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WO2000002781A1 - Dispositif antimousse pour machine de conditionnement - Google Patents

Dispositif antimousse pour machine de conditionnement Download PDF

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Publication number
WO2000002781A1
WO2000002781A1 PCT/US1999/015384 US9915384W WO0002781A1 WO 2000002781 A1 WO2000002781 A1 WO 2000002781A1 US 9915384 W US9915384 W US 9915384W WO 0002781 A1 WO0002781 A1 WO 0002781A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical terminal
electrical
accordance
packaging machine
defoaming
Prior art date
Application number
PCT/US1999/015384
Other languages
English (en)
Inventor
Karl Frei
Sevugan Palaniappan
Robert Massey
Ken Pokusa
Original Assignee
Tetra Laval Holdings And Finance, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tetra Laval Holdings And Finance, S.A. filed Critical Tetra Laval Holdings And Finance, S.A.
Priority to JP2000559020A priority Critical patent/JP2002520226A/ja
Priority to AU49749/99A priority patent/AU4974999A/en
Priority to US09/743,331 priority patent/US6694705B1/en
Publication of WO2000002781A1 publication Critical patent/WO2000002781A1/fr
Priority to NO20010110A priority patent/NO323711B1/no

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
    • B67D1/127—Froth control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/22—Defoaming liquids in connection with filling

