US3360382A - Method of packaging meat - Google Patents

Method of packaging meat Download PDF

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US3360382A
US3360382A US516295A US51629565A US3360382A US 3360382 A US3360382 A US 3360382A US 516295 A US516295 A US 516295A US 51629565 A US51629565 A US 51629565A US 3360382 A US3360382 A US 3360382A
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lid
gas
cup
tunnel
package
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US516295A
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Harmon B Miller
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Scientific Atlanta LLC
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Scientific Atlanta LLC
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    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/043—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles acting horizontally between an upper and a lower part of the container or wrapper, e.g. between container and lid
    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/06—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
    • B65B25/065—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of meat
    • B65B25/067—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of meat combined with its conservation

Definitions

  • the present invention is concerned with a package and a method of packaging and, more particularly with'packaging in containers of rigid, transparent or translucent plastic of products such as sliced luncheon meats and, other perishable goods, especially with gas flushing of the contents.
  • a package comprising a hollow receptacle or cup of rigid plastic material having a bottom, sides and a laterally extending sealingflange at the upper edges of the sides.
  • An upright lip extends from at least a part and preferably all of the outer edge of the sealing flange.
  • the package is closed by a lid which overlies the cup and the flange and has a tab which projects beyond the lip. The tab rests on the lip when the lid initially is placed on the cup so that the lid is propped up and permits withdrawing of air from the cup and replacing it with a gas.
  • connection between the tab and the rest of the lid is scored or otherwise constructed so that, when the package is closed by pressing the lid against the flange, the tab is bent out of the way to fit within the lip. Ordinarily, the lid is heat sealed to the cup. As will be appreciated, the lip also is useful to retain the lid in place after breaking the seal, so that the package may be opened and reclosed by the purchaser.
  • the reclosable feature is not needed, or can be provided by a pressure-sensitive adhesive. In such cases, it is desirable to omit the lip to reduce costs and facilitate handling the cups.
  • the lip also is used in connection with the gas flushing to keep the package partially open for ingress and egress of gas and air. Therefore, it could not be omitted if the package is to be gas flushed.
  • a new type of lid is used which makes it possible to omit the lip.
  • the lid is bowed outwardly from the cup so as to define a kind of tunnel between itself and the cup.
  • the bowed lid is placed over the cup and maintained bowed outwardly during gas flushing. Then it is sealed to the cup.
  • FIG. 1 is a perspective view of a package being flushed with gas
  • FIG. 2 is a side elevation of a closed package
  • FIG. 3 is a vertical cross section of a closed package on larger scale than FIG. 2, some parts being shown in elevation.
  • the package comprises a cup I, having a bottom 2, sides 3 and a continuous flange 4 extending laterally from the upper edges of the sides and continuously around the cup.
  • the cup may be constructed of a transparent plastic such as polystyrene, polyvinyl chloride or the like. However, it also may be formed from other relatively stiff or rigid materials such as cardboard or aluminum foil.
  • the lid 5 is initially placed over the cup and rests on the flange on two sides.
  • metal foil 6 such as aluminum foil, which may be laminated to relatively stiff paper 7 and undercoated with heat sealing plastic 8.
  • a metal foil such as aluminum, having a thickness of 0.3 to 1.0 mil laminated to paper having a thickness of 4 to 10 mils is a preferred material because of the gas barrier properties of the metal foil and its ability to retain its shape if bowed. That is, once lids of this type are bowed they will stay bowed until pressed flat again. The same effect may be accomplished with plastic or paper lids by scoring them, for example along a series of parallel lines.
  • the term bowed is used to define the relationship between the lid and the opening into the cup. That is, any arrangement by which an inner portion of the lid is displaced generally outwardly from the opening of the cup while other portions of the lid are held to the cup will be satisfactory.
  • the exact shape of the lid will depend on. the shape of the opening into the cup.
  • a preferred type of cup is a hollow receptacle having a flat flange continuously around its rim. In such case the lid maybe arched outwardly in a simple curve as shown in FIG. 1.
  • other arrangements can be used for other types of receptacles and will be understood to be within the scope of the invention.
  • the bowed lid forms a kind of tunnel indicated at 9 over the package.
