according to previous aspect, the grip element carried by first fragment is adapted
Into the lateral boundaries for grasping the precursor, the lateral boundaries of the precursor are longitudinally located in the packages assembly downstream.
In the 49th aspect any one of in terms of according to first the first two, grabbed as described in first fragment carrying
Element is held to be adapted to only in the packages assembly downstream, or at the packages assembly and in the packages assembly
Downstream, or supplied in the film between sub-assembly and the packages assembly and at the packages assembly and in the packaging
Sub-assembly downstream, grasp the lateral boundaries of the plastic foil.
In the 50th aspect according to first any one of first three aspect, wherein the slender body is on the closure road
The driving branch of the slender body is configured so that in footpath continuously includes the second fragment, and second fragment is parallel
The cutting tool upstream at least is extended to from the forming station downstream in the courses of action, wherein by described second
The grip element of fragment carrying is adapted to grasping and is longitudinally extended between the forming station and the packages assembly
The precursor the longitudinal direction side border;
Second live part of wherein described drive assembly includes the grasping carried by second fragment
Element.
In the 50th one side according to previous aspect, the driving branch of the slender body continuously includes the
The downstream of second fragment is connected to the upstream end of first fragment by three fragments, the 3rd fragment, and the described 3rd
Fragment along correspond to the packages assembly and optionally correspond to the cutting tool and with the courses of action sufficiently every
The track extension opened, the grip element carried whereby by the 3rd fragment at least correspond to the packages assembly and appointed
Selection of land corresponds to the cutting tool and neither engages the longitudinal direction side border of the precursor nor engage the plastic foil
The longitudinal direction side border.
In the 52nd aspect according to first any one of first five aspect, the driving branch of the slender body
Continuously include the 4th fragment, the 4th fragment is at least prolonged always parallel to the courses of action from the supply sub-assembly
The forming station upstream is reached, wherein the grip element carried by the 4th fragment is adapted to grasping in the supply
The longitudinal direction side border for the precursor being longitudinally extended between sub-assembly and the forming station;Wherein described drive assembly
Second live part include by the 4th fragment carry the grip element.
In the 53rd aspect according to previously aspect, the drive assembly includes the 5th fragment, described 5th
The downstream of 4th fragment is connected to the upstream end of second fragment by section, the 5th fragment along correspond to it is described into
Shape station and the track that fully separates with the courses of action extends, the grip element carried whereby by the 5th fragment
At least correspond to the longitudinal direction side border of the forming station without engaging the precursor.
In the 54th aspect according to previously any one of aspect, the cutting tool is positioned at the packaged combination
The tight upstream of part.
In the 55th aspect according to previously any one of aspect, comprising being arranged to perform the control circulated below
Unit processed:
The forming station is ordered to form in the form of the plastic web pallet shape element to coming from the supply
In the precursor of sub-assembly;
Order the drive assembly to move the precursor in stepwise fashion to be formed with making a reservation for sequentially to produce
The packages assembly part of the precursor of the pallet shape element of quantity;
The cutting tool is ordered to correspond to included between mesh supply sub-assembly and the packages assembly
The predefined path area and act on the precursor, and form the port;
The packages assembly is ordered to go to the closing position from the open position,
The vacuum arrangement is optionally ordered to remove gas, and/or the order controlled atmosphere arrangement injection gas or gas
Body mixture,
The pallet for ordering the packages assembly to be closely fixed to the plastic foil in the packages assembly
Shape element,
Order the separation sub-assembly to be laterally separated the closure pallet shape element and form several closure pallets.
In the 56th aspect according to previously any one of aspect, the film supply sub-assembly is configured to supply bag
Include at least film of first gas permeable layers and second gas impermeable barrier.
In the 57th aspect according to previous aspect, the gas impermeable barrier is removably attached to underlying
Gas-permeable layer.The gas impermeable barrier can be then removed after the packaging by user.
In the 58th aspect, the gas-permeable layer is oxygen permeable layer, and the gas impermeable barrier
For oxygen impermeable barrier.
In the 59th aspect according to previously any one of aspect, the equipment includes the second packages assembly, institute
The second packages assembly is stated in packages assembly(It is referred to as the first packages assembly in this case)Downstream process and it is configured
Into using the second plastic foil.
In the 60th aspect, the packages assembly is arranged to using the first film with the pallet shape element
Epidermis is formed above the product P contained by portion, and second packages assembly is configured in the pallet shape element
Top on using the second film to produce:
- between second film and first film have standard atmospheric pressure lid;
- there is the lid for being modified atmospheric pressure between second film and first film;
- another epidermis formed by the second film and the first film.
In the 60th one side according to previous aspect, the second cutting tool is effective on the pallet shape element
, the pallet shape element has received the film, but not yet receives second plastic foil, so as to formed with from first aspect to
Another port of the opening described in any one of aspect of fourteenth aspect similarly type.Second cutting
Instrument will be in the downstream of packages assembly 20, but in the second packages assembly upstream, preferably in the described second packaging
The tight operating upstream of sub-assembly.
62nd aspect is related to a kind of packaging product(P)Method, methods described optionally using according to previously for the use of
Any one of equipment, the described method comprises the following steps:
- supply is in the plastics precursor of plastic web form;
- drive at least described precursor in the direction of the machine along courses of action;
- receive in the plastic web form the precursor, and formed wherein several cavitys with cause it is described before
Body includes:
One or more lengthwise rows of adjacent trays shape element,
The longitudinal tape of each of the row of pallet shape element is laterally limited,
Longitudinally limit and continuously combine the transverse belt of the adjacent trays shape element of same lengthwise rows, the transverse belt
The open top of the pallet shape element is limited with the longitudinal tape and is intersected at multiple intersection regions;
- by the product(P)One or more of be loaded into the respective cavities of the pallet shape element;
- supply plastic foil;
- fixed(Preferably, tightly hold)The plastic foil is to close the institute of the pallet shape element of the precursor
State open top;
- the closure pallet shape element is laterally separated, it is consequently formed the closure pallet or tray set of separation;
- before the plastic foil is fixed into the pallet shape element, formation corresponds to the precursor and positioned and is logical
Mouthful.
In the 63rd aspect according to previous aspect, forming the port for corresponding to the precursor and positioning includes corresponding to
Port is formed at least one of the following:
The side wall of each of the pallet shape element, and
Multiple intersection regions between the longitudinal tape and the transverse belt.
In the 64th aspect any one of in terms of according to first the first two, including formed with pallet shape element two
The plastics precursor of individual or more parallel row, wherein:
Each of-described pallet shape element has two longitudinal side walls and two horizontal strokes by the pallet shape element
The substantial rectangular open top defined to side wall, and
- the transverse belt is vertically intersected with the longitudinal tape, so as to limit the rectangular top opening, to cause
Intersection region is stated to position corresponding to the corner region of the pallet shape element.
In the 65th aspect according to previous aspect, wherein forming port is included in shape at multiple intersection regions
Into the port.
In the 66th aspect according to first any one of first three aspect, the port is shaped as in cut out portion
Form, the cut out portion is removed by the center line between two longitudinally adjacent pallet shape elements corresponding to same a line
A part for transverse belt comes what is removed from the plastics precursor.
In the 67th aspect according to previous aspect, each of described cut out portion is symmetrically positioned at two
Between adjacent trays shape support member.
In the 68th aspect any one of in terms of according to first the first two, each of described cut out portion be in by
One of rectangular apertures that three straight flanges or arc-shaped side limit or the tetragonal hole that is limited by four straight flanges or arc-shaped side
Shape.
In in terms of according to the 69th any one of in terms of the 62nd aspect to previous in terms of the 68th,
Including:
- correspond to corresponding pallet shape element and hold a part for the plastic foil above it,
- part of plastic foil is heated at least to including between 150 DEG C and 260 DEG C, optionally 180 DEG C-
Between 240 DEG C, the temperature more optionally between 200 DEG C -220 DEG C,
- from the inside of the pallet shape element remove gas.
Any one of in terms of according to previous from the 62nd aspect to the 69th aspect the 70th in terms of in, wrap
Include:
- gas or admixture of gas are injected into the inside of the pallet shape element with pallet shape member
Part is internally formed controlled atmosphere;
The N that wherein described gas or admixture of gas include2、O2And CO2One or more of amount with 20 DEG C
And sea level(1 atmospheric pressure)Atmosphere in the presence of these same gas amount it is different.
In the 70th one side any one of in terms of according to previous from the 62nd aspect to the 70th aspect, wrap
Include and the plastic foil is closely fixed to respective trays shape element.
Any one of in terms of according to previous from the 62nd aspect to the 70th one side the 72nd in terms of in,
The precursor is driven to include:Corresponding to wherein described precursor regularly received a part for the plastic foil and grasp it is described before
The longitudinal direction side border of body, while correspond to longitudinal side circle of the precursor and wherein carry out the plastic foil to the support
A part for the precursor of the fixation of disc-shaped element and keep freely.
In in terms of according to the 73rd any one of in terms of the 62nd aspect to previous in terms of the 72nd,
Drive the precursor to include regularly having received a part for the plastic foil corresponding to wherein described precursor and grasp it is described before
The longitudinal direction side border of body, while correspond to longitudinal side circle of the precursor and wherein carry out the plastic foil to the support
The fixation of disc-shaped element(Wherein carry out the shaping of the port)The precursor a part and keep freely.
Any one of in terms of according to previous from the 62nd aspect to the 70th one side the 74th in terms of in,
The width measured perpendicular to the machine direction of the plastic foil is more than the width of the down-set portion of the precursor.This
In the case of, drive the precursor to include regularly having received a part for the plastic foil corresponding to wherein described precursor and having grasped
The longitudinal direction side border of the plastic foil:The precursor is not grasped and it is of prime importance that makes the longitudinal direction side border of the precursor
Break away from and remove corresponding to a part for the precursor for wherein carrying out the fixation of the plastic foil to the pallet shape element
Any gripping member being attached to beyond the plastic foil.
In the 75th aspect according to previous aspect, longitudinal side circle of the precursor is set to correspond to wherein to enter
A part for the precursor of the formation of the row port and break away from any gripping member.
In the 76th aspect any one of in terms of according to first the first two, wherein driving the precursor to include corresponding to
The following and the longitudinal direction side border for grasping the plastic foil:
- wherein described precursor has regularly received a part for the plastic foil being longitudinally extended of the plastic foil,
A part for-the plastic foil being longitudinally extended at the packages assembly, and
- optionally, in the film supply thing and fixed to the institute being longitudinally extended between the plastic foil of the precursor
A part for plastic foil is stated,
Simultaneously correspond to longitudinal side circle of the precursor and wherein carry out the plastic foil to pallet shape member
The fixation of part and optionally wherein carry out the port the formation the precursor a part and keep freely.
Any one of in terms of according to previous from the 62nd aspect to the 70th one side the 77th in terms of in,
Drive the precursor to include regularly having received a part for the plastic foil corresponding to wherein described precursor and grasp it is described before
The longitudinal direction side border of body and the plastic foil, while correspond to longitudinal side circle of the precursor and wherein carry out the modeling
Expect film to the precursor of the fixation of the pallet shape element and the formation for optionally wherein carrying out the port
A part and keep freely.
In in terms of according to the 78th any one of in terms of the 62nd aspect to previous in terms of the 77th,
Drive a part for the formation of the precursor including not yet receiving the port corresponding to wherein described precursor and grasp institute
The longitudinal direction side border of precursor is stated, while corresponds to longitudinal side circle of the precursor and wherein carries out the described of the port
Formed the precursor a part and keep freely.
In in terms of according to the 79th any one of in terms of the 62nd aspect to previous in terms of the 78th,
The precursor is driven to include corresponding to one that wherein described precursor is still in plastic web form before the cavity is formed
Divide and grasp the longitudinal direction side border of the precursor, while longitudinal side circle of the precursor is corresponded to described in wherein progress
A part for the precursor of the formation of cavity and keep freely.
In in terms of according to the 80th any one of in terms of the 62nd aspect to previous in terms of the 79th,
After several cavitys are formed in the precursor and define the adjacent trays shape element, by being arranged to the modeling
Material film is closely fixed to the cutting tool of the package station operating upstream of the pallet shape element in the pallet shape element
The port is produced in the side wall of each.
According in the 80th one side any one of in terms of the 62nd aspect to previous in terms of the 80th,
After several cavitys are formed in the precursor and define the adjacent trays shape element, by being arranged to the modeling
Material film is closely fixed to the cutting tool of the package station operating upstream of the pallet shape element in the longitudinal tape and the horizontal stroke
The port is produced into multiple intersection regions between band.
The 82nd aspect in, methods described use according to from first aspect to the 60th one side previously in terms of in
The equipment of any one.
Brief description of the drawings
Refer to the attached drawing, provide by way of example, and not limitation described in detail below by reading, the present invention will become
It is clearer, in accompanying drawing:
Fig. 1 is laid out according to the perspective schematic view of the first equipment of each side of the present invention.
