EP0039056B2 - Verfahren und Vorrichtung zum Herstellen von Vakuum-Skin-Verpackungen - Google Patents

Verfahren und Vorrichtung zum Herstellen von Vakuum-Skin-Verpackungen Download PDF

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Publication number
EP0039056B2
EP0039056B2 EP81103098A EP81103098A EP0039056B2 EP 0039056 B2 EP0039056 B2 EP 0039056B2 EP 81103098 A EP81103098 A EP 81103098A EP 81103098 A EP81103098 A EP 81103098A EP 0039056 B2 EP0039056 B2 EP 0039056B2
Authority
EP
European Patent Office
Prior art keywords
web
vacuum chamber
sealing
upper web
lower web
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP81103098A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0039056A1 (de
EP0039056B1 (de
Inventor
Dietmar Send
Ralf F. Paulsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dixie Union Verpackungen GmbH
Original Assignee
Dixie Union Verpackungen GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6100868&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0039056(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dixie Union Verpackungen GmbH filed Critical Dixie Union Verpackungen GmbH
Priority to AT81103098T priority Critical patent/ATE14555T1/de
Publication of EP0039056A1 publication Critical patent/EP0039056A1/de
Publication of EP0039056B1 publication Critical patent/EP0039056B1/de
Application granted granted Critical
Publication of EP0039056B2 publication Critical patent/EP0039056B2/de
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
    • B65B11/52—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins one sheet being rendered plastic, e.g. by heating, and forced by fluid pressure, e.g. vacuum, into engagement with the other sheet and contents, e.g. skin-, blister-, or bubble- packaging