Definitions

  • the present invention relates to defoaming devices for foamable products. Specifically, the present invention relates to a defoaming device utilized on a packaging machine to decrease the foam level in a container prior to sealing of the container.
  • productivity is synonymous with the ability to produce a greater number of cartons per hour than previous machines.
  • the ability to produce higher capacity machines is accomplished by analyzing, and as necessary, modifying each action performed on the machine.
  • the dwell time may be lessened while the indexed movement is increased in order to achieve higher capacity on the packaging machine.
  • the dwell time is defined as the time period that each preformed container is stationary on the machine while an action is performed on the container.
  • the indexed movement is defined as the time period that each pre-formed container is conveyed along the packaging machine from one station to the next.
  • Another possibility for increasing capacity would be to reduce the number of indexed dwell positions on the conveyor line.
  • One possible dwell position that may be eliminated is the extra dwell position between the filling station and top sealing station. This station allows for the product foam in a recently filled container to settle prior to top sealing, which prevents wetting of the sealing area of the container with product foam.
  • Other packaging machines such as rotary filling machines and vertical form, fill and seal machines have exhibited similar problems with foamable products.
  • One defoaming technique is set forth in U.S.
  • Patent 4,295,502 entitled “Method And Apparatus For The Elimination Of Foam Above The Level Of A Liquid, And Particularly Above A Packaged Liquid Such As Milk.”
  • This technique discloses the use of ultrasonic waves to decrease the product foam in a container through disruption of the foam bubbles.
  • the technique requires ultrasonic equipment positioned above the conveyor line.
  • the ultrasonic device will increase the noise level on the packaging machine, and if other ultrasonic devices are employed on the machine, such as ultrasonic fitment applicators, then already high decibel levels may be doubled, coming close to intolerable decibel levels. Safeguards and other additions may be added to the machine to reduce noise, however, this further increases the cost of the packaging machine.
  • the use of ultrasonics for defoaming purposes has proven ineffective.
  • An alternative defoaming device is needed in the packaging industry to increase the packaging capacity of machines.
  • Such a device desirably reduces foaming of the newly filled package, with minimal if any impact on the operating speeds of the overall packaging machine operation.
  • Most desirably, such a device fits within the known physical parameters and sizing of known packaging machines.
  • the present invention provides an alternative to ultrasonic defoaming which effectively defoams a container filled with a foamable product.
  • the present invention accomplishes this by providing a defoaming device that creates a shock wave to destroy or collapse the bubbles of a foamable product inside a container after filling.
  • One aspect of the invention is a defoaming device having a body with a reflective recessed cavity. Inside the cavity are two electrical terminals that, when a voltage is applied to one terminal, an arc is created between the terminals to complete the circuit. The discharge or arc superheats the air inside of the recessed cavity to create a shock wave. The shock wave is directed toward the container to destroy the bubbles of the foam.
  • Another aspect of the invention is a packaging machine having such a defoaming device positioned between a filling station and a top sealing station.
  • Yet another aspect of the invention is a method for defoaming a carton filled with a foamable product. It is a primary object of the present invention to provide a method and apparatus to defoam pre-formed containers filled with a product on a packaging machine.
  • FIG. 1 is a top perspective view of a packaging machine
  • FIG. 2 is an isolated view of the fill pipe, defoaming device, prefolder and top sealer of the packaging machine of FIG. 1;
  • FIG. 2a is an isolated view of the defoaming device of FIG. 2;
  • FIG. 3 is a partial cross-section side view of an open ended gable top carton;
  • FIG. 4 is a partial cross-sectional side view of a folded top gable top carton of the prior art;
  • FIG. 5a illustrates a gable top carton being filled with a foamable product
  • FIG. 5b illustrates a filled gable top carton with foam
  • FIG. 5c illustrates a filled gable top carton being defoamed at the defoaming device of the present invention
  • FIG. 5d illustrates a defoamed gable top carton
  • FIG. 5e illustrates a defoamed gable top carton undergoing folding at a pre-folder station
  • FIG. 6 is an isolated view of an alternate embodiment of the defoaming apparatus of the present invention over a plastic container such as a PET bottle which can be filled on a rotary filling machine;
  • FIG. 6a is a cross-sectional plan view of the apparatus of FIG. 6, more clearly illustrating the filter/screen of the apparatus;
  • FIG. 7 a schematic view of a TETRA TOPTM packaging machine having the defoaming device of the present invention integrated thereon;
  • FIG. 8 is a schematic diagram of a vertical form, fill and seal packaging machine;
  • FIG. 9 is a cross-sectional view of the machine FIG. 8 with the defoaming device of the present invention disposed about the fill pipe;
  • FIG. 10 is an electrical schematic diagram of a trigger circuit used in one embodiment of the present invention.
  • FIG. 11 illustrates a sound guide that is used in one embodiment of the invention.
  • TETRA REX® machine available from Tetra Pak, Incorporated of Chicago, Illinois.
  • Linear packaging machines may process one, two or any multiple of cartons simultaneously with each multiple of cartons being conveyed one indexed movement from station to station.
  • the present invention allows for cartons filled with a foamable product to be defoamed prior to pre-folding and/or top sealing.
  • a dual line packaging machine 20 for forming, filling and sealing cartons generally includes a defoaming device 22, a top sealing station 24 and a filling station 26, a sterilization station 28 which is composed of an ultraviolet radiation station 30 and a hydrogen peroxide station 32, a bottom forming station 36, a carton opener 37, and a carton blank magazine 38.