Fig. 2 is laid out according to the perspective schematic view of the second equipment of each side of the present invention.
Fig. 3 A are laid out according to the perspective schematic view of the 3rd equipment of each side of the present invention.
Fig. 3 B schematically show the layout of the 4th equipment according to each side of the present invention.
Fig. 3 C schematically show the layout of the 5th equipment according to each side of the present invention.
Fig. 3 D are the schematic cross-sections of the part positioned at the exit of packages assembly of Fig. 3 C equipment.
Fig. 3 E schematically show the layout of the 6th equipment according to each side of the present invention.
Fig. 4 is the enlarged drawing of the details of equipment shown in Fig. 1.
Fig. 5-7 is the part according to the precursor of the pallet shape element for showing to possess port of each side of the present invention
Perspective view.
Fig. 8-10 schematically shows packages assembly, and the packages assembly can be used for any one of Fig. 1 to Fig. 3
Shown equipment;The figure is related to the sequential steps followed by packages assembly according to each side of the present invention.
Figure 11 is schematically showing for the variant of Fig. 8-10 packages assembly.
Figure 12 is the perspective view for the pallet that apparatus and method as described herein can be used to obtain.
Figure 13 is that the chain has to be set with any one of Fig. 1 to Fig. 3 by the perspective view of the grasping device of chain carrying
Standby related drive assembly.
Figure 14 is the side view of the grasping device shown in Figure 13.
Figure 15 is the cross section of section XV-XV interceptions represented along Figure 14.
Figure 16 is the cross section similar with Figure 15 cross section, shows engage gear and grasping device in an open position
Chain.
Figure 17 is the side view of the variant for the grasping device that can be replaced the grasping device shown in Figure 13 and use.
Figure 18 is the cross section of section XVIII-XVIII interceptions represented along Figure 17.
Figure 19 is the cross section similar with Figure 18 cross section, shows engage gear and grasping device in an open position
Chain.
Figure 20 shows the cross section of the gear parts of the drive assembly according to each side of the present invention.
Figure 21 is the front view of Figure 20 gear.
Figure 22 is the perspective view of Figure 20 gear.
Embodiment
Definition and convention
It should be pointed out that in the detailed description of the present invention, the corresponding part shown in each accompanying drawing is with identical in different figures
Reference number indicate.It should be noted that accompanying drawing be not in proportion and therefore the part shown in it and component are to show
Meaning property represents.
It is described below with following claims, apparatus and method refer to package the product in support member or pallet
Portion:The product can be that food product may not be.
As used herein:
- " pallet " refers to the appearance with bottom wall, side wall and type optionally with the apical margin radially appeared from side wall
Device;The pallet has rectangular shape or any other suitable shape, circular, square, oval etc.;When pallet has
Rectangle or when having square configuration, the corner region of pallet can be circular;
- " courses of action " are the paths followed by plastics precursor during packing method;
- " machine direction " is precursor along courses of action from supply sub-assembly to the direction of advance for separating sub-assembly;" processing side
To " be identified as MD on drawing board and be horizontal in example as described herein;
- " downstream " and " upstream " refer to equipment component sub-assembly or station relative to machine direction relative position;
- " band " refers to the transverse belt or longitudinal tape of plastic material, and they are defined on precursor and intersected to limit
The open top of the cavity for the pallet shape element being formed in precursor;These bands have elongate configuration, and depending on the shape of cavity
Shape and can present can not also be presented virtually constant width(The width of longitudinal tape is perpendicular to machine direction and measured, and
The width of transverse belt is parallel to machine direction and measured).For example, if these cavitys have the open top of complete rectangle,
So longitudinal tape and transverse belt are by for the substantial straight band with constant width.There is these cavitys band circle to turn wherein
In the case of the substantial rectangular at angle or substantially square open top(As in the example of accompanying drawing), then these bands
Width increase at the intersection region that transverse belt is intersected with longitudinal tape.
Pallet or support member
Pallet described and claimed herein can be before one or more products be loaded in pallet cavity by interior
The individual layer that is formed to embedded is preferably made up of multiple layer of polymeric material.
In the case of monolayer material, suitable polymer is, for example, polystyrene, polypropylene, polyester, high-density polyethylene
Alkene, poly- (lactic acid), PVC etc., are foam-like or solid.
Material pallet can possess gas barrier property.As used herein, such term refers to that oxygen transmission rate is less than 200
Cm3/m2- days-bars, material membrane or material sheet less than 150 cm3/m2- days-bars, less than 150 cm3/m2- days-bars,
The oxygen transmission rate is to be measured according to ASTM D-3985 under 23 DEG C and 0% relative humidity.
Material suitable for gas barrier monolayer thermoplastic's pallet is, for example, polyester, polyamide etc..
In the case where multilayer material is used to form pallet, suitable polymer be, for example, Alathon and copolymer,
Noblen and copolymer, polyamide, polystyrene, polyester, poly- (lactic acid), PVC etc..The a part of of multilayer material can be
Solid and a part can be foam-like.
For example, material pallet can include at least one of the foam-like polymeric material selected from the group being made up of the following
Layer:Polystyrene, polypropylene, polyester etc..
All layers can be coextruded by using coextrusion technology or by using film(Commonly referred to as " lining
In ")Glue-line pressure or heat lamination are carried out to produce multilayer material to such as rigid foams shape or solid substrate.
It can enter on the side contacted with product P of pallet or on the side back to product P or on this both sides to film
Row lamination.In the latter case, the film being laminated on the both sides of pallet can be the same or different.Optionally, example be present
Such as the oxygen barrier material layer of (ethene -co- vinyl alcohol) copolymer to increase packaging product P storage period.
Gas barrier polymer available for gas-barrier layer is PVDC, EVOH, polyamide, polyester and its admixture.Will
The thickness of setting gas-barrier layer is applied to the oxygen transmission rate of particular packaged product to be provided for pallet.
Material pallet can also include heat salable layer.In general, the heat salable layer will be in polyolefin(Such as ethene is equal
Polymers or copolymer, Noblen or copolymer, ethylene/vinyl acetate copolymer, ionomer)With equal polyester and copolyesters
(For example, PETG, glycol-modified PET)It is central to be selected.
To make gas-barrier layer preferably adhere to adjacent layer, the additional layer of such as adhesion coating may reside in for pallet
Gas barrier material in, and preferably particularly depend on for the specific resin of gas-barrier layer and exist.
In the case of the multilayer material for forming pallet, a part of of this structure can be foam-like and one
It can be non-foam to divide.For example, pallet can include(From outermost layer to most interior food contact layer):One or more structures
Layer, the typically material with material such as foamed polystyrene, foam polyester or foam polypropylene;Or slab, have for example
Polypropylene, polystyrene, poly- (vinyl chloride), polyester or cardboard;Gas-barrier layer and heat salable layer.
Pallet as described herein can be obtained from the foam-like sheets of polymer material with film, the film is included at least
One oxygen barrier layer and at least one surface encapsulation layer, the surface encapsulation layer are in turn laminated to towards the packaging side for obtaining product
On, to cause the surface encapsulation layer of film as the food contact layer of pallet.Can be by the second film(Barrier or non-barrier)It is laminated to support
On the outer surface of disk.
Specific material pallet formula is used to need the food production heated in convention furnace or micro-wave oven before consumption
Product.The surface contacted with product of container(I.e. using covering involved surface when film forms seal)Including polyester resin.
For example, container can be made up of the cardboard for being coated with polyester, or container can be integrally formed as by polyester resin.Suitable for the present invention's
The example of the container of packaging is CPET, APET or APET/CPET container.Such container can be that foam-like can also be non-bubble
Foam shape.
There is the gross thickness less than 8 mm, and example for the material pallet of the capping containing foam-like part or fit application
Such as can be between 0.5 mm and 7.0 mm and more frequently between 1.0 mm and 6.0 mm.
In the case where not containing the rigid tray of foam-like part, the gross thickness of single or multiple lift thermoplastic is preferred
Ground is less than 2 mm, and for example can be between 0.1 mm and 1.2 mm and more frequently between 0.2 mm and 1.0 mm.
Plastic foil
Plastic foil described and claimed herein can be used for cap-shaped on pallet(For example, for MAP --- controlled atmosphere
For packaging)Or the epidermis of outline related to pallet and with product.
Film for fit application can be made up of flexible multi-layered material, and the flexible multi-layered material is included outside at least first
Heat salable layer, optional gas-barrier layer and the second outside refractory layer.Outer heat-sealable layers can include that carrying can be welded to
The polymer of the inner surface of the support member of product to be packaged, such as Alathon or copolymer(Such as LDPE), ethylene/alpha-olefin
Hydrocarbon copolymer, ethylene/acrylic acid copolymer, ethylene/methacrylic acid and ethylene/vinyl acetate copolymer, from
Polymers, copolyesters example, such as PETG.Optional gas-barrier layer preferably includes the impermeable resin of oxygen, such as PVDC,
EVOH, polyamide and EVOH and polyamide admixture.Outside refractory layer can be by Alathon or copolymer, ethene/ring
Olefin copolymer(Such as ethene/norbornene copolymer), it is Noblen or copolymer, ionomer, (common) polyester, (common) poly-
Acid amides is made.Film can also include such as other of adhesion coating or body layer layer with increase the thickness of film and improve film abuse and
Deep-draw property.Specifically used body layer is ionomer, ethylene/vinyl acetate copolymer, polyamide and polyester.It is all this
In a little film layers, polymers compositions can the additive containing the appropriate amount generally included in such composition.These additives
In some be preferably included in outer layer or one of these outer layers in, and some other be preferably added to internal layer.
These additives include slip agent and anti-blocking agent, talcum powder, wax, silica etc.;Antioxidant;Stabilizer;Plasticizer;Fill out
Fill agent;Pigment and dyestuff;Cross-linked inhibitor;Crosslinking enhancer;UV absorbents;Odour absorbents;Oxygen scavenger;Bactericide;
Antistatic additive, and similar additive known to the technical staff in packaging film field.
One or more layers of film can be crosslinked to improve film strength and/or its heat resistance.Can be by using change
Learn additive or by making film layer carry out energy radiation treatment to realize crosslinking.Film for skin packaging typically manufactured with
Lower shrinkage when just showing to heat during packaging recycle.On longitudinal direction and horizontal direction, those films are generally at 160 DEG C
Shrink and be less than 15%, more frequently less than 10%, or even be more frequently less than 8%(ASTM D2732).The thickness of these films generally exists
Between 20 microns and 200 microns, more frequently between 40 microns and 180 microns, and even more frequently at 50 microns and 150
Between micron.
Skin packaging thing is typically " easily upon opening ", you can easily manually to pull open two meshes to beat
Them are opened, generally since the point at the turning of such as packing material, wherein top mesh is intentionally not yet sealed to support member.For
This feature is realized, suitable composition can be provided for film or pallet, so as to allow to open packing material, such as ability easily
It is known in domain.Typically, the composition of encapsulant composition and/or the adjacent layer of pallet and/or film is adjusted to realize easy opening
Feature.
When opening easily upon opening packing material, various mechanisms may be present.
In the first mechanism(" strippable property is easily opened ")In, packed by making film be separated with pallet at sealed interface to open
Thing.
In the second mechanism(" cohesion failure ")In, by the initial collapse of the thickness through one of sealant, then
This layer is set to be layered with underlying support member or film to realize the opening of packing material.
3rd system is to be based on " cohesional failure " mechanism:Easy opening characteristics is realized by the internal rupture of sealant,
During the opening of packing material, sealant is along parallel to the layer plane fracture of itself.
Specific admixture is known in the art for obtaining such opening mechanism, it is ensured that film is peeled off from tray surface, all
Admixture described in the EP1084186.
On the other hand, if film is used to produce lid on pallet, then can be obtained by coextrusion or laminating method
Membrane material.Epiphragma can have symmetrical or asymmetrical structure and can be that individual layer can also be multilayer.
Multilayer film has at least two, is more frequently at least five, or even is more frequently at least seven layer.
The gross thickness of film can be or even more frequently micro- from 10 from 3 microns to 100 microns, especially from 5 microns to 50 microns
Rice changes to 30 microns.
These films can be with optionally cross-linked.Can be by using under the Suitable dosage levels that high energy electron is known in the art
Radiated to perform crosslinking.Epiphragma described above can be pyrocondensation or heat setting.In longitudinal direction and horizontal direction
On, heat shrinkage film typically shows the free shrink value in following scope measured according to ASTM D2732 at 120 DEG C:2% arrives
80%, it is more frequently 5% to 60%, or even be more frequently 10% to 40%.On longitudinal direction and horizontal direction, heat setting film
There is less than 10%, be preferably lower than 5% free shrink value generally at 120 DEG C(ASTM D 2732).Epiphragma generally include to
Few heat salable layer and external cuticle layers, the external cuticle layers are typically made up of heat-resistant polymer or polyolefin.Sealant typical case
Ground includes heat-sealable polyolefins, and the heat-sealable polyolefins include single polyolefin or two or more polyolefin again(It is all
Such as polyethylene or polypropylene or its admixture)Admixture.Technological means well known in the art can further be passed through
One or more antimist additiveses are made to be attached in its composition or by the way that one or more antimist additiveses are coated with or sprayed
On to the surface of sealant antifog property is provided for sealant.Sealant may further include one or more plasticizer.