Definitions

  • the invention relates to a method and a device for vacuum skin packaging of relatively high packaged goods between a thermoplastic upper web and a thermoplastic lower web, the packaged goods being inserted between the flat lower web and the initially flat and only heated upper web and introduced into a vacuum chamber.
  • a vacuum chamber which consists of an upper part and a lower part.
  • the lower web is narrower and the upper web wider than the vacuum chamber.
  • the air is sucked out of the space between the sheets while the lower sheet is heated.
  • the lower web is heated by a heated sealing plate which in a recess in the lower part of the vacuum opening edge of the upper part has such a width that it bears against the opening edge of the lower part when the vacuum chamber is closed and partially overlaps with the sealing plate.
  • the top web is pressed against the bottom web by means of negative pressure for surface sealing, whereby the space above the top web is ventilated during the sealing time.
  • a method and a device for vacuum packaging is known, wherein depressions are first molded into a lower web under the action of heat and pressure, into which the packaged goods are placed.
  • An upper web is passed over the lower web, and the two webs are heated and the two webs are sealed in a vacuum and sealing chamber.
  • a heating plate is moved against the top web from above.
  • the vacuum chamber is ventilated with the result that the atmospheric pressure acts on the closed pack and the packaged goods, the molded depression being deformed. Shrinkage forces are triggered, which means that the goods also attach to the concave surfaces of the packaged goods.
  • the invention solves the problem of producing an airtight skin packaging, even with packaged goods of relatively great height, which in particular also has a sufficient seal for packaging perishable foods.
  • the advantages that can be achieved by the invention consist in particular in that the additional sealing of the webs by mechanical pressure and heat, which is referred to below as contour sealing, makes better use of the size of the webs. that is, the packaged goods can be larger in relation to the dimensions of the webs than with pure surface sealing. While there must be an edge of at least 20 mm around the packaged goods for surface sealing, it is sufficient in the method according to the invention to provide an edge of about 10 mm.
  • the web it is expedient not only to guide the top web, but also the bottom web, at the lateral edges, through guide bars.
  • the lower web is guided right up to the vacuum chamber.
  • the vacuum skin packaging is moved out of the vacuum chamber by the guide chain of the upper web and thereby pulls the lower web. If the lower web is guided through its own guide chains right up to the vacuum chamber, only little force is exerted on the sealing seams by the redrawn lower web.
  • the preheating of the top web can cause the top web, which is in its plastic state due to the heating, to sag.
  • the guide chains of the top track livelier so that their distance increases.
  • the upper web is kept taut even after heating and when it is introduced into the vacuum chamber.
  • the air is drawn out between the webs. Precautions must be taken to ensure that the webs do not touch and stick together when they are introduced into the vacuum chamber. This is preferably achieved by the webs entering the vacuum chamber at an acute angle to one another and only touching at the end of the vacuum chamber.
  • a height-adjustable sealing plate is preferably arranged in the lower part of the vacuum chamber, which after the vacuum chamber is closed is initially in its deep position of a few millimeters below the opening edge of the lower part, so that a corresponding gap remains between the webs through which the air can be drawn off.
  • the sealing plate is raised and seals the two webs between itself and the sealing rubber at the opening edge of the upper part.
  • a fabric band is preferably stretched over the lower part, which supports the lower web on its way through the vacuum chamber and prevents the lower web and the packaged goods from lying directly on the heated sealing plate.
  • the guide chain links are deflected downwards by chain wheels.
  • the drive plates of the guide chain damage the edges of the lower web.
  • the drive plates are preferably tilted away to the side so that they cannot come into contact with the side edges of the lower web when the conveyor chains are deflected.
  • the sideways tilting of the carrier plates is achieved in that the carrier plates run onto a conical lifting ring arranged centrally to the chain wheel.
  • the packaging consists of an upper web 1 and a lower web 2, which are sealed together.
  • the webs consist of thermoplastic films, in particular films of thermoplastic ionomer resins based on crosslinked ethylene copolymers, as are known under the trade name Surlyn 0.
  • the lower web 2 can, however, also consist of cardboard or another rigid material which has a coating of a thermoplastic material and is therefore heat-sealable with the upper web 1.
  • the sealing of the webs consists of a surface seal F and an additional seal produced by pressure and heat in a narrow edge strip 20, which is referred to here as contour seal K.
  • Such folds 21 are sealed at the edge of the pack by the additional contour sealing K.
  • the vacuum skin pack is produced in such a way that the packaged goods 5 are placed on the lower web 2 and the already pre-heated upper web 1 is arranged above the packaged goods 5.