  • the front 40 of the packaging machine 20 is where the processing begins, and the rear 42 is where the finished cartons are dispensed for distribution.
  • the packaging machine 20 may be divided along a horizontal plane defined by a table top 44.
  • the table top 44 divides the packaging machine 20 into an upper half 46 and a lower half 48.
  • a frame 50 defines the general structure of the packaging machine 20 and supports the table top 44 and the various stations.
  • the lower half 48 of the machine 20 includes servomotors, drive cylinders, cam drives and other components.
  • the upper half 46 includes the various stations, the product tank 56, the filtered air system 58, the conveyor system 60, not shown in FIG. 1, and other components to process the cartons.
  • the defoaming device 22 is positioned between the filling station 26 and a pre-folder station 62.
  • a filling station 26 is described in co-pending U.S. Patent application Serial No. 08/897,554, entitled “Dual Stream Filling Valve” and in copending U.S. Patent application Serial No. 08/816,056, entitled “Elliptical Cleaning Box For Filling Apparatus,” both of which are hereby incorporated by reference.
  • the defoaming device 22 will cover two open top cartons being processed on a dual carton processing packaging machine 20. For example, two cartons are filled simultaneously at two fill pipes 70a-b, then conveyed to the defoaming device 22 in the next indexed movement to be defoamed, if necessary. Both cartons are conveyed under the defoaming device 22 for defoaming before the pre-folding station 62.
  • two smaller defoaming devices 22 can be used, with one device each being positioned over a carton for individually and independently defoaming the cartons before pre-folding at the pre-folder station.
  • one carton is defoamed during the dwell while the other carton is defoamed during the indexed movement.
  • the packaging machine 20 may process only a single carton at each station, or it may process a multiple of cartons at each station.
  • the defoaming device can be modified to accommodate any of the above alternatives, or any multiple of cartons processed in an indexed movement on the packaging machine 20, without departing from the scope and spirit of the present invention.
  • the positioning of the defoaming device 22 over a dual processing line is best shown in FIG. 3.
  • Two cartons 80a,b are positioned below the defoaming device 22.
  • the defoaming device 22 has a body 100 that defines a recessed cavity 102.
  • the recessed cavity 102 has a parabolic shape into the body 100 thus forming a parabolic ceiling 104 of the recessed cavity 102.
  • This ceiling 104 is reflective to direct air towards the interior of each carton 80a,b.
  • Projecting from the body 100 are two electrical terminals 106 and 108.
  • terminal 106 can be a cathode and terminal 108 can be an anode.
  • a high voltage current is sent through terminal 106 thereby establishing an electrical arc 109 between terminal 106 and terminal 108.
  • a sonic shock wave illustrated by arrows 110, is created by the electrical discharge.
  • the shock wave 110 arises from the super-heating of the air within the recessed cavity 102 by the electrical discharge, similar to lightening. As the air heats, it expands thereby increasing the pressure within the recessed cavity 102.
  • the sonic shock wave 110, or compressed air is directed toward the interior of the cartons 80a,b to destroy the foam bubbles thereby defoaming the product in anticipation of pre-folding.
  • the reflective ceiling 104 acts to reflect all vectors of the shock wave toward the interior of the cartons 80a,b to increase the defoaming effect of the shock wave 110.
  • the ceiling 104 may be of a non-parabolic shape and be within the scope and spirit of the present invention.
  • the body 100 may be encapsulated by a protective shield 112 composed of a metal or other protective material.
  • a protective screen 114 may be placed over the recessed cavity to prevent contact with the terminals 106 and 108.
  • the screen 114 may also be a radio frequency filter to absorb radio waves created with the sonic shock wave. The radio waves may have a deleterious effect on the operation of the packaging machine.
  • a power supply 1 16 is connected to the terminals 106 or 108 to supply the high voltage current.
  • One of the terminals 106 or 108 may also be connected to a ground 118.
  • a carton 80 filled with a foamable product 201 filled therein is shown in FIG. 3.
  • the liquid level is approximately shown at line 199.
  • the foamable product 201 has bubbles 200 that approach the sealing areas 91 of the carton 80.
  • the same carton 80 is illustrated in FIG. 4 undergoing pre-folding without defoaming, as performed in the prior art.
  • the bubbles 200 of the foamable product 201 "wet" the sealing areas 91 of the carton 80. Such wetting will interfere with proper sealing of the carton 80 and render the product filled carton 80 defective.
  • a ten millimeter thick layer of foam will require approximately forty-nine milliliters of volume.
  • the volume between the level of the product and the top of the carton is approximately forty-nine milliliters.
  • FIGS. 5a-d illustrate the filling, defoaming and pre-folding of a single carton.
  • a carton 80 is bottom-up filled with a foamable product 201 such as milk.
  • a fill pipe 207 with a nozzle 209 attached thereon fills the carton as it is lowered on a lifter 211.
  • the liquid level 199 remains in proximity to the nozzle 209 during the entire filling process to reduce the amount of foaming.
  • the carton 80 is now filled with a foamable product 201 and conveyed to the defoaming device 22.
  • the carton may contain any volume from one liter to one half gallon to one gallon.
  • the cross-section of the carton may vary, for example from a 70mm x 70mm cross section to a 47mm x 47mm cross-section to a 70mm x 95mm cross section.
  • the defoaming device 22 is defoaming the carton.
  • the terminals 106 and 108 create an electrical discharge, and the heated air in the form of one or more shock waves 110 is directed by the reflective ceiling 104 toward the bubbles 200 of the foam of the foamable product 201.
