DE1561968A1 - Packaging process - Google Patents

Description

156196 «

Helmut gost7

ftjnkft, "SI ¹ *, Μ ·" overter 1967

27- ^ 61707,. ÖeSo / Ra.

Andereon Bros. Mfg. Co., Illinois / USA, " Packaging process

The present invention has a novel and useful view of it Process for vacuum packing.

Ea is desirable that the packaging _t, appears filled matter what material has been packed. Furthermore, air trapped in the package can cause some foods to discolor or degrade, and it is desirable that the air be removed or at least reduced. Both of the features previously identified as desirable can be achieved by filling the container to the top, but it is then possible that the material will interfere with the sealing of a lid on the container as it may extend into the area of the closure.

Ee is an object of the present invention, a method to provide vacuum packaging to perform the tasks described above to facilitate and provide a resulting packaging, the extent of which approximately corresponds to the extent of the material contained therein is equivalent to.

It is a further object of the present invention to provide a method for vacuum packaging in which the bottom is near is moved inward after closing in order to reduce the circumference of the package.

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Let still another object of the present invention A method to provide vacuum packaging by removing the container Initially, a weakened area is formed along which the container will buckle after the vacuum removed iat.

Further features, advantages and application possibilities of the present Invention emerge from the following description in conjunction with the accompanying drawings.

Ee see:

Pig. ' 1 is a diagrammatic view of an apparatus for Carrying out the method of the present invention,

> '■■ Fig. 2 is a perspective view of an intended packaging,

VIg. 3 and 4 partial longitudinal sections, which the process « illustrate steps, and

Fig. 5-7 Partial transverse sole center line through a conventional one evacuable chamber, the successive steps of the method being suitable.

The method according to the present invention passes calibrated on the vacuum packaging of products in a container. Although other shapes are apparent, a typical container C illustrated in fig. The container has proven advantageous Cup-shaped and has a base generally numbered 12 Bottom wall and a generally frustoconical side wall 14 · The walls 12 and 14 are attached to a kit 15 well specified joint connected to each other · The side wall inclines evenly upwards from the bottom wall 12 and a near outside protruding flat "oh 16" extends

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1561961

itch outside the circumference of the rare wall at its upper end i the middle part of the bottom wall 12 is urgently arranged further on the upper end of the container for a high purpose as seen below The container can be made of a material web described below "and the flange can be formed by directing the path" to the desired otrule and shape "! The container C is arranged so that its bottom wall 12 is moved to the open end of the container after filling and closing can, in order to thereby reduce the circumference of the container to the ■ ^M ? oU * <-> 2ttstand BU. A weakened area is provided in the wall for this wook, and the container can be formed from this weakened porthole. In the case of the vranaoliaulicht on embodiment, the weakened Btreloh has advantageously formed the front of a V-shaped groove 17 "ugrensead at the junction 15" wide balls 18 similar fronts in the bottom wall 12 within the EUIe 17. These grooves form fold lines that will show up as the bottom wall 12 moves on the top lip of the container as described below. Several posts 21-23 can, if desired, be on the floor shroud 12 to provide stable support.

Once the container C has been formed, a preselected amount is used • Ines products · F handed over to the painters · OemäB of the previous · - The invention is dl · the amount of product dispensed ί less than the formed circumference of the container C. The product F can have any kind of su handling and su packaging · Bme in Flg. 4 The product referred to is a liquid whose upper surface is located below the flange 16. Consists da · product made of particles or semi-solid material, so its top surface may not be in same height. The fact that the volume of the material

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- ^; '■ - ■ <"' ■ ' " ■ ".: _BA o ORIGINAL

less than the volume of the reservoirs formed is an obvious advantage of this circumstance. If the product consists of particulate matter _t it is understandable that its size is the actual size of the material including the spaces in between.

After the product P is filled into the container C, the The container is placed in an evacuable chamber and the air is evacuated from it. The container then becomes old one

Deokel closed and released from evacuation · Bas

Order vacuum remains inside the container, however. So effects when the compromised packaging is exposed to the atmosphere, the ataospheric pressure that the container eioh along the previous weakened area rUok forms. The floor 12 moves EU the Beokel while the container is formed «and The length of the container is essential to the size of the product contained therein reduced.