  • the air is drawn off between the tracks and around the packaged goods 5 and at the same time the lower track 2 is heated to the extent that it is plastic.
  • the mechanical sealing in the narrow edge strip 20 causes the sealing seal K and the air pressure on the outside of the top web 1 places the top web 1 against the packaged goods 5 and against the bottom web 2.
  • the edge strip 20 extends around the entire package.
  • the package 3 can then be separated from the webs and any edge parts of the webs outside the edge strip 20 can be cut off.
  • the temperatures to which the top web 1 and the bottom web 2 are heated and the pressure which is exerted on the edge strip 20 depend on the film material and its thickness.
  • the top web is heated to a temperature of about 100 ° C and the bottom web is heated by contact with a sealing plate heated to about 90 ° C.
  • the pressure exerted in the edge strip 20 is of the order of magnitude of 200 N / cm 2 . This pressure is applied for about 1 second.
  • the lower web 2 is guided laterally by guide chains 4 over a table 22 on which the packaged goods 5 are placed onto the lower web 2 by hand or mechanically.
  • the guide chains 4 run around sprockets 23, 24 at the beginning and at the end of the table 22.
  • the lower web 2 is unwound from a supply roll 26 and is gripped by clamping members of the guide chain 4 at the sprocket 23 arranged at the beginning of the table 22. The clamping members and their mode of operation will be described in detail later.
  • the upper web 1 is unwound from a supply roll 26 by a guide chain 7 with the same clamping members as the guide chain 4 and passed under a preheating station 8, in which the upper web 1 is heated to such an extent that it is plastic. After the preheating station 8, the upper web 1 runs into a vacuum chamber 9. The upper web 1 is also guided through the vacuum chain 9 and then through the guide chain 7 until the vacuum pack is dispensed. The upper web 1 must therefore be wider than the vacuum chamber 9, since the guide chain 7 does not pass through it laterally through the vacuum chamber 9.
  • the lower web 2 is released at the sprocket 24 arranged immediately in front of the vacuum chamber 9 and the lower web 2 is taken behind the sprocket 24 by the upper web 1, starting from the point where both webs are sealed together.
  • thermoplastics used for the web have a very low mechanical strength in the warm state, so that there is a risk that the lower web 2 will tear or the upper web 1 will be separated along their two guide chains 7.
  • the vacuum chamber 9 consists of a raised and lowered upper part 10 and a stationary lower part 11.
  • the upper part 10 is box-shaped and is open at the bottom.
  • a sealing rubber 14 is attached to the horizontal part of the opening wheel.
  • the lower part 11 has a recess for a sealing plate 12 which can be raised and lowered by hydraulic or pneumatic devices.
  • the sealing plate 12 is heated on its entire upper side, in particular also in the edge regions, since the edge regions of the lower web 2 must have a sufficiently high temperature in order to produce the contour sealing in order to make the material plastic and sealable. Between the you gel plate 12 and the edge of the recess in the lower part 11 is only a small space of a few millimeters.
  • the upper side thereof In the lowered position of the sealing plate 12, the upper side thereof is located a few millimeters, preferably 8 mm, below the opening edge of the lower part 11. In its raised position, the sealing plate 12 presses against the sealing rubber 14 and the contour sealing of the two foils is thereby produced between the two.
  • the width and length dimensions of the sealing plate 12 must therefore be somewhat greater, namely by the width of the edge strip 20 of the contour seal, than the clear width and the clear length of the open underside of the upper part 10.
  • the width is the dimension transverse to the transport direction and below Length understood the dimension along the transport direction of the two tracks.
  • the inner dimensions of the recess in the lower part 11 lie approximately in the middle between the inner and outer dimensions of the opening edge of the upper part 10, so that the outer part of the sealing rubber 14 bears against the opening edge of the recess of the lower part 11 and acts as a seal.
  • the sealing rubber 14 preferably has a structure as shown in FIG. 12.
  • the structuring on the one hand ensures that the two webs are sealed together with high pressure and on the other hand it is avoided that the upper web 1 sticks to the sealing rubber 14.
  • the structuring can be grid-shaped, for example, so that the surface is waffle-patterned.
  • a suitable material for the sealing rubber 14 is silicone rubber with a Shore hardness of approximately 70 °.
  • the sealing rubber 14 can, for example, be connected to the upper part 10 in that it has a T-shaped profile which is inserted into a corresponding groove in the upper part 10.
  • the vacuum pack is produced in the vacuum chamber 9.
  • the upper part 10 is first raised to such an extent that the lower web 2 with the packaged goods 5 arranged thereon and the preheated upper web 1 arranged above it can enter the open vacuum chamber 9.
  • the transport takes place through the guide chain 7 of the upper web 1.
  • the vacuum chamber 9 is then closed, that is to say the upper part 10 is placed on the lower part 11, the outer part of the sealing rubber 14 acting as a seal.