  • a single electrical discharge with an energy of 2 x 10 "5 joules has been found to be sufficient to collapse all of the foam bubbles in a carton having a cross-section of 70 mm x 70 mm.
  • the voltage delivered may be 15 kilovolts and the distance between the electrodes and the foam may be 1 to 2 centimeters. However, other parameters may be used in practicing the present invention.
  • FIG. 5d a carton with a defoamed product is ready for pre-folding as shown in FIG. 5e.
  • FIGS. 6 and 6a An alternate embodiment of the defoaming apparatus 122 is illustrated in FIGS. 6 and 6a.
  • the alternative defoaming apparatus 122 is constructed as a semi-isolated component on a machine.
  • the defoaming apparatus 122 has a built-in step-up transformer 300 that receives standard voltage from a power supply along standard voltage line 301, and transforms the electricity to a higher voltage for delivery to a high voltage power line 302 and to the electrode 106.
  • a ground 303 is connected to electrode 108 for delivering the after-effects of the arc/charge 109 to ground.
  • the electrical circuit 400 includes a trigger circuit 402, as shown in FIG. 10.
  • the electrical circuit 400 includes a high voltage power supply 404, a current limiting resistor 406, a storage capacitor bank 408, a discharge resistor 410, a discharge relay 412 and the electrodes 106, 108.
  • the trigger circuit 402 enables the initiation of a spark upon receipt of a control signal. It has been observed that in a circuit without a trigger circuit, a spark will initiate when the potential (voltage) across the electrodes reaches a "value" sufficient to overcome the resistance of the air between the electrodes. As will be recognized by those skilled in the art, this "value" can be dependent upon a number of external or environmental factors, such as temperature, humidity, ion concentrations and the like.
  • the trigger circuit 402 uses an ionization method in which a high voltage trigger pulse is applied to one side of an insulating plate 414. This ionizes the gas (typically air) between the electrodes 106, 108 to initiate the discharge (spark).
  • a high voltage trigger pulse is applied to one side of an insulating plate 414. This ionizes the gas (typically air) between the electrodes 106, 108 to initiate the discharge (spark).
  • the gas typically air
  • electrode 106, 108 fouling can affect the spark, and typically compromises spark generation by lowering the resistance path from the high voltage electrode 106 to ground. It has been found that fouling can be reduced or eliminated by spacing the defoaming device body 100 and electrodes 106, 108 from the product as it is filled into the carton 80. In such an arrangement, a sound guide 500, such as that illustrated in FIG. 11, can be positioned between the body 100 and the carton 80. In this manner, any liquid that may project as the foam or bubbles collapse will not project so far as to contact, land on, or accumulate on the defoaming device 22 and in particular on the electrodes 106, 108. In one embodiment, as illustrated in FIG.
  • the sound guide 500 has a body 502 that is configured as an elongated cylindrical tube.
  • the tubular body 502 essentially envelopes the shock waves 110 that emante from the spark and directs the waves 110 onto the foamed product 201 in the carton 80.
  • the foamable product 201 is filled into a plastic container 333 having a rim 351.
  • the plastic container 333 maybe any type of plastic container such as a PET bottle, a high-density polyethylene bottle, or the like.
  • the product may be any type of foamable product such as milk, cranberry juice, pineapple juice and grapefruit juice, as well as other foamable food products, and other foamable non-food products.
  • the apparatus 22 may be integrated on various types of filling machines such as rotary fillers, linear fillers, vertical fillers and even in batch foamable product processing units. The defoaming apparatus 22 of the embodiment of FIG. 6 obviates the need for connecting high voltage power lines to the machine.
  • the defoaming apparatus 22 is connected to a standard power supply line, for example a 110 volt power line. This electricity is then transformed to a higher voltage by the transformer 300 within the apparatus 22, thus providing a safer work environment and also limiting any interference that a high voltage line might have on a machine.
  • an alternative packaging machine that may use the defoaming device of the present invention is generally designated 500.
  • the machine 500 creates a package with a f ⁇ berboard based body and an injection molded plastic top known as the TETRA TOPTM package that is available from the aforementioned Tetra Pak, Incorporated.
  • a web of material 502 is formed into a carton sleeve at a forming station 504.
  • the sleeve is placed on a mandrel 506 and rotated to an injection molding station 508 where the plastic top is created.
  • the partially formed package is placed on a conveyor 509.
  • the package is filled at a filling station 510 with a foamable product 201 that is received from a product tank 512.
  • the defoaming apparatus 22 is disposed adjacent the fill station 510, similar to the arrangement on the gable-top carton packaging machine 20.
  • the bottom of the package is sealed at a bottom forming station 514 and the bottom flaps are sealed at a flap sealing station 516.
  • the package is released from the conveyor 509 for further distribution.
  • the defoaming apparatus 22 will defoam the product filled package allowing for better bottom sealing of the package.
  • Yet another packaging machine that may utilize the apparatus 22 is a vertical form, fill and seal packaging machine. An example of such a machine is shown in FIGS. 8 and 9.
  • the machine fabricates fiberboard packages such as the ubiquitous TETRA BRIK® package, or flexible plastic pouches such as a TETRA POUCHTM package.
  • the vertical packaging machine 600 receives a web of material 602.
  • the material 602 is formed around a fill tube 604.
  • the material is formed into a tube 607 by a longitudinal sealer 606.
  • the package is then cut-away from the tube 607 at a transversal sealer 608.
  • the defoaming apparatus 22 can be mounted about the fill pipe 604 between the longitudinal sealer 606 and the transversal sealer 608.
  • the apparatus 22 can also contact the bubbles 200 and/or the foamable product 201.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Basic Packing Technique (AREA)