Epidermis can include polyester, polyamide or polyolefin.In some structures, the admixture of polyamide and polyester can be advantageously
For epidermis.In some cases, epiphragma includes barrier layer.Obstruct membrane, which typically has, is less than 100 cm3/(m2·day·
Atm it is less than) and more frequently 80 cm3/(m2Dayatm OTR)(According to ASTM D-3985 under 23 DEG C and 0% R.H.
Assessed).Barrier layer is generally made up of thermoplastic resin, and the thermoplastic resin is selected from ethylene-vinyl acetate copolymer
(EVOH), amorphous polyamides and vinyl vinylidene chloride and its additive saponification or hydrolysate.Some materials include
EVOH barrier layer, it is clipped between two aramid layers.Epidermis typically comprises polyester, polyamide or polyolefin.
In some packaging applications, epiphragma does not include any barrier layer.Such film generally includes one or more polyenes
Hydrocarbon, as defined herein.
Non- Obstruct membrane typically has from 100 cm3/(m2Dayatm) until 10000 cm3/(m2·day·
Atm), more frequently until 6000 cm3/(m2Dayatm OTR)(According to ASTM D-3985 in 23 DEG C and 0% R.H.
Under assessed).
Peculiar composition based on polyester is those compositions for carrying out tray cover to instant food.For these films
For, polyester resin may be constructed at least 50 weight %, 60 weight %, 70 weight %, 80 weight %, 90 weight % film.These film allusion quotations
Used with reference to the support member based on polyester type.
For example, container can be made up of the cardboard for being coated with polyester, or container can be integrally formed as by polyester resin.It is applicable
It is CPET, APET or APET/CPET container in the example of the container of packing material, is foam-like or non-foam.
Generally, the PET of biaxial tension is due to its high thermal stability under standard chow heating/boiling temperature and as lid
Film.Generally, the polyester film of biaxial tension is heat setting, i.e., non-pyrocondensation.Heat-sealing of the film to container is covered in order to improve PET
Property, the shrink wrap layer of relatively low melted material is generally provided on the membrane.The shrink wrap layer can be made to be coextruded with PET basic units(Such as
Disclosed in EP-A-1,529,797 and WO2007/093495), can by the shrink wrap layer solvent be coated with or it is extrusion coated
On basement membrane(As disclosed in US 2,762,720 and EP-A-1,252,008).
Specifically, in the case of fresh red meat packing material, it is advantageous to using include internal oxygen permeable membrane with
Double capping films of the impermeable capping film of external oxygen.The combination of the two films also significantly prevents obtains meat phase when packaging
Meat discoloration when being upwardly extended for the height of tray wall, this is the situation of most critical in fresh meat barrier package.
These films are for example described in EP1848635 and EP0690012, the side that disclosures of which passes through reference
Formula is incorporated herein.
Epiphragma can be individual layer.The exemplary composition of monofilm includes polyester as herein defined and its admixture,
Or polyolefin as herein defined and its admixture.
In all these film layers described herein, polymers compositions can contain generally to be included in such composition
Appropriate amount additive.Some in these additives be preferably included in outer layer or one of these outer layers in, and
It is some other to be preferably added to internal layer.These additives include slip agent and anti-blocking agent, such as talcum powder, wax, silica
Deng;Antioxidant;Stabilizer;Plasticizer;Filler;Pigment and dyestuff;Cross-linked inhibitor;Crosslinking enhancer;UV absorbents;Gas
Taste absorbent;Oxygen scavenger;Bactericide;Antistatic additive;Antifoggant or composition;And the technical staff in packaging film field is
The similar additive known.
It is advantageously possible to being perforated suitable for the film of capping application to allow packaging food to breathe.It can pass through
Using available different technologies in this area, pass through laser or mechanical component(Such as possesses the roller of some pins)Come to those films
Perforation.The number of holes of the per unit area of film and its size can influence the gas permeability of film.Micropunch film generally by from
2500 cm3/(m2Dayatm) until 1000000 cm3/(m2Dayatm OTR values)(According to ASTM D-3985
Assessed under 23 DEG C and 0% R.H.)To characterize.Micropunch film is generally by higher than 1000000 cm3/(m2·day·
Atm OTR values)(Assessed according to ASTM D-3985 under 23 DEG C and 0% R.H.)To characterize.
Further, it is also possible to allocate and be described herein the firm or peelable of support member is directed to for covering the film of application to provide
From sealing.Measure peelable seals power(Herein referred as " peeling force ")Method be described in ASTM F-88-00.Can
The stripping force value of receiving from 100 g/25 mm to 850 g/25 mm, from 150 g/25 mm to 800 g/25 mm, from 200
In the range of g/25 mm to 700 g/25 mm.
Specifically, required sealing intensity is realized by designing pallet and lid construction.
In general, one or more layers of epiphragma can be printed, to provide the consumer with useful information, that is, are made us
Happy image and/or trade mark or other advertising messages are to improve the retail of packaging product.
Any appropriate method known in the art can be passed through(Such as rotary screen, intaglio printing or flexible platemaking technology)To print
Brush the film.
Definition and convention on material
PVDC is any vinylidene chloride copolymer, wherein major amount of copolymer includes vinylidene chloride and very small amount
Copolymer include the one or more unsaturated monomers copolymerizable with it, typically vinyl chloride and alkyl acrylate or first
Base acrylate(For example, methyl acrylate or methacrylate)And it is according to the admixture of different proportion.In general,
PVDC barrier layers will contain plasticizer known in the art and/or stabilizer.
As used herein, term EVOH includes saponification or hydrolysis ethylene vinyl acetate copolymer and refer to ethene/
Ethenol copolymer, it is preferably from about 28 moles of % to about 48 moles of %, more preferably from about 32 moles of % to about 44 that it, which has,
The ethylene comonomer content of mole % ethene, and it is even furthermore preferable that at least 85%, preferably at least 90% saponification degree.
As used herein, term " polyamide " is intended to refer to homopolyamide and copolyamide or melamine.The art
Language specifically includes fatty polyamide or copolyamide, for example, polyamide 6, polyamide 11, polyamide 12, polyamide 66, poly-
Acid amides 69, polyamide 610, polyamide 612, copolyamide 6/9, copolyamide 6/10, copolyamide 6/12, copolyamide 6/
66th, copolyamide 6/69;Aromatic series and partially aromatic polyamide or copolyamide, such as polyamide 6 I, polyamide 6 I/6T,
Polyamide MXD6, polyamide MXD6/MXDI, and its admixture.
As used herein, term " copolymer " refer to from two or more types monomer polymer and comprising
Ter-polymers.Alathon includes high density polyethylene (HDPE)(HDPE)And low density polyethylene (LDPE)(LDPE).Ethylene copolymer bag
Containing ethylene/alpha-olefin copolymer and ethene/beta-unsaturated esters copolymer.Ethylene/alpha-olefin copolymer generally comprises ethene and is selected from
One or more comonomers of alpha-olefin with 3 to 20 carbon atoms(Such as 1- butylene, 1- amylenes, 1- hexenes, 1- are pungent
Alkene, 4-methyl-1-pentene etc.)Copolymer.
Ethylene/alpha-olefin copolymer typically has from close in the range of about 0.86 g/cm3 to about 0.94 g/cm3
Degree.Term LLDPE(LLDPE)It is generally acknowledged to include the group of ethylene/alpha-olefin copolymer, the ethylene/alpha-
Olefin copolymer falls in about 0.915 g/cm3 to about 0.94 g/cm3 and specifically for about 0.915 g/cm3 to about 0.925 g/cm3
Density range in.Sometimes, it is referred to as from about 0.926 g/cm3 to the linear polyethylene in about 0.94 g/cm3 density ranges
Linear density polyethylene(LMDPE).Low density ethylene/alpha olefin copolymer can be referred to as very low density polyethylene
(VLDPE)And ultra-low density polyethylene(ULDPE).It can be total to by multiphase or homogeneous polymerization method to obtain ethylene/alpha-olefin
Polymers.
Another useful ethylene copolymer is ethene/beta-unsaturated esters copolymer, and it is ethene and one or more insatiable hungers
With the copolymer of ester monomer.Useful beta-unsaturated esters include the vinyl acetate of aliphatic carboxylic acid, and wherein these esters have 4 to 12 carbon
Atom, such as vinylacetate;And the Arrcostab of acrylic or methacrylic acid, wherein these esters have 4 to 12 carbon originals
Son.
Ionomer is the copolymer of ethene and unsaturated monocarboxylic, and the unsaturated monocarboxylic, which has, passes through metal ion
(Such as zinc or preferred status sodium)The carboxylic acid of neutralization.
Useful propylene copolymer includes propylene/ethylene copolymer, and the propylene/ethylene copolymer is propylene and ethene
Copolymer, have most of weight percent contents propylene and propylene/ethylene/butene terpolymer, they be propylene,
The copolymer of ethene and 1- butylene.
As used herein, term " polyolefin " refers to any olefin polymerization, and it can be linear, branch, ring
, it is aliphatic, aromatic, substitution or it is unsubstituted.More specifically, homopolymer of the term polyolefin comprising alkene,
The copolymer of alkene, alkene and can be with the non-aromatic comonomer of combined polymerization(Such as vinyl monomer)Copolymer, it changes
Property polymer etc..Particular instance includes Natene, polypropylene homopolymer, polybutylene homopolymer, ethene-alpha-olefin copolymerization
Thing, propylene-alpha-olefin copolymers, 1-butene-alpha-olefin copolymers, ethene-beta-unsaturated esters copolymer, ethene-unsaturated acids copolymerization
Thing(For example, ethylene-ethyl acrylate copolymer, ethylene-butyl acrylate copolymer, ethylene-methyl acrylate copolymer, second
Alkene-acrylic copolymer and ethylene-methacrylic acid copolymer), ethylene-vinyl acetate copolymer, ionomer resin, poly- first
Base amylene etc..
Term " polyester " is used to refer to equal polyester and copolyesters herein, wherein equal polyester is defined as from a kind of dicarboxylic acids
The polymer and copolyesters that a kind of condensation with glycol obtains are defined as from one or more dicarboxylic acids and one or more two
The polymer that the condensation of alcohol obtains.Suitable polyester resin is such as ethylene glycol and terephthalic acid (TPA)(I.e. poly- (ethylene terephthalate
Ester)(PET))Polyester.Prioritizing selection polyester, these polyester are contained ethylene unit and included at least based on dicarboxylate unit
90 moles of %, more preferably at least 95 moles of % ethylene glycol terephthalate unit.Remaining monomeric unit is selected from other
Dicarboxylic acids or glycol.Other suitable aromatic dicarboxylic acids be preferably M-phthalic acid, phthalic acid, 2,5-, 2,6- or
2,7- naphthalenedicarboxylic acids.In alicyclic dicarboxylic acid, cyclohexane cyclohexanedimethanodibasic should be mentioned that(Especially hexamethylene -1,4- dicarboxylic acids).
In aliphatic dicarboxylic acid, (C3-Ci9) alkanedioic acid be it is specially suitable, specifically, butanedioic acid, decanedioic acid, adipic acid,
Azelaic acid, suberic acid or pimelic acid.Suitable glycol is, for example, aliphatic diol, such as ethylene glycol, diethylene glycol (DEG), triethylene glycol, third
Glycol, 1,3 butylene glycol, 1,4- butanediols, 1,5- pentane diols, 2,2- methyl-1,3-propanediols, neopentyl glycol and 1,6- rings
Hexane diol and alicyclic diol, such as 1,4-CHDM and Isosorbide-5-Nitrae-cyclohexane diol, are optionally with one
Or multiple rings contain heteroatomic glycol.