  • Gas flushing may be accomplished by approximately simultaneously applying suction and gas pressure at the opposite ends of the tunnel.
  • the gas and suction may be supplied by nozzles 10 and 11 directed laterally towards the ends of the tunnel 9 as shown, or, for example, in the apparatus described in the US. patent application of Grant E. Allen, Jr., et a1., Serial No. 498,896, filed October 21, 1965, now US. Pat. No. 3,334,- 602.
  • a strong vacuum is not required, because removal of air is accomplished principally by a sweeping action. That is, gas under pressure pushes air toward the opposite end of the package. As the gas pressure increases, it is possible to reduce the vacuum, and it is even possible to omit the suction entirely if there is sufficient gas pressure. However, this would waste gas and therefore is not preferred.
  • the tunnel formed by the lid greatly expedites gas flushing and reduces cost. That is, it provides a kind of flushing chamber to minimize escape of the gas to the surrounding atmosphere. It also guides or deflects the gas so that it moves toward the opposite end, forcing air ahead of it and expelling the air from the package.
  • the other gas is an inert gas such as carbon dioxide or nitrogen.
  • oxygen is desirable for preserving the freshness of certain products such as fresh meats and vegetables. It will be recognized that the present package may be used just as effectively for packaging with oxygen as with any other gas.
  • the package is closed by forming a gas-tight seal between the lid 5 and the flange 4.
  • This may be accomplished by heat sealing or adhesive.
  • heat sealing refers therefore to formation of a bond by application of heat.
  • Numerous procedures are known to the art including softening and rehardening of thermoplastic materials such as polyethylene, curing of heat activated adhesives and the like.
  • the method of sealing itself forms no part of the present invention, any suitable method for producing a connection between the lid and the cup by application of heat, preferably a gastight connection, being suitable.
  • the bowed lid provides another important advantage, i.e. in the appearance of the package. That is, when the edges of the lid are sealed to the cup, the pressure of the gas urges the lid outwardly, reducing the chance of wrin- 0 kling and giving the appearance of a full package. If the commodity packaged is not a liquid it may in fact fill the cup above its rim.
  • the invention provides other advandescribed and illustrated is intended, the invention having a scope as defined in the appended claims.
  • I claim: 1. A method of packaging sliced luncheon meat and other perishable goods with a gas other than air in a con- I tainer comprising a cup having a compartment surrounded by a sidewall, an outwardly extending flange on the upper rim thereof and a bottom, said method comprising the steps of placing said goods in said compartment, placing a closing lid on said flange over said goods, said lid being bowed outwardly so as to provide two openings on opposite sides of the cup between said lid and said rim whereby a tunnel is defined between said cup and said lid, introducing said other gas under pressure at one of said openings and into said tunnel while withdrawing air from said tunnel through said oppositely located opening, whereby said tunnel channels theflow of air and said other gas between said openings, and then forming a gas-tight seal between said lid and said flange to retain said other gas in said package.

Description

. Dec. 26,1967 H. B. MILLER METHOD OF PACKAGING MEAT Filed Dec. 27, 1965 INVENTOR flag/v0 B. M11154 J 4 4 004w ATTORNEYS United States Patent O 3,360,382 METHOD OF PACKAGING MEAT Harmon B. Miller, Atlanta, Ga., assignor to Scientific- Atlanta, Inc., Atlanta, Ga., a corporation of Georgia Filed Dec. 27, 1965, Ser. No. 516,295 3 Claims. (Cl. 99-174) This is a continuation-in-part of my previous application Serial No. 384,846 filed July 24, 1964.
The present invention is concerned with a package and a method of packaging and, more particularly with'packaging in containers of rigid, transparent or translucent plastic of products such as sliced luncheon meats and, other perishable goods, especially with gas flushing of the contents.