Abstract

On décrit un dispositif antimousse (22) qui élimine la mousse d'un produit moussant dispersé dans un contenant, tel qu'un carton à pignon de type TETRA REX (80). Le dispositif antimousse (22) crée une onde de choc sonique (110) qui détruit la plupart, sinon toutes les bulles du produit moussant. Le dispositif antimousse (22) comprend un corps (100) délimitant une cavité encastrée (102) à l'intérieur de laquelle est logée une paire d'électrodes (106, 108). L'ouverture donnant sur la cavité (102) peut être munie d'un filtre radiofréquence (114) couvrante pour absorber les ondes radioélectriques créées par l'onde de choc sonique (110). Le dispositif antimousse (22) se met en place, de préférence, immédiatement après le remplissage du contenant (80).
PCT/US1999/015384 1998-07-08 1999-07-08 Dispositif antimousse pour machine de conditionnement WO2000002781A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2000559020A JP2002520226A (ja) 1998-07-08 1999-07-08 包装機械の消泡装置
AU49749/99A AU4974999A (en) 1998-07-08 1999-07-08 Defoaming device for a packaging machine
US09/743,331 US6694705B1 (en) 1999-07-08 1999-07-08 Defoaming device for a packaging machine
NO20010110A NO323711B1 (no) 1998-07-08 2001-01-08 Skumdempende anordning for pakkemaskin, fremgangsmate for behandling av beholdere i pakkemaskin og pakkemaskin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11153698A 1998-07-08 1998-07-08
US09/111,536 1998-07-08

Publications (1)

Publication Number Publication Date
WO2000002781A1 true WO2000002781A1 (fr) 2000-01-20

Family

ID=22339087

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/015384 WO2000002781A1 (fr) 1998-07-08 1999-07-08 Dispositif antimousse pour machine de conditionnement

Country Status (4)

Country Link
JP (1) JP2002520226A (fr)
AU (1) AU4974999A (fr)
NO (1) NO323711B1 (fr)
WO (1) WO2000002781A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9283498B2 (en) 2009-10-27 2016-03-15 Toyo Seikan Kaisha, Ltd. Defoaming method and device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5679116B2 (ja) * 2011-03-08 2015-03-04 東洋製罐株式会社 消泡装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169561A (en) * 1962-02-14 1965-02-16 Northern Ind Inc Defoaming system
US4076617A (en) * 1971-04-22 1978-02-28 Tii Corporation Sonic cavitation and ozonation of waste material
US4295502A (en) * 1979-07-04 1981-10-20 Jagenberg Werke Ag Method and apparatus for the elimination of foam above the level of a liquid, and particularly above a packaged liquid such as milk
US5447016A (en) * 1992-10-01 1995-09-05 Shikoku Kakoki Co., Ltd. Packaging machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169561A (en) * 1962-02-14 1965-02-16 Northern Ind Inc Defoaming system
US4076617A (en) * 1971-04-22 1978-02-28 Tii Corporation Sonic cavitation and ozonation of waste material
US4295502A (en) * 1979-07-04 1981-10-20 Jagenberg Werke Ag Method and apparatus for the elimination of foam above the level of a liquid, and particularly above a packaged liquid such as milk
US5447016A (en) * 1992-10-01 1995-09-05 Shikoku Kakoki Co., Ltd. Packaging machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9283498B2 (en) 2009-10-27 2016-03-15 Toyo Seikan Kaisha, Ltd. Defoaming method and device

Also Published As

Publication number Publication date
NO20010110D0 (no) 2001-01-08
NO20010110L (no) 2001-02-12
JP2002520226A (ja) 2002-07-09
NO323711B1 (no) 2007-06-25
AU4974999A (en) 2000-02-01

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