Conjugated polyester resin from one or more dicarboxylic acids or its there is one or more ethylene glycol particularly aliphatic
The low alkyl group of ethylene glycol or alicyclic ethylene glycol(Up to 14 carbon atoms)Diester is also used as the polyester tree for basement membrane
Fat.Suitable dicarboxylic acids includes aromatic dicarboxylic acid such as terephthalic acid (TPA), M-phthalic acid, phthalic acid or 2,5-, 2,
6- or 2,7- naphthalenedicarboxylic acid, and aliphatic dicarboxylic acid, such as butanedioic acid, decanedioic acid, adipic acid, azelaic acid, suberic acid or heptan
Diacid.Suitable glycol includes aliphatic diol, and such as ethylene glycol, diethylene glycol (DEG), triethylene glycol, propane diols, 1,3-BDO, Isosorbide-5-Nitrae-
Butanediol, 1,5- pentane diols, 2,2- methyl-1,3-propanediols, neopentyl glycol and 1,6- cyclohexane diols and alicyclic two
Alcohol, such as 1,4-CHDM and Isosorbide-5-Nitrae-cyclohexane diol.The example of such copolyesters is (i) azelaic acid and terephthaldehyde
Acid and aliphatic alcohol, it is therefore preferable to the copolyesters of ethylene glycol;(ii) adipic acid and terephthalic acid (TPA) and aliphatic alcohol, preferably
For the copolyesters of ethylene glycol;And (iii) decanedioic acid and terephthalic acid (TPA) and aliphatic alcohol, it is therefore preferable to the copolymerization of ethylene glycol
Ester;(iv) copolyesters of ethylene glycol, terephthalic acid (TPA) and M-phthalic acid.Suitable amorphous copolyester is from one
Kind or a variety of dicarboxylic acids, it is therefore preferable to the aliphatic diol of aromatic dicarboxylic acid and those copolyesters of alicyclic diol.Typical case
Amorphous copolyester include terephthalic acid (TPA) and aliphatic diol and alicyclic diol, especially ethylene glycol and Isosorbide-5-Nitrae-hexamethylene
The copolyesters of dimethanol.
Specifically describe
Equipment 1
Fig. 1-3 shows the variant of the equipment 1 for packing product P.Equipment 1 is suitable for controlled atmospheric packing, wherein in pallet
After portion has produced modified atmospheres, plastic foil is applied to the apical margin of support member or pallet;And/or it is suitable for product P vacuum
Skin packaging, wherein make plastics material film pendency on the product and adhere to closely the inner surface of apical margin and support member with
And product surface, thus leave within a package minimum(If any)Air.If plastic foil be applied to pallet and
Vacuum or modified atmospheres are not produced, then can also use equipment 1.
Equipment 1 includes support frame 2(It is represented schematically in phantom), the support frame is for example in its top section
On be defined in the example and be illustrated as horizontal courses of action.Mesh supplies sub-assembly 3(Preferably by support frame 2
Carrying)Roller 4 including plastic web 5, the plastic web are used subsequently to form pallet inline;In fact, plastics
Mesh 5 is deployed from roller 4 and defines plastics precursor 6, in the plastics precursor, then forms pallet shape element inline
8 cavity 7, as described further below.Film supplies sub-assembly 9(Preferably carried by the support frame 2)Including corresponding
Roller 10, the roller are configured to supply plastic foil 11 so that it is fixed on the top of pallet shape element 8.The plastic foil can be with
Include at least one gas-permeable layer and at least one gas(Especially oxygen)Impermeable barrier.
Forming station 12 is arranged in support frame 2 and is positioned in courses of action.Forming station 12 is configured to work as precursor 6 still
Precursor 6 is received from roller 4 and produce cavity 7 wherein when in the form of plastic web.In fact, forming station 12 includes at least one
Upper part 13a and at least a low portion 13b, they can be moved relative to each other with cause wherein the two parts 13a,
Under the conditions of the opening that 13b is spaced apart, the longitudinal section of mesh shape precursor 6 can be corresponded to forming station and positioned, and
In the closing position that wherein the two parts 13a, 13b is moved relative to each other, one or more moulds are defined in the two parts
Cavity 14 processed, wherein pallet shape element are formed as precursor.In this respect, at least one in upper part 13a and low portion 13b
One or more molding parts are presented in person, and the molding part defines the molding for being shaped as the pallet shape element to be formed
Cavity;Forming station can include molding part(For example, male element and concave member), in forming station is in the close position
When, these molding parts mechanically force the mesh material of precursor to take required shape;Or forming station can be included and is used for
Against the one or more gas injection apparatus and formation pallet shape element of the blowing mould mesh material of molding cavity 14;At another
In alternative solution, forming station, which can include, to be used to mesh material being drawn into the withdrawal of one or more of molding cavity gas
Device.Of course, it is possible to it is used to form mesh material using other molding techniques., can in order to promote the shaping of mesh material
With the upper part and/or low portion of heating precursors at a proper temperature.
Under any circumstance, forming station 12 is configured so that when leaving the forming station, and precursor 6 includes adjacent trays
One or more lengthwise rows 15 of shape element 8(In the example shown in Fig. 1-4, two horizontal lines 15 of pallet shape element 8 by into
Shape station 12 gradually forms), each of the row 15 of pallet shape element is laterally limited by longitudinal tape 16, and transverse belt 17 is vertical
Limited to ground and continuously combine the adjacent trays shape element of same lengthwise rows.
As visible in figures 1-4, transverse belt and longitudinal tape limit the open top 18 of pallet shape element 8 and in multiple intersections
Intersected at region 19:In the example shown, these open tops are substantial rectangulars and by two of pallet shape element
Longitudinal side wall and two lateral sidewalls define;Therefore, these transverse belts are vertically intersected with these longitudinal tape, described so as to limit
Rectangular top opening 18, positioned with causing the intersection region to correspond to the corner regions of pallet shape element.In the example shown,
These open tops are formed as with radiused corners, therefore transverse belt 16 and longitudinal tape 17 are presented at intersection region 19 with expansion
Most substantial straight configuration.
Packages assembly 20(Also along courses of action positioning on the frame 2)It is configured to receive the He of plastic foil 11
The precursor 6.Packages assembly 20 is arranged to tightly hold plastic foil 11 to close the open top of pallet shape element 8
18, and define the bearing 21a of predetermined quantity including an at least lower tool 21, the lower tool(It is four in the example shown
Individual bearing 21a, often row two).Each bearing 21a is designed to receive a respective trays in the pallet shape element 8
Shape element.Upper tool 22(An and part for packages assembly)Face toward and instrument 21 and be arranged to and the bottom
Tool cooperation is with pallet shape element 8 that the plastic foil 11 is positioned in the bearing 21a and hermetically closes phase
Open top 18 is answered, so as to form master control one or more product P one or more closure pallet shape element 8a, the product
Such as it is automatically or manually loaded into the cavity of pallet shape element in the downstream of forming station 12(It note that in figures 1-4,
Sometimes the product P of pallet shape element internal is omitted for the clearness of accompanying drawing).
In downstream, packages assembly operation separation sub-assembly 23, it is described separation sub-assembly along the path orientation and by with
Put for being at least laterally separated closure pallet shape element and forming closure pallet 8b.Separation sub-assembly 23 can include horizontal knife
Piece 24, the horizontal blade position on the frame 2 perpendicular to machine direction MD and are configured to correspond to transverse belt
17 center line 17a and cut transverse belt 17 longitudinally to separate adjacent closure pallet shape element 8a;Separating sub-assembly 23 can be with
Comprising longitudinal blade 25, longitudinal blade is positioned on the frame 2 parallel to machine direction MD and is configured to pair
Several longitudinal tape 16 should be cut to be laterally separated the adjacent lines of pallet shape element in the center line 16a of longitudinal tape 16(Center line 16a
It is visible in Fig. 4 with 17a).
According to an aspect of the present invention, cutting tool 26 can be carried by support frame 2 and be configured to be effective
To supply the area in predefined path included between sub-assembly 3 and packages assembly 20 corresponding to mesh and in precursor 6
Upper formation otch;Tool actuators 126(Such as:Belong to hydraulic, air-driven type or power type)Cutting tool 26 can be acted on:
Tool actuators are controlled by control unit 100 to reduce and raise cutting tool and to form port 27 and 28;According to another
Aspect, cutting tool 26 can be next to the operating upstream of packages assembly 20, so that proper precursor is handled by cutting tool 26
And when being moved on machine direction MD, the cutting tool immediately enters packages assembly.Cutting tool 26 is arranged to
The port 27 positioned corresponding to the side wall of each of the pallet shape element is formed in precursor(Referring to Fig. 5 and Fig. 7)Or
The port 28 positioned corresponding to multiple intersection regions 19 between longitudinal tape and transverse belt(Referring to Fig. 5 and Fig. 6).One
In example, the horizontal ledge 29 that can be formed through in the corner region of each of pallet shape element 8 forms port 27
(Fig. 7);In another example, each of intersection region 19 that can be between the longitudinal tape and transverse belt place
Form port 28;In another example, can in the horizontal ledge 29 in the corner region for being defined in pallet shape element shape
Into port 27, and can be between the longitudinal tape and the transverse belt intersection region 19 at formed port 28(Fig. 5 and figure
6).
Cutting tool 26 may be configured to form port 28 at corner region 19, and these ports are in from plastics precursor
The form of the cut out portion of removal:Specifically, cutting tool 26 can be configured to correspond to two with a line
Center line between longitudinally adjacent pallet shape element and remove the part of the corner region 19 to form each cut out portion;It is real
On border, these cut out portion produce passage for gas is delivered into each adjacent trays shape portion during the application of plastic foil
The inside divided;In addition, shape and the position for the cut out portion for defining port 28 are attributed to, the water of each pallet under formational situation
The continuity of flat base rim will not suffer damage, and therefore need not form big level tray wheel rim.
According to particular aspects, cutting tool 26 is configured and positioned such that each of described cut out portion symmetrically
It is positioned between two adjacent trays shape support members, and forms the triangle hole limited by three straight flanges or arc-shaped side, or by
The tetragonal hole that four straight flanges or arc-shaped side limit.In the example shown in Fig. 1, the cutting tool includes multiple cutting machines
26a, the multiple cutting machine are configured to enter the corner region 19 of the band:Cut edge 26b is presented in each cutting machine,
The cut edge is shaped as the opening 28 that will be formed on precursor:As figure 4, it is seen that some cut edges are real
Triangular shaped and formation triangle hole 28 in matter, and some cut edges are tetragonal shape and form tetragonal hole
Gap.
Turning now to the detailed description to packages assembly 20 and with reference to figure 8-11, it is noted that the packages assembly
Including at least one main actuator 29(It can be pneumatic actuator, electric actuator or hydraulic actuator), the main actuator
On at least one of the upper tool 22 and lower tool 21 be it is effective, with cause the upper tool and it is described under
Portion's instrument shifts between the open position and the closed position, in the open position, upper tool 22 and lower tool 21 every
Opening and being formed allows pallet shape element 8 being positioned in bearing 21a and plastic foil 11 is positioned above pallet shape element
Gap, in the closing position, upper tool and lower tool are abutted and interacted with each other with solid by plastic film seal
It is scheduled on above one or more of packages assembly pallet shape element.In fact, the material of plastic foil and the material of precursor
Material is inserted between the adjacent part 30 of upper tool 22 and the corresponding adjacent part 31 of lower tool 21, such as Fig. 9 and Figure 10 institutes
Show.Adjacent part 30 and 31 at least surrounds the open-topped periphery of pallet shape element 8.Control unit 100 controls main actuator
29 so that upper tool and lower tool move between upper position and lower position.
Upper tool includes being used for a part for plastic foil 11 corresponding to the effective of the instrument that faces toward of upper tool
Surface 32 and hold component 33.Component 33 for fixing can include vacuum source 34, such as vavuum pump, the vacuum source by
Control unit 100 and pipeline 35 control, and the pipeline is connected or connectable to the vacuum source and leads to upper tool 22
Existing several suction holes 36 on active surface 32.Besides or furthermore, holding members 33 can include mechanically retained device(Example
Such as, including it is configured to plastic foil grasping pliers in position).In a further alternative or in addition, hold structure
Part can include the heater that can heat the active surface of upper tool, thus plastic foil 11 is heated up, to increase to same
The viscosity of the active surface 32 of one plastic foil.But according to another alternative solution or in addition, holding members can include it is effective
The adhesion part on surface.In a further alternative or in addition, holding members can include electronic holder, it is described electronic solid
The polarity that holder is configured to change the active surface of upper tool is electric to be produced between the active surface and plastic foil
Power.In one embodiment, control unit 100 is arranged to for example by activating the vacuum source 34 or by causing valve 37
Pipeline is connected to vacuum source 34 to activate the component for fixing, and causes the active surface by the part of plastic foil
Receive and be retained in the appropriate position above the pallet shape element in packages assembly.
Further specifically, it should be noted that flat active surface or cheese can be presented in upper tool 22
Active surface(This second variant is shown in Figure 11).Heater is related to upper tool and is controlled by control unit 100
To cause the active surface of lower tool at least up between 150 DEG C and 260 DEG C, optionally between 180 DEG C -240 DEG C, more
Temperature optionally between 200 DEG C -220 DEG C.As heater, can example as used in the inside of upper tool 22 or correspondingly
In the resistance that active surface 32 positions.