In the aforesaid patent application, there is described a package comprising a hollow receptacle or cup of rigid plastic material having a bottom, sides and a laterally extending sealingflange at the upper edges of the sides. An upright lip extends from at least a part and preferably all of the outer edge of the sealing flange. The package is closed by a lid which overlies the cup and the flange and has a tab which projects beyond the lip. The tab rests on the lip when the lid initially is placed on the cup so that the lid is propped up and permits withdrawing of air from the cup and replacing it with a gas. The connection between the tab and the rest of the lid is scored or otherwise constructed so that, when the package is closed by pressing the lid against the flange, the tab is bent out of the way to fit within the lip. Ordinarily, the lid is heat sealed to the cup. As will be appreciated, the lip also is useful to retain the lid in place after breaking the seal, so that the package may be opened and reclosed by the purchaser.
In many cases, the reclosable feature is not needed, or can be provided by a pressure-sensitive adhesive. In such cases, it is desirable to omit the lip to reduce costs and facilitate handling the cups. However, the lip also is used in connection with the gas flushing to keep the package partially open for ingress and egress of gas and air. Therefore, it could not be omitted if the package is to be gas flushed.
In accordance with the present invention, a new type of lid is used which makes it possible to omit the lip. Briefly stated, the lid is bowed outwardly from the cup so as to define a kind of tunnel between itself and the cup. The bowed lid is placed over the cup and maintained bowed outwardly during gas flushing. Then it is sealed to the cup.
The manner in which the invention is used will be understood better by considering the following description of its preferred embodiment and referring to the drawing in which:
FIG. 1 is a perspective view of a package being flushed with gas,
FIG. 2 is a side elevation of a closed package; and
FIG. 3 is a vertical cross section of a closed package on larger scale than FIG. 2, some parts being shown in elevation.
As seen in FIG. 3, the package comprises a cup I, having a bottom 2, sides 3 and a continuous flange 4 extending laterally from the upper edges of the sides and continuously around the cup. The cup may be constructed of a transparent plastic such as polystyrene, polyvinyl chloride or the like. However, it also may be formed from other relatively stiff or rigid materials such as cardboard or aluminum foil.
The lid 5 is initially placed over the cup and rests on the flange on two sides. In the form illustrated, it is made of metal foil 6, such as aluminum foil, which may be laminated to relatively stiff paper 7 and undercoated with heat sealing plastic 8. A metal foil such as aluminum, having a thickness of 0.3 to 1.0 mil laminated to paper having a thickness of 4 to 10 mils is a preferred material because of the gas barrier properties of the metal foil and its ability to retain its shape if bowed. That is, once lids of this type are bowed they will stay bowed until pressed flat again. The same effect may be accomplished with plastic or paper lids by scoring them, for example along a series of parallel lines.
The term bowed is used to define the relationship between the lid and the opening into the cup. That is, any arrangement by which an inner portion of the lid is displaced generally outwardly from the opening of the cup while other portions of the lid are held to the cup will be satisfactory. The exact shape of the lid will depend on. the shape of the opening into the cup. As can be seen from the drawing, a preferred type of cup is a hollow receptacle having a flat flange continuously around its rim. In such case the lid maybe arched outwardly in a simple curve as shown in FIG. 1. However, other arrangements can be used for other types of receptacles and will be understood to be within the scope of the invention.
In the embodiment illustrated in FIG. 1, it can be seen that the bowed lid forms a kind of tunnel indicated at 9 over the package. Gas flushing may be accomplished by approximately simultaneously applying suction and gas pressure at the opposite ends of the tunnel. The gas and suction may be supplied by nozzles 10 and 11 directed laterally towards the ends of the tunnel 9 as shown, or, for example, in the apparatus described in the US. patent application of Grant E. Allen, Jr., et a1., Serial No. 498,896, filed October 21, 1965, now US. Pat. No. 3,334,- 602.
A strong vacuum is not required, because removal of air is accomplished principally by a sweeping action. That is, gas under pressure pushes air toward the opposite end of the package. As the gas pressure increases, it is possible to reduce the vacuum, and it is even possible to omit the suction entirely if there is sufficient gas pressure. However, this would waste gas and therefore is not preferred.
The tunnel formed by the lid greatly expedites gas flushing and reduces cost. That is, it provides a kind of flushing chamber to minimize escape of the gas to the surrounding atmosphere. It also guides or deflects the gas so that it moves toward the opposite end, forcing air ahead of it and expelling the air from the package.