Although other devices can be used, this is a suitable device for performing the procedural steps diagranaatlsoh in fig. 1 illustrates. One roll 30 sas thermoplastic material is adjacent to sin Bnds of Ha-Bohlne supported. A web 31 is sucked by the Rolls «ad advanced along the machine over successive stations. Heiskeads 32 and 33 helsen the track 31 so that they la any desired shape can be deformed. The next station will be the ic. generally designated with C container la the path 31 by means of a fora 34 adjacent to its sinews Bahn, and by pressure adjoining the other selts druokverforat. It goes without saying that this vacuum can also occur, and the designation "druokverforaft" should be understood to mean that it alttels the deformation Includes pressure, vacuum and the like. As in VIg. 3 illustrates the fsm is located at the deforestation station

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34 supporting lower link 35 and an upper link 36. You Form 34 and the lower link 35 are in the direction of the arrows 37 wipe one generally continuous with the web (Fig. 3) Deformation setting and a second (in Fig. 1 bit dashed lines) moves «that of the Web is removed, so that the latter advanced intermittently can be «The links form the deformation position

35 and 36 a generally airtight chamber. One line 33 brings the inlet port 39 in the upper member 36 sit one Gas source under pressure (not illustrated) in connection. A valve 40 is suitably provided in the line 3d, to regulate the gas introduced through the inlet 39. As illustrated, the mold 34 advantageously has a the shaped container C is complementary in shape and is provided with a plurality of outlet openings 41 to allow air to pass through the underside of the web 31 to flow out during the deformation process. A drain hole 42 is conveniently provided by the lower member 35 and may have a valve 43 to prevent the outflowing Regulate air EU. If desired, a plug 44 be moved against the web 31 to help shape the container C au. As illustrated in Fig. 3, this can Stopper tool 44 moved back and forth in the direction of arrows 45 will. The web is expediently advanced by the gripper 46, which by means of the piston 47 in the direction the arrows 4ö to be moved back and forth.

The product P is then put into the container G by the belt or through a manifold 49 which can be mounted on the machine or, if desired, independently of the machine can. A second roll 50 is stored on the machine, and a sheet 51 is pulled out of it in order to be closed on the flange 16 of the container 10. In an advantageous manner become compatible thermoplastic materials for the web 31 and sheet 51 are selected, and the closure is

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the company Let it be understood, however, that others Materials and other wear methods can be used can. For example, an aluminum foil can be coated with a pressure sensitive or heat-sensitive coating is used and the covering can be achieved by applying heat, pressure or by both can be accomplished. However, it is necessary that the sheet 51 bridges the open end of the container C in order to to provide a cover for this and to be closed on this. The sheet or lid member 51 becomes adjacent to stored the splash 16, and the container C and the lid member 51 are then placed in a vacuum chamber, which is in the

generally denoted by X. At chamber X, the air is evacuated from the chamber and the container C and the lid member 51 is locked on the plan 16.

As illustrated, the vacuum chamber X has an under · « Member 52 and a top member 53 which can be moved side by side to form a substantially airtight enclosure to build. A closing head 54, the shape of which is generally the plan 16 for closing the cover member 51 on this corresponds to, is mounted on the upper link * 53. The closing head 54 can be between one of the cover member (Fig. 5) removed Position and a locking position are moved, in which it is in engagement with the lid member (Pig. 6). The locking head can be in any suitable manner be heated, or it can be designed to provide a Pressure depletion occurs when a pressure sensitive adhesive is used. If desired, high-frequency locking and other methods of wear and tear can be used. Of the Closing head 54 is generally provided with openings 55 which help to close the chamber and the container evacuate. The chamber can be with the atmosphere or old one Vacuum pump (not shown) by means of a valve

56 be brought into connection, which in an outlet pipe

57 of the chamber is arranged. As illustrated, this is under »

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Olltd 52 ait a passage 58 provided which the upper and the lower part of the chamber connects with each other and with the air this makes it possible to step out when the chamber is evacuated. In advantageous catfish a high vacuum »e.g. around 27 to 29 inches C 69 to 74 em). Mercury sucks. Xst the desired air ■ tightness evacuated, the seal is made and the valve 56 is moved to an open position to close the chamber with to connect the atmosphere.