Several bottom wall portions 39 and the number appeared from the respective bottom walls part in the bottom wall portion are presented in lower tool 21
Individual sidewall sections 40 are to define several bearing 21a.If upper tool has cheese active surface, then lower tool
In one or more of sidewall sections can carry an at least protuberance 41, the protuberance be positioned and configured to so that
When pallet shape element 8 is positioned in the corresponding bearing 21a of lower tool, each protuberance 41 is inserted into positioned at the zone of intersection
Projected upwards in corresponding port in one of domain and in the side of the cheese active surface above pallet shape element.Change
Sentence is talked about, the protuberance(It can include pin)In cheese active surface 32 through opening 28 and above the band of precursor
Direction on appear and gas and/or injected a gas into avoiding withdrawing in the cavity from pallet shape element 8 into these cavitys
Any possible step before, plastic foil closure opening 28.Because holding members 33(For example, the active surface to upper tool
Applying vacuum)It may be enough to make the film be maintained spaced apart by with hole 27,28 between vacuum to be applied to lower tool mid-term, so
The presence of protuberance and not required that they be so.
In fact, equipment 1 may further include vacuum arrangement 42, vacuum arrangement be connected to lower tool 21 and by
It is configured to remove gas from the inside of the pallet shape element;Vacuum arrangement 42 has at least one vacuum source 43(Such as:
Pump)With at least one emptying circuit 44 that the port 27,28 is connected to the vacuum source.Control unit 100 can by with
Control vacuum arrangement 42 is set at least to withdraw gas when upper tool and lower tool are in the close position middle.Control unit
100 can also for example by make vavuum pump 33 inactive and/or by will suction hole 36 for example via lead to outside atmosphere and
The auxiliary line 45 of hole 36 can be used to selectively connect to by valve 37 and be connected to atmosphere to make the holding members 33 of plastic foil 11
It is inactive, to allow plastic foil to dangle on pallet and dangle in each pallet on the product P of institute's master control(Figure 10).This
With at least portions of of plastic foil and/or precursor(For example, at band)Appropriate heating cause together using plastic foil come close
Envelope pallet shape element and fit pack product P.In the case of skin packaging, film can include gas(Such as:Oxygen)Can
Permeable formation, the gas-permeable layer adhere to product;With gas impermeable barrier(Such as:Oxygen is impermeable), the gas
Body impermeable barrier is removably adhered to the gas-permeable layer, during so that proper pallet being in use, can remove
Gas impermeable barrier, so as to allow oxygen to be contacted with product, simultaneously because the presence of gas-permeable layer and keep liquid and
Solid limits within a package.
Alternatively or additionally, the equipment can include controlled atmosphere arrangement 46(Shown in Figure 10), the controlled atmosphere cloth
Put the inside for being connected to lower tool 21 and being arranged to gas stream being injected into the pallet shape element.Controlled atmosphere is arranged
Including at least one injection device 47(For example, pump or injection valve)With at least one injection circuit 48, the circuit that injects is by gas
Body source 47 is connected to port 27,28 via injection device 47:Control unit 100 acts on the controlled atmosphere arrangement with least
The gas stream is injected when upper tool and lower tool are in the closing position.In addition, in controlled atmospheric packing(MAP)'s
In the case of, at least portions of appropriate heating of plastic foil or precursor band causes to seal pallet shape element using plastic foil.Tool
For body, in the case where MAP is applied, upper tool can include heating rod, inject a gas into the sky of pallet shape element
After in chamber, the heating rod is reduced and is resisted against on the film part overlapping with the apical margin of pallet shape element, by film heat
Seal the apical margin.Controlled atmosphere arrangement may be configured to inject gas or admixture of gas, these gases or gas mixing
The N that thing includes2、O2And CO2One or more of amount with 20 DEG C and sea level(1 atmospheric pressure)Atmosphere in deposited
These same gas amount it is different.Control unit 100 can be configured to control caused by inside packages assembly
The composition of modified atmospheres.For example, control unit 100 can adjust the composition for the gas stream being injected into packer's bay.Injection
It can be changed into packer's bay with producing the admixture of gas of modified atmospheres depending on product P property.In general, it is modified
Atmosphere mixture includes the N of certain a volume of2、O2And CO2One or more of, the amount with 20 DEG C and sea level
(1 atmospheric pressure)Atmosphere in the presence of these same gas amount it is different.As fruit product P be such as meat, birds, fish,
The product of cheese, bread or pasta, then following admixture of gas can be used(Amount is with the percent by volume at 20 DEG C
Expression, pressure 1atm):
- red meat, remove the peel poultry:O2=70%, CO2=30%
- belt leather poultry, cheese, pasta, bread product:CO2=50%, N2=50%
- fish CO2=70%, N2=30% or CO2=40%, N2=30%, O2%=30
- meat the CO through processing2=30%, N2=70%。
In one embodiment, the equipment includes both vacuum arrangement and controlled atmosphere arrangement.In addition, in such case
Under, control unit 100 may be configured to control the controlled atmosphere arrangement with predetermined from being activated the vacuum arrangement
Reach after delay or in the inside of pallet shape element and started to inject the gas stream after predetermined vacuum level.
According to one aspect, described control unit is configured to control the controlled atmosphere arrangement to withdraw still in the gas
It is afoot to start simultaneously at the injection gas stream.
In another aspect, described control unit is configured to operate vacuum arrangement for removal gas and in pallet shape
The internal pressure that produces of element is between 100 millibars and 300 millibars, optionally between 150 millibars and 250 millibars
Vacuum level.
Into other configuration aspects, lower tool 21 has the one or more bearings for being used for receiving pallet shape element 8
21a:Each bearing 21a is limited by bottom wall portion 39 and the sidewall sections 40 appeared from corresponding bottom wall portion.In such as Fig. 8-11
In shown embodiment, the emptying circuit 44 of vacuum arrangement is recessed towards first be defined in the sidewall sections 40 of each bearing
Groove 50 and towards being defined in the second groove 51 in the bottom wall portion 39 of each bearing;First groove and second groove
It is inside that is being obtained in respective wall part and leading to corresponding bearing 21a:These grooves allow logical in pallet shape element
Mouthfuls 27,28 and lower tool obtained in the groove is connected between the pipeline of the emptying circuit and carries out appropriate gas
Body transmission.In a similar way, the injection circuit 48 of controlled atmosphere arrangement 46(If present)Towards being defined in each
The first groove 50 in the sidewall sections 40 of seat and towards being defined in the second groove 51 in the bottom wall portion 39 of each bearing;
There may be pipeline in lower tool(It can be the same pipeline as used in arranging vacuum)For the groove is connected
It is connected to the injection circuit.Or the injection circuit can correspond to hole 27,28 and be introduced directly into, or it can lead to
Through the nozzle of the hole 27 or 28, to avoid the pressure of pallet shape element-external higher than caused by pallet shape element internal
Pressure.
According to each side of the present invention, drive assembly 60 it is related to framework 2 and as will be described further below drive before
Body 6 and plastic foil 11.Fig. 1-3 schematically shows the possibility alternate embodiment of drive assembly.
Drive assembly 60 includes the first live part 61, and first live part positions on the both sides of courses of action
In the downstream of packages assembly 20.First live part 61 may be configured to grasping and is longitudinally extended in the downstream of packages assembly 20
Precursor longitudinal component two longitudinal direction side borders(This is all visible in Fig. 1 to Fig. 3 E all embodiments).When
In packages assembly downstream, plastic foil and precursor are overlapping and when can have substantial or definite identical width, driving combination
Part and particularly the first live part can also simultaneously engage with the longitudinal direction side border of plastic foil 11.Under any circumstance, plastic foil
11 are at least pulled by precursor based on the fact plastic foil is fixed to precursor at packages assembly;As mentioned, if modeling
Material film has the width substantially the same with precursor, then in packages assembly downstream, the plastic foil part of extension is together with precursor one
Rise and grasped and pulled by the first live part 61.In certain embodiments(Referring to such as Fig. 1, Fig. 2 and Fig. 3 A), corresponding to bag
Fill sub-assembly 20 and preferably also correspond to cutting assemblies 26, make both plastic foil 11 and precursor 6 laterally(That is, transverse to
Machine direction)Break away from the engagement with the first live part or other drive mechanisms.In fact, such as can in Fig. 1, Fig. 2 and Fig. 3 A
See, the longitudinal edge of plastic foil 11 and precursor 6 corresponds to packages assembly 20 and cutting assemblies 26 and kept freely.This solution
Certainly scheme allows plastic foil definitely to be determined size and matched with the open-topped size with pallet shape element 8.In addition, packing
Any drive part of the lateral boundaries of precursor is acted at sub-assembly lacks the longitudinal direction so that by the apical margin for forming final pallet
Minimized with 16 size, effective sealing without damaging plastic foil.
Alternatively(For example, referring to Fig. 3 C and Fig. 3 D), the first live part 61 may be configured to only grasp plastic foil
Two longitudinal direction side borders of 11 longitudinal component.In this case, plastic foil 11 will be presented bigger than the width of precursor wide
Degree(Measured perpendicular to MD):Referring to Fig. 3 D cross section, wherein indicated, plastic foil be more than underlying precursor with allow with
The longitudinal direction side border of the related grasping device engagement plastic foil 11 of first live part 61, the longitudinal direction side border without engaging precursor.
In a variant, referring to Fig. 3 A, the first live part 61 is configured to grasping and indulged in the downstream of packages assembly 20
Two longitudinal boundaries of a part for the plastic foil 11 extended to ground(In this case, the first live part can also grasp
The longitudinal direction side border of precursor).
In the second variant, referring to Fig. 3 B, it is inside packages assembly and right that the first live part 61 is configured to grasping
Two longitudinal direction side borders of a part for the plastic foil 11 being longitudinally extended for the area in the downstream of packages assembly 20.At this
In the case of kind, first live part preferably only grasps plastic foil.
In the 3rd variant(Fig. 3 C and Fig. 3 D), the first live part 61 is configured to grasp to be prolonged from film supply sub-assembly 9
The one of the plastic foil 11 stretched and be longitudinally extended inside packages assembly and for the area in the downstream of packages assembly 20
Two partial longitudinal direction side borders.
In this most two variants(Fig. 3 B and Fig. 3 C), drive assembly and particularly the first live part are preferably not
Precursor 6 is engaged, the precursor is substantially only pulled by plastic foil, and the plastic foil is fixed to precursor at packages assembly.
First live part 61 can be at separation sub-assembly 23 or downstream release plastic foil 11, and then can be from plastics
Film 11 removes two side strips of excess material.It is also noted that the equipment can include preheating table 110(Only show in fig. 3 c
Go out, but also be present in other shown embodiments), the preheating table is effective in supply sub-assembly 10 downstream and positions
In the tight upstream of packages assembly.For example, preheating table 110 may correspond to film 11 supply sub-assembly 9 and packages assembly in film
The vertical zone that extends between 20 and position:Preheating table towards film thin slice and be configured to film reach packages assembly inside it
It is preceding to make the film thin slice heating at moderate temperatures for strengthening film stretching;The aspect grasps with the first live part 61
The longitudinal direction side border of film 11 inside packages assembly 20 allows for vertically protruding the cavity from pallet shape element together
Product packaging(In this case, usually using dome-shaped upper portion instrument).Combined corresponding to packages assembly and cutting
Both parts, make precursor 6 laterally(That is, transverse to machine direction)Break away from and connect with the first live part or other drive mechanisms
Close.
The material that three above variant to form precursor abandons minimum(If it can not cancel).Plastic foil wherein
In the variant also not grasped when in packages assembly, it is allowed to plastic foil definitely determined size with pallet shape element 8
Open-topped size matching.In addition, lacking for any drive part of the lateral boundaries of precursor is acted at packages assembly
The weary size for causing longitudinal tape 16 minimizes, and these longitudinal tape will form the apical margin of final pallet, without damaging having for plastic foil
Effect sealing.In the variant not grasped when wherein plastic foil is in packages assembly, not only plastic film material 11 may be deposited
Abandoned at some, and be possible to laterally control plastic foil during plastic foil is applied into pallet shape element, while have can
The product P that pallet shape element vertically over appears can be packaged in(In this case, using dome-shaped upper portion instrument, such as scheme
Shown in 11).
In another variant, the first live part may be configured to grasp the longitudinal side of the longitudinal component of plastic foil
Boundary and the longitudinal direction side border of precursor.In more detail, according to this another variant, when plastic foil and precursor leave packages assembly
When, the first live part is bonded on each several part for the lateral boundaries that packages assembly downstream is longitudinally extended.Also in this variant,
Drive assembly is configured so that longitudinal side circle of precursor and plastic foil corresponds to packages assembly and preferably also corresponded to
It is free and not by any part engagement of drive assembly in cutting assemblies.