  • the upper web 1, which is wider than the vacuum chamber 9, is clamped between the sealing rubber 14 and the opening edge of the lower part 11.
  • the lower web 2 is approximately as wide as the sealing plate 12 and must in any case be wider than the opening of the upper part 10 and narrower than the recess in the lower part 11.
  • the lower web 2 is thereby clamped only at the front and rear ends of the vacuum chamber 9, but not laterally.
  • the top web 1 is stretched over the packaged goods 5 in a tent-like manner.
  • the air is sucked out of the lower part 11 and thus also around the packaged goods 5, for example through a line 38 attached to the underside of the cutout in the lower part 11.
  • the sealing plate 12 is still located in its lowered position, so that a gap remains between the upper web 1 and the lower web 2 within the vacuum chamber 9, through which the air around the packaged goods 5 can be extracted.
  • the gap between the recess in the lower part 11 and the sealing plate 12 is also dimensioned such that the air can be sucked out through it.
  • the upper part 10 In the closed state of the vacuum chamber 9, the upper part 10 is sealed airtight from the lower part 11 by the upper web 1. In order to obtain pressure equalization when the lower part 11 is evacuated, the upper part 10 is therefore simultaneously evacuated via a line 37
  • the lower web 2 is heated and made plastic by heating devices in the sealing plate 12.
  • the sealing plate 12 is pressed upwards against the sealing rubber 14 by hydraulic or pneumatic devices, preferably by compressed air cushions 13. This creates the contour seal between the two webs and seals the package.
  • the upper part of the vacuum chamber is vented 9 10 via the line 37, so that the atmospheric pressure which builds up the heated, plastic upper t olie of the packaged goods 5 creates and shapes so the package. Due to the still existing negative pressure in the lower part 11, both webs in the part surrounding the packaged goods 5 are pressed together against the sealing plate 12, whereby the surface seal F is formed, in which both webs are welded on the entire surface around the packaged goods 5.
  • the vacuum chamber 9 can then be opened, for which purpose the lower part 11 is expediently ventilated beforehand via the line 38.
  • the finished vacuum pack can then be pulled out of the vacuum chamber 9 by the upper web 1, which is still held on the side of its guide chain, while at the same time the part of the upper web 1 and the lower web 2 required for producing the next vacuum pack with the next packaged goods 5 arranged thereon into the vacuum chamber 9 to be pulled.
  • the finished vacuum pack 3 When emerging from the vacuum chamber 9, the finished vacuum pack 3 first reaches a cooling plate 29 and then into a device 30 in which the vacuum pack 3 is cut in the longitudinal and transverse directions from the top web 1 and the bottom web 2. Up to this device 30, the vacuum pack is transported by the guide chain 7.
  • a separating device is expediently arranged, which prevents the lower web 2 from sticking.
  • a heat-resistant and friction-reducing tape can be stretched over the lower part 11, which by springs 31 on one or both sides of the lower part 11 is attached.
  • the tape is preferably a PTFE-coated glass fabric tape 15. The tension in the glass fabric tape 15 is sufficient to hold the packaged goods 5 and to prevent the lower web 2 with the packaged goods 5 thereon from entering the open vacuum chamber 9, to which When the sealing plate 12 is still in its lowered state, it lies directly on the sealing plate 12.
  • a device for further heating the upper web 1 can also be provided in the upper part 10 of the vacuum chamber 9.
  • the vacuum chamber 9 can be divided by partitions 32 in the upper part 10.
  • a sealing rubber 14 is again provided on the underside of the partition or partitions 32. In this way, several vacuum packs 3 can be produced simultaneously in a single vacuum chamber 9.
  • 6 and 7 show two possibilities of how the top web 1 can be guided in order to prevent it from coming into contact with the bottom web 2 and sticking to it when it enters the open vacuum chamber 9. 6, such sticking is prevented in that the guide chain 7 of the upper web 1 is guided through the last sprocket 25 arranged in front of the vacuum chamber and to the level of the opening of the lower part 11 of the vacuum chamber 9.
  • the acute angle is approximately such that the top web 1 runs in at the inlet end of the vacuum chamber 9 about 6 mm above the bottom web 2. This ensures that the two webs do not stick together prematurely and that there is a sufficient evacuation gap between the two webs after the vacuum chamber 9 has been closed.
  • FIG. 7 shows a further possibility for achieving this.
  • the upper web 1 is raised by approximately 6 mm in the entire area of the vacuum chamber 9. This increase is exaggerated in Fig. 7.
  • the vacuum chamber 9 is closed, the upper web 1 is then pressed down onto the edge of the lower part 11 of the vacuum chamber 9.
  • the sealing plate 12 in the lower part 11 of the vacuum chamber 9 is heated electrically. Due to the contact of the sealing plate 12 with the other parts of the vacuum chamber and due to radiation, there is a risk that the lower part 11 is heated so much overall that the webs stick to it. In order to avoid such uncontrolled heating of the lower part 11, the opening edge of the lower part 11 is preferably water-cooled.