After the chamber has been evacuated and the lid 51 is closed on the container C, as illustrated in FIG When exposed to atmosphere, the atmospheric pressure exerted on the container acts to cause the container to rttek along the intended weakened area. At this time the bottom 12 then moves towards the lid, while the container is flocculating along the weakened area, and the width of the container is reduced essentially to the circumference of the product inside it. As illustrated below, the bottom 12 has a central portion 12a which is initially advantageously formed so that it is further away from the top of the container C than the junction 15. The center portion 12a is illustrated as representing that portion of the base 12 which is within the weakened area or groove 18, but it will be understood that it may include that portion which is within the weakened area or groove 17 is located. It is precisely in the middle part 12a that the movement bu of the lid 51 or the upper part of the container C can most easily be perceived. The movement can take place in such a way that the middle part 12a, as in Pi ₁ -. 7 illustrates “moved over a center point. During the movement of the floor 12

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BATH

au dta cover 51 towards the outwardly extending Flange 16 the top of the carton while the assembly is taking place. Sa a weakened area is provided regulates the position of the fittokbildung and it results in a attractive packaging, which is essentially filled with the product, and without the risk of the top Sand or flange 16 dirty during the packaging process.

Bio the packaging euthal'tenda web is then advanced to a further station 64, where the packaging is cut out by the cutters 66 and 66 from the web. T) Ie finished packages are stored in a suitable manner on a »» conveyor belt 63, and the waste portions of the web are guided out of the machine, _# wi β, this is geeeigt at 69th

Obviously it is not necessary to have the container In a path, as veraneohaulicht, you can form »ee Also one of its containers, gives way to a preformed one Area sjb are provided at the bottom of the container, ▼ can be used. Furthermore, the filling can «evacuate and sealing at a station, if desired, can be carried out, which is also entirely within the scope of the invention. is deoct.

In a broader scope, the present invention does not extend dl · illustrated and described special procedural steps limited, but deviations can be anticipated without departing from the principles of the present invention. suwelchen and without losing the main advantages of the same su.

BATH 0098U / 0854.

Claims (5)

Claims ^r 1. ^ / method for vacuuming a 'preselected amount of material, characterized by the formation of an open-topped container of semi-solid material with a circumference which is greater than that of the preselected Mafcerialmange, and with a weakened area located remotely from the top, by arrangement the preselected amount of material in the container, further by enclosing the container in a chamber and evacuating the air from the chamber and container, hermetically sealing a lid on the container while it is held in the chamber, and releasing the evacuation of the chamber in order to reverse the container at the weakened area due to atmospheric pressure to the exterior of the container and thereby to reduce the extent of the same to the extent of the preselected amount of material. . In that the container side and bottom walls 2. A vacuum packaging method according to claim 1, characterized in that and that elöhr is the weakened area adjacent to the junction of the side and bottom walls. 3. A method for vacuum packaging according to claims 1 and 2, characterized characterized in that the deformation of the container takes place in such a way that that a flat strip of thermoplastic material behelct and that the strip is compression deformed against a shape around a cup-shaped container with an outward curve Urafangeflanach to form on the top of the container. 4 · Process for vacuum packaging, according to claims 1-5, thereby characterized that the container eo is made that it a generally open upper part, and that the bottom - to - eioh ait of their middle part initially far away τοη dea The top of the container is located as the junction. 5. The method sub vacuum packaging according to claims 1-4, characterized characterized in that the process step of closing of the container are the further step that the Beekel is closed on the peripheral flange. 6 «Method according to each of the preceding claims, marked that the formation of the container is a weakened Area in pora of a groove in the floor wall is created. 7 · The method according to claim 6, characterized in that the The groove has a general V-shaped cross-section and the Container provided with a second groove of similar cross-section as the first-mentioned groove and within the same is arranged BATH ORIGINAL 0098U / 085A Blank page