In Fig. 1 and Fig. 2 example, the drive assembly includes the second live part 62, second live part
Be positioned on the both sides of courses of action between forming station 12 and packages assembly 20 and be configured to grasping forming station 12 with
The longitudinal direction side border of a part for the precursor 6 being longitudinally extended between packages assembly 20.In the first variant shown in Fig. 1,
Drive assembly is configured so that longitudinal side circle of precursor is corresponding to forming station 12 and horizontal by second live part 62
Engaged to ground, and in the second variant shown in Fig. 2, drive assembly is configured so that longitudinal side circle of precursor corresponds to
Forming station 12 is laterally free and not engaged by any part of drive assembly.Drive assembly is bonded at forming station
It can help to keep precursor to be in correct position while pallet shape element is formed.On the other hand, lateral boundaries are made to keep freely
Waste material can be reduced and it is still enough for the yielding material of a certain type.
In Fig. 1, the first live part 61 and the second live part 62 are same slender bodies on every side of framework
A part.In fig. 2, first live part and second live part are two corresponding on every side of framework
A part for slender body.Fig. 3 shows that wherein drive assembly does not have the second live part but only has change described above
The embodiment of the first live part in body.
According to constructive viewpoint, and as shown in Figure 13-22, drive assembly 60 is on every side of courses of action comprising extremely
A few elongated driving body 63(For example, drive chain or drive belt).In the case of figure 2, on every side of framework 2
In the presence of two slender bodies 63.Each elongated driving body 63 is installed to support frame 2, has driving branch so as to define(Its
Engage at least one of plastic foil and slender body)With the respective closed path of returning branch;Each drive assembly 60 is also
Comprising multiple grasping devices 66, the multiple grasping device is carried by elongated driving body 63 and is configured to grasp precursor as described above
6 and/or the relative longitudinal direction side border of plastic foil 11;And at least a motor 67, the motor for example connect via gear 68
Controlled to driving body 63 and by control unit 100.Control unit 100 is configured to operate motor 67 so that elongated driving body
63 move along the closed path, wherein driving branch is mobile according to machine direction and returning branch is relative with machine direction and
Movement is with closed-loop path.Slender body 63 is configured so that driving branch continuously includes the first fragment in closed path
64, first fragment extends parallel to courses of action in the downstream of packages assembly 20:In fact, above-mentioned first live part
63 grip elements 66 carried on every side of framework 2 by the first fragment 64 define, and these grip elements are adapted to grab
Hold the lateral boundaries of the precursor being longitudinally oriented in packages assembly downstream and/or plastic foil part.
In the implementation of figure 1, a slender body 63 is configured on every side of framework 2 in closed path, with
So that the driving branch of slender body continuously includes the second fragment 65, second fragment parallel to courses of action and at least from
The downstream of forming station 12 extends to the upstream of cutting tool 26.The grip element 66 carried by second fragment 65 is adapted to
Grasp the longitudinal direction side border for the precursor 6 being longitudinally extended between forming station 12 and packages assembly 26.In Fig. 2 embodiment
In, two slender bodies are configured on every side of framework 2 in respective closed path, to cause the driving branch of slender body
Continuously include first fragment on one of described slender body and on the other of described slender body
Continuously include the second fragment 65, second fragment at least extends to parallel to courses of action from the downstream of forming station 12
The upstream of cutting tool 26.The grip element 66 carried by second fragment 65 is adapted to grasping in forming station 12 and packages groups
The longitudinal direction side border for the precursor 6 being longitudinally extended between component 26.In fact, the second live part 62 of drive assembly 60 exists
The grip element 66 carried on every side of framework by second fragment 65 defines, and these grip elements are adapted to grasp
In the lateral boundaries for the precursor portions that the upstream of cutting assemblies 26 is longitudinally oriented.
As mentioned, in fig. 2, two entirely different slender bodies are used on every side of framework 2.Compared to it
Under, in the example of fig. 1, the driving branch of the single elongated body 63 being present on every side of framework 2 continuously includes the
The downstream of second fragment is connected to the upstream end of the first fragment by three fragments 69, the 3rd fragment;3rd fragment 69 is along right
The track that in packages assembly and optionally should correspond to cutting tool and fully be separated with courses of action extends, whereby by
The grip element 66 of 3rd fragment carrying at least corresponds to packages assembly and optionally(As shown in Figure 1)Corresponding to cutting
Instrument and neither engage the longitudinal direction side border of precursor nor engage the longitudinal direction side border of plastic foil.
In Fig. 1 and Fig. 2 example, the driving branch of slender body 63 can continuously include the 4th fragment or another
Fragment 70, it at least extends to the upstream of forming station 12 parallel to courses of action from supply sub-assembly.By described 4th
The grip element of section carrying is adapted to the longitudinal direction side for the precursor that grasping is longitudinally extended between supply sub-assembly and forming station
Border., can be in entirely different elongated of slender body with the first fragment of carrying or the second fragment in unshowned variant
The 4th fragment is obtained on body.In the case of fig. 1 and fig. 2, the second live part of drive assembly is also included by described the
The grip element of four fragments carrying.Finally, there may be the upstream that the downstream of the 4th fragment 70 is connected to the second fragment 65
The 5th optional fragment 71 at end:The track that the 5th fragment edge corresponds to forming station 12 and fully separated with courses of action
Extension(Referring to Fig. 2), before the grip element 66 that is carried whereby by the 5th fragment 71 at least corresponds to forming station without engagement
The longitudinal direction side border of body.
It is each in gripper element 66 in order that gripper element 66 and precursor 6 and/or the engagement/disengagement of plastic foil 11
Person includes at least two opposed jaws 72,73, and the two jaws for example keep in the close position by flexible member 74.Grasping
Device element 66 is installed to slender body 63 with so that the offset surface 75 for example carried by gear 68 is promoted in opening condition
Jaw, so as to allow to discharge precursor 6 and/or plastic foil 11.It note that the equipment can include gear, these gears are along carefully
The closed path of long body navigates to the track of slender body and therefore navigates to the track of gripper element(For example, to define
3rd fragment 69 and the 5th fragment 71).These gears include offset surface 75, and the offset surface is for example by being co-axially mounted on
Pulley 76 on gear defines.
The control unit 100 of equipment 1
At least one control unit is had according to the equipment of the present invention.
Control unit 100(Schematically show in Fig. 1)It can include that there is one(It is or multiple)The numeral of memory
Processor(CPU), matching test circuit, or the combination of one or more digital processing elements and one or more matching test circuits.
Indicated in description of the invention and following claims, control unit 100 is " configured " or " programming " performs
Some steps:This can essentially be realized by allowing any component of configuration or programming Control unit.For example, including one
In the case of individual or multiple CPU control unit 100, by one or more program storages in appropriate memory:Described one
Individual or multiple programs contain instruction, and it is single on control that these instructions cause control unit 100 to perform when being performed by control unit
The step of first described and/or opinion.Or if control unit 100 belongs to matching test, then the circuit of control unit is set
Count into including being configured to handle electric signal in use to perform the circuit of control unit step disclosed herein.
Described control unit can be arranged to control device 1, to perform discussed below or appended claims
Any one of packing method advocated in book.Specifically, control unit 100 may be configured to control driving combination
Part, forming station, cutting tool and packages assembly are so that the movement of precursor in stepwise fashion and the cavity of pallet shape element exist
Formation in forming station is synchronous, wherein forming port on cutting tool and making pallet shape component seal at packages assembly.
Described control unit can also operate vacuum arrangement and controlled atmosphere arrangement, if present.
For example, it is noted that the operation of the equipment is controlled by control unit 100.Control unit 100 is configured
For performing following circulation:
Order forming station forms the pallet shape element to the precursor from supply sub-assembly in the form of plastic web
In;
Order drive assembly moves the precursor and the plastic foil sequentially to produce wherein shape in stepwise fashion
Into the pallet shape element for having predetermined quantity precursor and plastic foil corresponding part packages assembly part;
Order cutting tool corresponds to predefined path included between mesh supply sub-assembly and packages assembly
Area and act on precursor and form the port;
Command wrapper sub-assembly goes to closing position from open position,
Optionally order vacuum arrangement removes gas and/or order controlled atmosphere arrangement injection gas or admixture of gas,
Plastic foil is closely fixed to the pallet shape element in packages assembly by command wrapper sub-assembly,
Order separation sub-assembly is laterally(And if desired, longitudinally)Separation closure pallet shape element and formation number
Individual closure pallet.
Once complete the circulation, it is possible to obtain the closure pallet of Figure 12 shown types, wherein the turning of plastic foil with
The radiused corners of the apical margin of pallet are overlapping and are projected into outside the radiused corners, thus allow to peel off easily, but make modeling simultaneously
Material film abandons minimum.
Packing method
The packing method according to each side of the present invention will now be described.
Following methods can by the equipment according to any one of embodiments above and variant control unit 100 prison
Superintend and direct lower execution.According to an aspect of the present invention, control and programming Control unit 100 are as described below to be performed using equipment 1
Method, as described in one of embodiments above or as any one of appended claims are advocated.
According to the packaging product of each side of the present invention(P)Method comprise the steps of.
Supply is in the plastics precursor 6 of plastic web form from roller 4.Before being driven on machine direction MD along courses of action
Body 6 and the precursor is received at forming station 12, wherein forming several cavitys in precursor with so that the precursor includes:
One or more lengthwise rows of adjacent trays shape element 8,
The longitudinal tape 16 of each of the row of pallet shape element is laterally limited,
Longitudinally limit and continuously combine the transverse belt 17 of the adjacent trays shape element of same lengthwise rows, these transverse directions
Band and these longitudinal tape limit the open top of pallet shape element and intersected at multiple intersection regions.
In forming station downstream, by the product(P)One or more of be manually or automatically loaded into the pallet
In the respective cavities of shape element.
, can be by being produced as above in the cutting tool 26 of the operating upstream of packages assembly 20 after pallet shape element is formed
Described port 27 and/or 28.When describing cutting tool 26, can position as described and forming openings 27
And/or 28.When mobile precursor, plastic foil is also supplied to cause the plastic foil and the precursor to be received within packages assembly
At 20, wherein plastic foil is fixed to pallet shape element 8 to close the open top of the pallet shape element of precursor.Now, may be used
For example to activate vacuum arrangement by as disclosed above to produce vacuum in the cavity of pallet shape element.It is or or another
Outside, controlled atmosphere arrangement can be activated to produce controlled atmosphere by as disclosed above in the cavity of pallet shape element.
Due to tight closure and due to the opening 27 and/or 28 being present in pallet shape element, can be effectively injected as needed
And/or withdraw gas.
Then, closure pallet shape element goes to separation sub-assembly, in the separation sub-assembly, is laterally separated these supports
Disc-shaped element, it is consequently formed the closure pallet or tray set of separation.
The driving of precursor and/or plastic foil can be carried out in a different manner.
According to the first variant of the present invention, by one of precursor that has closely received plastic foil corresponding to wherein precursor
The longitudinal direction side border divided and grasp precursor to drive precursor along courses of action, while longitudinal side circle of precursor is corresponded to wherein
Carry out fixation of the plastic foil to pallet shape element(I.e. at packages assembly)Precursor a part and keep freely.According to institute
The first variant is stated, only precursor is grasped in its lateral boundaries, and plastic foil is fixed based on plastic foil in packages assembly downstream
Pulled to the fact that precursor by precursor.If precursor and plastic foil have identical width, then both precursor and plastic foil
Packages assembly downstream is grasped in its lateral boundaries simultaneously.
According to the second variant of the present invention, only plastic foil is tight by least corresponding to wherein precursor and plastic foil
A part for the plastics thickly coupled and the longitudinal direction side border that grasps plastic foil are directly driven.Make the longitudinal direction side border of precursor
Corresponding to wherein progress plastic foil to the fixation of pallet shape element(I.e. at packages assembly)Precursor a part and keep
Freely.Precursor lateral boundaries are not grasped in packages assembly downstream yet, and precursor is based on plastic foil in packages assembly downstream
The fact that fixed to precursor and substantially only pulled by plastic foil.It note that in another variant, can also be by packing
At sub-assembly or even in packages assembly upstream(For example, prolong corresponding to being supplied in film between sub-assembly 9 and packages assembly 20
The area for the film 11 stretched)Exclusively plastic foil is grasped without grasping precursor to drive plastic foil.This allows the width for controlling plastic foil
Spend and therefore provide to extensive multiple product(The product vertically over protruded included in the profile of pallet shape element)Pasted
The possibility of body packaging.
, can be by closely receiving plastic foil corresponding to wherein precursor according to the 3rd variant(That is, in packages assembly
Downstream)Precursor and plastic foil a part and grasp the longitudinal direction side border of both plastic foil and precursor to be driven along courses of action
Precursor.Correspond to longitudinal side circle of precursor and wherein carry out fixation of the plastic foil to pallet shape element(I.e. in packages assembly
Place)Precursor a part and keep breaking away from grasping.