Ordinarily, the other gas is an inert gas such as carbon dioxide or nitrogen. However, it has been proposed that oxygen is desirable for preserving the freshness of certain products such as fresh meats and vegetables. It will be recognized that the present package may be used just as effectively for packaging with oxygen as with any other gas.
After gas flushing, the package is closed by forming a gas-tight seal between the lid 5 and the flange 4. This may be accomplished by heat sealing or adhesive. The term heat sealing refers therefore to formation of a bond by application of heat. Numerous procedures are known to the art including softening and rehardening of thermoplastic materials such as polyethylene, curing of heat activated adhesives and the like. However, the method of sealing itself forms no part of the present invention, any suitable method for producing a connection between the lid and the cup by application of heat, preferably a gastight connection, being suitable.
The bowed lid provides another important advantage, i.e. in the appearance of the package. That is, when the edges of the lid are sealed to the cup, the pressure of the gas urges the lid outwardly, reducing the chance of wrin- 0 kling and giving the appearance of a full package. If the commodity packaged is not a liquid it may in fact fill the cup above its rim. The invention provides other advandescribed and illustrated is intended, the invention having a scope as defined in the appended claims.
I claim: 1. A method of packaging sliced luncheon meat and other perishable goods with a gas other than air in a con- I tainer comprising a cup having a compartment surrounded by a sidewall, an outwardly extending flange on the upper rim thereof and a bottom, said method comprising the steps of placing said goods in said compartment, placing a closing lid on said flange over said goods, said lid being bowed outwardly so as to provide two openings on opposite sides of the cup between said lid and said rim whereby a tunnel is defined between said cup and said lid, introducing said other gas under pressure at one of said openings and into said tunnel while withdrawing air from said tunnel through said oppositely located opening, whereby said tunnel channels theflow of air and said other gas between said openings, and then forming a gas-tight seal between said lid and said flange to retain said other gas in said package.
2. A method as set forth in claim 1 wherein said gas is oxygen and said goods are fresh meat.
3. A method as set forth in claim 1 wherein said gas is oxygen.
References Cited UNITED STATES PATENTS '8/1 935 Young 99189 X 2,054,492 9/1936 Young 5322 2,412,167 12/1946 Minaker 5312 2,623,826 12/1952 Grinstead 99-174 2,763,107 9/1956 Day et a1. 53-7 2,870,954 1/1959 Kulesza 99174 X 3,012,894 12/1961 Nagel 99-174 X 3,117,873 1/1964 Bartels et al. 99171 FOREIGN PATENTS 148,690 10/ 1952 Australia.
HYMAN LORD. Primary Examiner.

Claims (1)

1. A METHOD OF PACKAGING SLICED LUNCHEON MEAT AND OTHER PERISHABLE GOODS WITH A GAS OTHER THAN AIR IN A CONTAINER COMPRISING A CUP HAVING A COMPARTMENT, PLACING A CLOSING LID ON SAID FLANGE OVER SAID GOOD, SAID LED BEING BOWED OUTWARDLY SO AS TO PROVIDE TWO OPENDINGS ON OPPOSITE SIDES OF THE CUP BETWEEN SAID LID AND SAID RIM WEREBY A TUNNEL IS DEFINED BETWEEN SAID CUP AND SAID LID, INTRODUCING SAID OTHER GAS UNDER PRESSURE AT ONE OF SAID OPENINGS AND INTO SAID TUNNEL WHILE WITHDRAWING AIR FROM SAID TUNNEL THROUGH SAID OPPOSITELY LOCATED OPENING, WHEREBY SAID TUNNEL CHANNELS THE FLOW OF AIR AND SAID OTHER GAS
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Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773527A (en) * 1970-07-30 1973-11-20 Shapoff L Method of preserving cooked potatoes