  • Contour sealing K seals any folds 21 in the top web 1, but for trouble-free operation of the device it is expedient to take measures which already prevent the formation of such folds 21.
  • One of the measures taken for this is that, as already mentioned, the lower web 2 is also transported to the vacuum chamber 9 by a guide chain 4.
  • the guide chains 4, 7 consist of a chain 33, z. B. a Gall chain or a socket chain.
  • the outer link plates are designed as brackets 34, which carry a catch plate 16 and a helical compression spring 35.
  • the horizontal part of the angle 34 forms, together with the driving pocket 16, a beak which holds the upper web 1 and the lower web 2 in place.
  • the main part of the driving plate 16 is located above the angle 34 and is pressed against it by the helical compression spring 35, which is located on the opposite, lower side of the angle 34.
  • the beak opens and releases the web.
  • the beak is opened not only when gripping and releasing a web, but also expediently when the guide chains 4, 7 are deflected around chain wheels 23, 24, 25.
  • the beaks are offset in height with respect to the pins of the chain links, the beaks describe a larger path than the chain links themselves when the chains are deflected, so that the tracks also have to describe a larger path when deflecting around chain wheels and are therefore tensioned. So that the tension in the tracks is kept as small as possible and in particular does not concentrate on the beaks, the beaks are preferably opened in the area of the chain wheels 23, 24, 25. This is done by rings or disks 17 arranged centrally or eccentrically to the sprockets 23, 24, 25. The eccentric rings or disks 17 are arranged in such a way that the beaks open as early as possible so that the tension and elongation of the web are as large as possible Route distributed.
  • Another difficulty associated with the guide chain 4 for the lower track 2 is that when the lower web 2 is released by the sprocket 24 arranged in front of the vacuum chamber 9, the clamping members can readily release the lower web in the manner described, but the opened clamping members are then guided downward around the sprocket 24. There is a risk that the raised drive tab 16 crosses the path of the lower web 2 and tears it.
  • the driver plates in the area of the sprocket 24 are not only raised as shown in FIG. 9, but also tilted to the side, so that the distance between the carrier plates on both sides of the lower web 2 extending guide chains 4 is enlarged and larger than the width of the lower web 2.
  • the distance between the guide chains is increased in order to keep the upper web 1 as taut as possible and to prevent the upper web 1 heated in the preheating station 8 from sagging. If the upper web 1 were to sag when it entered the vacuum chamber 9, this would favor the formation of folds when the packaged goods 5 were stretched over. This is shown in detail in FIG. 8.
  • the distance between the chain wheels 25 after the preheating station 8 is a total of about 5 mm greater than the distance between the chain wheels 25 before the preheating station 8, that is to say the width of the upper web 1 is expanded by about 5 mm .
  • the extent 36 of the stretch naturally depends on the material, the thickness and the width of the top web 1 and the temperature to which the top web 1 is heated by the preheating station 8.
  • the top web 1 can be heated by contact with a heating plate, by infrared emitters or by hot air.
  • a heating plate has the disadvantage that when the length of the upper web 1 to be heated is changed, the heating plate must either be replaced or partially covered. Different heating of individual zones is difficult to achieve; in addition, the upper web 1 must be brought into contact with the heating plate either by vacuum or by compressed air, which increases the mechanical structure.
  • a radiator array is therefore preferably composed of individual heating elements 40, as shown in FIG. 4.
  • the heating elements 40 run transversely to the running direction of the web.
  • several of the heating elements 40 can be switched off individually.
  • heating elements 40 of different outputs can be used.
  • the performance of the individual heating elements 40 can also be controlled, for example, by triacs.
  • the entire radiator field formed by the heating elements 40 can be adjusted in the longitudinal direction with respect to the vacuum chamber 9.
  • the vacuum chamber is preferably designed to be exchangeable, so that it can be replaced in a few simple steps by another vacuum chamber with larger or smaller dimensions.
  • the length of the top and bottom web fed per cycle is controlled according to the longitudinal dimension of the vacuum chamber.
  • the design of the heating device with a plurality of separately controllable heating elements 40, the interchangeability of the vacuum chamber and the control of the feed length of the top and bottom webs together lead to an optimal adaptation of the respective package to the packaged goods.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP81103098A 1980-04-24 1981-04-24 Verfahren und Vorrichtung zum Herstellen von Vakuum-Skin-Verpackungen Expired - Lifetime EP0039056B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103098T ATE14555T1 (de) 1980-04-24 1981-04-24 Verfahren und vorrichtung zum herstellen von vakuum-skin-verpackungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3015847A DE3015847C2 (de) 1980-04-24 1980-04-24 Verfahren zum Vakuum-Skinverpacken von verhältnismäßig hohem Packgut und Vorrichtung zur Durchführung des Verfahrens
DE3015847 1980-04-24