According to can with above for combined for any one of three variants disclosed in driving the method for precursor
Four variants, drive a part for formation of the precursor including not yet receiving port corresponding to wherein precursor and grasp the longitudinal direction side of precursor
Border, while longitudinal side circle of precursor is corresponded to the formation for wherein carrying out port(That is, at cutting tool 26)Precursor
A part and keep freely.
According to can with above for combined for any one of four variants disclosed in driving the method for precursor
Five variants, driving precursor include corresponding to wherein precursor and still grabbed before cavity is formed in a part for plastic web form
The longitudinal direction side border of precursor is held, while longitudinal side circle of precursor is corresponded to the formation for wherein carrying out cavity(That is, in forming station
At 12)Precursor a part and keep freely.
Although this hair is described on being presently considered to be most realistic and the most preferred embodiment embodiment
It is bright, it is to be understood that, the present invention is not limited to disclosed embodiment, and on the contrary, this invention is intended to cover to be included in enclose
Various modifications and equivalent arrangements in the spirit and scope of claims.
For example, the special properties of described actuator are illustration and can use the actuator of alternative type, as long as
It is just identical in the type of sports of the movable part of top-operation to put on the actuator.
Although it is also noted that the embodiment shows unitary package sub-assembly, multiple packagings can be concurrently used
Sub-assembly, to optimize productivity.
In addition, such as Fig. 3 E are schematically shown, equipment 1 can be in packages assembly 20(It is referred to as first in this case
Packages assembly)Apply the second plastic foil 11 ' in the place of the second packages assembly 20 ' of downstream process.For example, the first film can be applied
11 above the product P that contains in pallet shape element internal to form epidermis.Then, these pallet shape elements are gone to top work
Second packages assembly 21 ' of tool 22 ' and lower tool 21 '.Second film supply the second film 11 of offer of sub-assembly 9 ', described second
Film can be applied on the top of pallet shape element to produce:
- between the second film 11 ' and the first film 11 have standard atmospheric pressure lid;
- there is the lid for being modified atmospheric pressure between the second film 11 ' and the first film 11;
- another epidermis formed by the second film 11 ' and the first film 11.
It note that the second film supply sub-assembly and the second packages assembly can have film supply sub-assembly 9 respectively(First
Film supplies sub-assembly)With packages assembly 20(First packages assembly)Identical structure and work, and therefore no longer retouched
State.
It is also noted that the second cutting tool(It is for example, identical with cutting tool 26)It may reside in pallet shape element
It is above and on pallet shape element effective, these pallet shape elements have received film 11, but they not yet receive the second plastic foil
11 ' with may be by application plastic foil 11 and the similar other hole of hole 27 or 28 that closes.Second cutting tool will
In the downstream process of packages assembly 20, but in the operating upstream of the second packages assembly 20 ', the second packaged combination is preferably next to
The operating upstream of part 20 '.
Claims (36)
- A kind of 1. product being used in packaging pallet(P)Equipment, the equipment includes:- support frame, the support frame define courses of action;- mesh supplies sub-assembly, and mesh supply sub-assembly is related to the support frame and is configured to supply and is in The plastics precursor of plastic web form;- drive assembly, the drive assembly are carried by the support frame and are arranged to make at least described precursor to exist Machine direction(MD)On moved along the courses of action;- forming station, it is in the plastic web form that the forming station, which is positioned in the courses of action and is configured to receive, The precursor and form several cavitys wherein, to include in the forming station downstream, the precursor:One or more lengthwise rows of adjacent trays shape element,The longitudinal tape of every a line of pallet shape element is laterally limited,Longitudinally limit and continuously combine the transverse belt of the adjacent trays shape element of same lengthwise rows, the transverse belt and institute Longitudinal tape is stated to further define the open top of the pallet shape element and intersect at multiple intersection regions;And- film supplies sub-assembly, and the film supply sub-assembly is configured to supply plastic foil,- packages assembly, the packages assembly also positioned along the courses of action and be configured to receive the plastic foil and The precursor, wherein the packages assembly is also arranged to tightly hold the plastic foil to close the pallet shape member The open top of part, and comprising:Lower tool, the lower tool include the bearing of predetermined quantity, and the bearing is each designed to described in receiving At least one of pallet shape element, andUpper tool, the upper tool is towards the lower tool and is arranged to cooperate with the lower tool, with At least one pallet shape element plastic foil being positioned in the bearing, and hermetically close the respective top Portion's opening, so as to form one or more closure pallet shape elements;- separation sub-assembly, the path orientation of the separation sub-assembly along the packages assembly downstream, and be configured to use In being at least laterally separated the closure pallet shape element and form closure pallet;- cutting tool, the cutting tool, which corresponds between mesh supply sub-assembly and the packages assembly, to be wrapped The area in the predefined path included and act on the precursor, the cutting tool is arranged to be formed corresponding to following At least one of and position port:The side wall of each of the pallet shape element, andMultiple intersection regions between the longitudinal tape and the transverse belt;And- control unit, described control unit are configured and connected to operate at least described drive assembly, the forming station, institute State packages assembly and the cutting tool.
- 2. equipment according to claim 1, wherein the forming station is arranged to form two with pallet shape element The plastics precursor of individual or more parallel row, wherein:Each of-described pallet shape element has two longitudinal side walls and two lateral sidewalls by the pallet shape element The substantial rectangular open top defined, and- the transverse belt is vertically intersected with the longitudinal tape, so as to limit the rectangular top opening, to cause the intersection Region corresponds to the corner regions of the pallet shape element and positioned.
- 3. equipment according to claim 1 or 2, wherein the cutting tool is positioned for acting on the plastics precursor Upper and be arranged to form the port at multiple intersection regions, wherein described cutting tool is configured to pair in addition It is formed in the port of the cut out portion form removed from the plastics precursor, wherein the cutting tool is configured to use In removing a part for transverse belt by the center line between two longitudinally adjacent pallet shape elements corresponding to same a line come shape Into each cut out portion.
- 4. equipment according to claim 3, wherein the cutting tool be positioned at the positive upstream of the packages assembly and It is configured so that:Each of-described cut out portion is symmetrically positioned between two adjacent trays shape support members, andEach of-described cut out portion in one of the following shape:The triangle hole limited by three straight flanges or arc-shaped side, andThe tetragonal hole limited by four straight flanges or arc-shaped side.
- 5. equipment according to claim 1 or 2, wherein the packages assembly includes at least one main actuator, it is described At least one main actuator is operated by described control unit and at least one of the upper tool and the lower tool On be effective, described control unit is configured to operate the main actuator, to cause the upper tool and the bottom Instrument shifts between the open position and the closed position, in the open position, the upper tool and the lower tool Separating and being formed allows the pallet shape element being positioned in the bearing and the plastic foil is positioned at into the pallet Gap above shape element, in the closing position, the upper tool and the lower tool are abutted and made each other With so that the plastic film seal to be held within to one or more of pallet shape elements in the packages assembly Top.
- 6. equipment according to claim 1 or 2, wherein the upper tool includes being used for corresponding to the upper tool The component for the part for holding the plastic foil towards the active surface of the lower tool,And the wherein upper tool is presented flat active surface or cheese active surface, the surface is towards the bottom Instrument and be arranged to receive need be fixed to the lower tool in institute's master control the pallet shape element on the modeling Expect a part for film, and wherein heater is related to the upper tool and is controlled by described control unit, the control is single Member is arranged to control the heater, is included in 150 DEG C to cause the active surface of the upper tool to reach With the temperature between 260 DEG C.
- 7. equipment according to claim 6, wherein the lower tool is presented several bottom wall portions and from the bottom wall part Several sidewall sections that respective bottom walls part in point appears, to define several bearings, and in wherein described sidewall sections One of a carrying at least protuberance, described in the protuberance is positioned and configured to cause to be positioned at when the pallet shape element When in the corresponding bearing of lower tool, each protuberance be inserted into be positioned at it is corresponding in one of described intersection region Projected upwards in port and in the side of the cheese active surface above the pallet shape element.
- 8. equipment according to claim 5, the equipment further comprises at least one of the following:- vacuum arranges that the vacuum arrangement is connected to the lower tool and is arranged to out of described pallet shape element Portion removes gas, and the vacuum arrangement includes at least one vacuum source and the port is connected at least the one of the vacuum source Individual emptying circuit, described control unit are further configured to control the vacuum arrangement down to few in the upper tool and institute State when lower tool is in the closing position and withdraw gas;And- controlled atmosphere arranges that the controlled atmosphere arrangement is connected to the lower tool and is arranged to inject gas stream Into the inside of the pallet shape element, the controlled atmosphere arrangement includes at least one injection device and connected with by the port To at least one injection circuit of the injection device, described control unit is further configured to control the controlled atmosphere cloth Put at least to inject the gas stream when the upper tool and the lower tool are in the closing position;Wherein described controlled atmosphere arrangement is configured to inject gas, the N that the gas includes2、O2And CO2One of or it is more The percent by volume of person and the volume basis in these same gas in the presence of 20 DEG C and the ambient air on sea level Than difference.
- 9. equipment according to claim 8, wherein each of described bearing is by bottom wall portion and from the corresponding bottom The sidewall sections that wall part appears limit, and wherein described at least one emptying circuit and/or at least one injection circuit lead to:- be defined in the sidewall sections of each bearing and lead to the first groove of the inside of the bearing, and/or- be defined in the bottom wall portion of each bearing and lead to the second groove of the inside of the bearing.
- 10. equipment according to claim 1 or 2, wherein the drive assembly includes the first live part, described first Live part is positioned at the packages assembly downstream on the both sides of the courses of action and is configured to grasp the precursor With the longitudinal direction side border of the longitudinal component of at least one of the plastic foil, the longitudinal component grasped is in the packaged combination Part downstream is longitudinally extended, wherein the drive assembly is configured so that the longitudinal direction of the precursor and the plastic foil Lateral boundaries, which correspond to the packages assembly, to be free and is not engaged by any part of the drive assembly.
- 11. equipment according to claim 10, wherein- the drive assembly includes the first live part, and first live part is fixed on the both sides of the courses of action Position is in the packages assembly downstream and is configured to grasp the longitudinal direction side border of the only longitudinal component of the precursor, described vertical Be longitudinally extended to part in the packages assembly downstream, wherein the drive assembly be configured so that the precursor and It is free and not by the drive assembly that longitudinal side circle of the plastic foil, which corresponds to the packages assembly, Any part engages;Or- the drive assembly includes the first live part, and first live part is fixed on the both sides of the courses of action Position is configured to grasp the longitudinal direction side border of the only longitudinal component of the plastic foil, institute in the packages assembly downstream Longitudinal component is stated to be longitudinally extended in the packages assembly downstream, wherein the drive assembly be configured so that it is described before Longitudinal side circle of body and the plastic foil, which corresponds to the packages assembly, to be free and is not combined by the driving Any part engagement of part;Or- the drive assembly includes the first live part, and first live part is fixed on the both sides of the courses of action Position is in the packages assembly downstream and is configured to grasp the plastics being longitudinally extended in the packages assembly downstream The longitudinal direction side border of the longitudinal component of film and the precursor, wherein the drive assembly is configured so that the precursor and institute State plastic foil longitudinal side circle correspond to the packages assembly be free and not by the drive assembly appoint What part engages;Or- the drive assembly includes the first live part, and first live part is positioned at the both sides of the courses of action Above and it is configured to grasp:The longitudinal direction side border of the longitudinal component for the only described plastic foil being longitudinally extended in the packages assembly downstream, andLongitudinally correspond to the longitudinal direction side border of the longitudinal component of the plastic foil of the packages assembly,Wherein described drive assembly is configured so that longitudinal side circle of the precursor corresponds to the packaged combination Part is free and not engaged by any part of the drive assembly.
- 12. equipment according to claim 11, wherein first live part is configured to grasp the institute of the precursor The longitudinal direction side border of longitudinal component is stated, and wherein:- the drive assembly includes the second live part, and second live part is fixed on the both sides of the courses of action Position is configured to grasping in the forming station and the packages assembly between the forming station and the packages assembly Between the longitudinal direction side border of the part of the precursor that is longitudinally extended, wherein the drive assembly is configured so that institute State precursor longitudinal side circle correspond to the forming station be free and not by any part of the drive assembly Engagement;Or- the drive assembly includes the second live part, and second live part is fixed on the both sides of the courses of action Position is supplied between sub-assembly and the packages assembly in the mesh, and is configured to grasping described in be included Forming station, and the longitudinal direction side border of the part of the precursor that the packages assembly is longitudinally extended.
- 13. equipment according to claim 12, wherein the drive assembly is wrapped on every side of the courses of action At least one elongated driving body is included, wherein each elongated driving body is installed to the support frame, is driven so as to define to have Dynamic branch and the closed path of returning branch;- multiple grip elements, the multiple grip element by the elongated driving body carrying and being configured to grasp it is described before The relative longitudinal direction side border of body and/or the plastic foil;And- at least motor, the motor are connected to the driving body and controlled by described control unit, described control unit It is configured to operate the motor so that the elongated driving body moves along the closed path, wherein the driving branched root Mobile according to the machine direction and described returning branch and the machine direction relative to and move;Wherein described elongated driving body is configured so that the drive of the elongated driving body in the closed path Dynamic branch continuously includes the first fragment, and first segment root descends one of configuration and extended according to this:- in the packages assembly downstream parallel to the courses of action;- at the packages assembly and in the packages assembly downstream parallel to the courses of action;- supplied in the film between sub-assembly and the packages assembly transverse to the courses of action, and in the packages groups Parallel to the courses of action at component and in the packages assembly downstream;The grip element wherein carried by first fragment is adapted to grasping and is longitudinally located in the packages assembly The longitudinal direction side border of the precursor in downstream, and/or it is adapted to grasp the longitudinal direction side border of the plastic foil;AndFirst live part of wherein described drive assembly includes the grip element carried by first fragment.
- 14. equipment according to claim 13, wherein the elongated driving body is configured in the closed path So that the driving branch of the elongated driving body continuously includes the second fragment, second fragment is parallel to the behaviour Make path and at least extend to the cutting tool upstream from the forming station downstream, wherein being carried by second fragment The grip element be adapted to grasping be longitudinally extended between the forming station and the packages assembly it is described before The longitudinal direction side border of body;Second live part of wherein described drive assembly includes being carried by second fragment The grip element;AndThe driving branch of wherein described elongated driving body continuously includes the 3rd fragment, and the 3rd fragment is by described second The downstream of section is connected to the upstream end of first fragment, the 3rd fragment along correspond to the packages assembly and with institute The track extension that courses of action fully separate is stated, the grip element carried whereby by the 3rd fragment at least corresponds to The packages assembly and neither engage the longitudinal direction side border of the precursor nor engage the longitudinal direction of the plastic foil Lateral boundaries.
- 15. equipment according to claim 14, wherein the driving branch of the elongated driving body includes:- the four fragment, the 4th fragment at least supply sub-assembly always parallel to the courses of action from the mesh Forming station upstream is extended to, wherein the grip element carried by the 4th fragment is adapted to grasping in the mesh The longitudinal direction side border for the precursor being longitudinally extended between supply sub-assembly and the forming station;Second live part of wherein described drive assembly includes the grip element carried by the 4th fragment.
- 16. equipment according to claim 5, wherein described control unit are arranged to perform following circulation:The forming station is ordered to form the pallet shape element to coming from the mesh supply group in the form of plastic web In the precursor of component;Order the drive assembly to move the precursor in stepwise fashion and be formed with predetermined quantity sequentially to produce Pallet shape element the precursor the packages assembly part;The cutting tool is ordered to correspond to institute included between mesh supply sub-assembly and the packages assembly State the area in predefined path and act on the precursor, and form the port;The packages assembly is ordered to go to the closing position from the open position,The pallet shape member for ordering the packages assembly to be closely fixed to the plastic foil in the packages assembly Part,Order the separation sub-assembly to be laterally separated the closure pallet shape element and form several closure pallets.
- 17. equipment according to claim 6, wherein the component for holding is included by described control unit control Vacuum source, described control unit are arranged to activation for the component of fixing and cause the active surface to receive and consolidate Hold the part of the plastic foil.
- 18. equipment according to claim 6, wherein the active surface of the upper tool reach be included in 180 DEG C- Temperature between 240 DEG C.
- 19. equipment according to claim 18, wherein the active surface of the upper tool, which reaches, is included in 200 Temperature between DEG C -220 DEG C.
- 20. equipment according to claim 11, wherein longitudinal side circle of the precursor corresponds to the cutter Tool is free and not engaged by any part of the drive assembly.
- 21. equipment according to claim 11, supplied wherein first live part is configured to grasping in the film The longitudinal direction side border of the longitudinal component of the plastic foil extended between sub-assembly and the packages assembly.
- 22. equipment according to claim 14, wherein the 3rd fragment along correspond to the cutting tool and with it is described The track extension that courses of action fully separate, the grip element carried whereby by the 3rd fragment at least correspond to institute State cutting tool and neither engage the longitudinal direction side border of the precursor nor engage the longitudinal side of the plastic foil Boundary.
- 23. equipment according to claim 15, wherein the driving branch of the elongated driving body continuously includes:- the 4th fragment;AndThe downstream of 4th fragment is connected to the upstream end of second fragment by the-the five fragment, the 5th fragment, 5th fragment extends along the track for corresponding to the forming station and fully being separated with the courses of action, whereby by described The grip element of 5th fragment carrying at least corresponds to the longitudinal side of the forming station without engaging the precursor Boundary.
- 24. equipment according to claim 8, wherein described control unit are arranged to perform following circulation:The forming station is ordered to form the pallet shape element to coming from the mesh supply group in the form of plastic web In the precursor of component;Order the drive assembly to move the precursor in stepwise fashion and be formed with predetermined quantity sequentially to produce Pallet shape element the precursor the packages assembly part;The cutting tool is ordered to correspond to institute included between mesh supply sub-assembly and the packages assembly State the area in predefined path and act on the precursor, and form the port;The packages assembly is ordered to go to the closing position from the open position;The pallet shape member for ordering the packages assembly to be closely fixed to the plastic foil in the packages assembly Part;Order the separation sub-assembly to be laterally separated the closure pallet shape element and form several closure pallets;AndWherein after ordering the packages assembly to go to the circulation of the closing position from the open position, and ordering The plastic foil is closely fixed to the circulation of the pallet shape element in the packages assembly by the packages assembly Before, described control unit is arranged to perform following circulation:The vacuum arrangement is ordered to remove gas, and/or the order controlled atmosphere arrangement injection gas.
- 25. one kind packaging product(P)Method, methods described uses equipment according to claim 1, and including following Step:- supply is in the plastics precursor of plastic web form;- drive at least described precursor in the direction of the machine along courses of action;- receiving is in the precursor of the plastic web form, and forms several cavitys wherein to cause the precursor bag Include:One or more lengthwise rows of adjacent trays shape element,The longitudinal tape of each of the row of pallet shape element is laterally limited,Longitudinally limit and continuously combine the transverse belt of the adjacent trays shape element of same lengthwise rows, the transverse belt and institute Longitudinal tape is stated to limit the open top of the pallet shape element and intersect at multiple intersection regions;- by the product(P)One or more of be loaded into the respective cavities of the pallet shape element;- supply plastic foil;- plastic foil is tightly held to close the open top of the pallet shape element of the precursor;- the closure pallet shape element is laterally separated, it is consequently formed the closure pallet or tray set of separation;- before the plastic foil is closely fixed into the pallet shape element, formed and corresponded in the following at least One and the port positioned:The side wall of each of the pallet shape element, andMultiple intersection regions between the longitudinal tape and the transverse belt.
- 26. according to the method for claim 25, methods described includes being formed two or more with pallet shape element The plastics precursor of parallel row, wherein:Each of-described pallet shape element has two longitudinal side walls and two lateral sidewalls by the pallet shape element The substantial rectangular open top defined, and- the transverse belt is vertically intersected with the longitudinal tape, so as to limit the rectangular top opening, to cause the intersection Region corresponds to the corner regions of the pallet shape element and positioned;AndWherein formation port, which is included at multiple intersection regions, forms the port.
- 27. the method according to claim 25 or 26, wherein the port is shaped as in the form of cut out portion, it is described Cut out portion is to remove the one of transverse belt by the center line between two longitudinally adjacent pallet shape elements corresponding to same a line What is removed from the plastics precursor come in part, andEach of-described cut out portion is symmetrically positioned between two adjacent trays shape support members, andEach of-described cut out portion in one of the following shape:Limited by three straight flanges or arc-shaped side Triangle hole, and the tetragonal hole limited by four straight flanges or arc-shaped side.
- 28. the method according to claim 25 or 26, methods described include:- correspond to corresponding pallet shape element and hold a part for the plastic foil above it,- be heated to include the temperature between 150 DEG C and 260 DEG C by the part of plastic foil,- from the inside of pallet shape element removal gas, and/or- inject a gas into the inside of the pallet shape element, it is controlled to be formed in the pallet shape element internal Atmosphere,The N that wherein described gas includes2、O2And CO2One or more of percent by volume with 20 DEG C and sea level Ambient air in the presence of these same gas percent by volume it is different,- plastic foil is closely fixed to respective trays shape element.
- 29. the method according to claim 25 or 26, wherein driving the precursor to include:- regularly received a part for the plastic foil corresponding to wherein described precursor and grasped the longitudinal direction side of the precursor Border, while correspond to longitudinal side circle of the precursor and wherein carry out the plastic foil to the pallet shape element A part for the fixed precursor and keep freely;Or- correspond to wherein described precursor and regularly received a part for the plastic foil and grasped the only plastic foil Longitudinal direction side border, while correspond to longitudinal side circle of the precursor and wherein carry out the plastic foil to the pallet shape A part for the precursor of the fixation of element and keep freely, wherein the plastic foil perpendicular to the machine direction And the width measured is more than the width of the precursor;Or- correspond to the following and grasp the longitudinal direction side border of the plastic foil:Wherein described precursor has regularly received a part for the plastic foil being longitudinally extended of the plastic foil, andA part for the plastic foil being longitudinally extended at the packages assembly,Simultaneously correspond to longitudinal side circle of the precursor and wherein carry out the plastic foil to the pallet shape element A part for the precursor of the fixation and keep freely, wherein the plastic foil measures perpendicular to the machine direction Width be more than the precursor width;Or- regularly received a part for the plastic foil corresponding to wherein described precursor and grasped the precursor and the plastics The longitudinal direction side border of film, while correspond to longitudinal side circle of the precursor and wherein carry out the plastic foil to the support A part for the precursor of the fixation of disc-shaped element and keep freely.
- 30. the method according to claim 25 or 26, wherein driving the precursor to include corresponding to wherein described precursor still A part for the formation of the port is not received and grasps the longitudinal direction side border of the precursor, while makes the institute of the precursor Longitudinal side circle is stated to keep corresponding to a part for the precursor for the formation for wherein carrying out the port freely;With/ OrIt is still in plastic web shape wherein to drive the precursor to include corresponding to wherein described precursor before the cavity is formed A part for formula and grasp the longitudinal direction side border of the precursor, while make the precursor longitudinal side circle correspond to wherein Carry out a part for the precursor of the formation of the cavity and keep freely.
- 31. the method according to claim 25 or 26, wherein forming several cavitys in the precursor and defining institute After stating adjacent trays shape element, by being arranged to the plastic foil being closely fixed to the bag of the pallet shape element The cutting tool of dress station operating upstream produces the port in the side wall of each of the pallet shape element.
- 32. the method according to claim 25 or 26, wherein forming several cavitys in the precursor and defining institute After stating adjacent trays shape element, by being arranged to the plastic foil being closely fixed to the bag of the pallet shape element The cutting tool of dress station operating upstream produces institute in multiple intersection regions between the longitudinal tape and the transverse belt State port.
- 33. according to the method for claim 28, wherein the part of plastic foil is heated to include at 180 DEG C -240 DEG C Between temperature.
- 34. according to the method for claim 33, wherein the part of plastic foil is heated to include at 200 DEG C -220 DEG C Between temperature.
- 35. according to the method for claim 29, wherein carried out wherein corresponding to longitudinal side circle of the precursor A part for the precursor of the shaping of the port and keep freely.
- 36. according to the method for claim 29, wherein corresponding in film supply sub-assembly and being fixed to the precursor The plastic foil between the part of the plastic foil that is longitudinally extended and grasp the longitudinal direction side border of the plastic foil.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP13166773 | 2013-05-07 | ||
EP13166773.5 | 2013-05-07 | ||
PCT/EP2014/059196 WO2014180823A1 (en) | 2013-05-07 | 2014-05-06 | Apparatus and process for packaging a product. |
Publications (2)
Publication Number | Publication Date |
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CN105209341A CN105209341A (en) | 2015-12-30 |
CN105209341B true CN105209341B (en) | 2018-02-09 |
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WO2009141214A1 (en) * | 2008-05-20 | 2009-11-26 | Cryovac, Inc. | Method for vacuum skin packaging a product arranged in a tray |
EP2281749A1 (en) * | 2009-07-30 | 2011-02-09 | Ulma Packaging Technological Center, S.Coop. | Thermal sealing packaging system and method thereof |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2009141214A1 (en) * | 2008-05-20 | 2009-11-26 | Cryovac, Inc. | Method for vacuum skin packaging a product arranged in a tray |
EP2281749A1 (en) * | 2009-07-30 | 2011-02-09 | Ulma Packaging Technological Center, S.Coop. | Thermal sealing packaging system and method thereof |
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