Publications (3)

Publication Number Publication Date
EP0039056A1 EP0039056A1 (de) 1981-11-04
EP0039056B1 EP0039056B1 (de) 1985-07-31
EP0039056B2 true EP0039056B2 (de) 1991-10-23

Family

ID=6100868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103098A Expired - Lifetime EP0039056B2 (de) 1980-04-24 1981-04-24 Verfahren und Vorrichtung zum Herstellen von Vakuum-Skin-Verpackungen

Country Status (4)

Country Link
EP (1) EP0039056B2 (ja)
JP (1) JPS5737508A (ja)
AT (1) ATE14555T1 (ja)
DE (1) DE3015847C2 (ja)

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
US4826065A (en) * 1983-04-28 1989-05-02 Multivac Sepp Haggenmuller Kg Feeding means for feeding a machine web in a packaging machine
DE3315419A1 (de) * 1983-04-28 1984-10-31 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Transporteinrichtung zum fuehren einer materialbahn in einer verpackungsmaschine
DE3404451A1 (de) * 1984-02-08 1985-08-14 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Verpackungsmaschine mit einer versiegelungsstation
JPH0692304A (ja) * 1992-08-06 1994-04-05 Idemitsu Petrochem Co Ltd 容器のシール方法及びその装置
DE102004049266A1 (de) 2004-10-09 2006-04-13 Uhlmann Pac-Systeme Gmbh & Co Kg Siegelstation
WO2014095837A1 (en) 2012-12-21 2014-06-26 Novartis Ag Contact lens package
GB2574057A (en) * 2018-05-25 2019-11-27 Proseal Uk Ltd Vacuum dome and vacuum skin packaging apparatus
WO2020058278A2 (de) * 2018-09-17 2020-03-26 Gea Food Solutions Germany Gmbh Verpackungsmaschine zur herstellung einer flachskinverpackung

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
DE7219147U (de) * 1974-07-25 Multivac Haggenmueller S Kg Halteklammer für Bahnen von Verpackungsmaterial an Verpackungsmaschinen
US2017459A (en) * 1932-07-16 1935-10-15 Hallett D Howe Stencil printing and flocking machine
US2106612A (en) * 1935-08-06 1938-01-25 Gen Electric Straightener for woven material
GB840949A (en) * 1957-03-28 1960-07-13 Cellophane Invest Company Ltd Method and apparatus for packaging
BE631180A (ja) * 1962-04-17
NL296105A (ja) * 1962-08-02
US3260032A (en) * 1963-06-07 1966-07-12 William M Hill Apparatus for making packages
US3491504A (en) * 1967-10-02 1970-01-27 William E Young Method and apparatus for vacuum skin packaging
US3634993A (en) * 1970-05-06 1972-01-18 Young William E Bottom platen apparatus for forming skin packaging
US3686822A (en) * 1970-09-14 1972-08-29 Young William E Apparatus and method for skin packaging
DE2161465A1 (de) * 1971-12-10 1973-06-14 American Can Co Verfahren und einrichtung zur herstellung hermetisch abgedichteter pakkungen, aus denen die luft entfernt worden ist
US3890761A (en) * 1973-10-17 1975-06-24 Du Pont Vacuum skin packaging method
DE7340032U (de) * 1973-11-08 1977-09-15 Hermann Waldner Gmbh & Co, 7988 Wangen Materialbahn-Fördereinrichtung
DE2364565C2 (de) * 1973-12-24 1983-01-05 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Verfahren und Vakuumverpackungsvorrichtung zum Herstellen einer Packung
DE2608777C3 (de) * 1976-03-03 1982-04-15 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Versiegelungsstation
CA1086206A (en) * 1976-11-30 1980-09-23 Timothy T. Day Process and apparatus for vacuum packing
US4168598A (en) * 1977-03-01 1979-09-25 Omori Machinery Co., Ltd. Vacuum packaging method and apparatus
DE2843166A1 (de) * 1978-10-04 1980-04-24 Dixie Union Verpackungen Gmbh Vakuumverpackungsmaschine

Also Published As

Publication number Publication date
ATE14555T1 (de) 1985-08-15
JPS5737508A (en) 1982-03-01
EP0039056A1 (de) 1981-11-04
EP0039056B1 (de) 1985-07-31
DE3015847C2 (de) 1985-11-07
DE3015847A1 (de) 1981-10-29

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