US3831341A (en) * 1971-04-03 1974-08-27 J Gauntlett Method for filling containers
US3976795A (en) * 1971-12-25 1976-08-24 Nissin Shokuhin Kaisha, Ltd. Food self-contained in a cooking container and process for making the same
US4066401A (en) * 1975-05-05 1978-01-03 Arie Solomon Long term storage apparatus
US4309816A (en) * 1978-09-12 1982-01-12 Matsushita Electric Works, Ltd. Method of manufacturing gas-charged electric switches
DE3113445A1 (en) * 1981-04-03 1982-10-21 Messer Griesheim Gmbh, 6000 Frankfurt "METHOD FOR PACKING FOODS UNDER PROTECTIVE GAS IN PLASTIC CUP WITH FLEXIBLE LID"
US4409252A (en) * 1982-04-12 1983-10-11 Messer Griesheim Gmbh Procedure for packaging of food under protective gas in synthetic containers with flexible tops
US4472924A (en) * 1981-08-01 1984-09-25 Robert Bosch Gmbh Apparatus for gas-treatment and closure of packaging containers
US4627336A (en) * 1985-09-25 1986-12-09 Nam Kang H Apparauts for storage of perishables
US4683139A (en) * 1985-07-11 1987-07-28 Wilson Foods Corporation Process for prepacking fresh meat
US4791775A (en) * 1987-04-22 1988-12-20 Raque Food Systems, Inc. Packaging device
US4807424A (en) * 1988-03-02 1989-02-28 Raque Food Systems, Inc. Packaging device and method
US4886690A (en) * 1987-12-21 1989-12-12 W. R. Grace & Co. Peelable barrier film for vacuum skin packages and the like
US4889731A (en) * 1988-02-12 1989-12-26 W. R. Grace & Co.-Conn. Package having peelable film
US4901505A (en) * 1988-02-12 1990-02-20 W. R. Grace & Co.-Conn. Method of making a package having peelable film
WO1990002687A1 (en) * 1988-09-14 1990-03-22 Kal Kan Foods, Inc. Method of filling and sealing a deformable container
US4919955A (en) * 1987-09-08 1990-04-24 Mitchell Jerry L Method for packaging perishable products
US4946326A (en) * 1988-06-07 1990-08-07 American Air Liquide Method for preservation of fresh fish or sea-food
US5108656A (en) * 1988-06-07 1992-04-28 American Air Liquide Method for preservation of fresh fish or sea-food
US5109956A (en) * 1989-05-26 1992-05-05 Nunzio's Pizza, Inc. Food preparation and delivery apparatus and method
US5428943A (en) * 1988-09-14 1995-07-04 Kal Kan Foods, Inc. Method of filling and sealing a deformable container
US5520941A (en) * 1990-08-10 1996-05-28 Veroost Bedrijfsontwikkeling B.V. Method for conditioned storage and sale of perishable foodstuffs
US5631036A (en) * 1993-12-07 1997-05-20 W.R. Grace & Co.-Conn. Peelable vacuum skin package with barrier foam tray
US5686126A (en) * 1995-06-06 1997-11-11 W. R. Grace & Co.-Conn. Dual web package having improved gaseous exchange
US5686127A (en) * 1995-06-06 1997-11-11 W. R. Grace & Co.-Conn. Dual web package having improved gaseous exchange
US5779050A (en) * 1997-03-11 1998-07-14 W. R. Grace & Co.-Conn. Lidded package having a tab to facilitate peeling
US5779832A (en) * 1996-11-25 1998-07-14 W. R. Grace & Co.-Conn. Method and apparatus for making a peelable film
US5885640A (en) * 1996-06-17 1999-03-23 Nestec S.A. Method and apparatus for introducing aroma into food package and food package containing said aroma
US5909231A (en) * 1995-10-30 1999-06-01 Hewlett-Packard Co. Gas flush to eliminate residual bubbles
US5916613A (en) * 1994-06-30 1999-06-29 Cryovac, Inc. Barrier package for fresh meat products
US5916615A (en) * 1997-06-18 1999-06-29 W. R. Grace & Co.-Conn. Case-ready packages having smooth, gas-permeable substrates on the bottoms thereof to reduce or prevent discoloration when placed in a stack
US5919547A (en) * 1995-06-06 1999-07-06 Cryovac, Inc. Laminate having a coextruded, multilayer film which delaminates and package made therefrom
US5989613A (en) * 1997-01-13 1999-11-23 Freshpak, Inc. Gas packaging method for perishable food products
US6015583A (en) * 1996-06-28 2000-01-18 Cryovac, Inc. Dual web package having labeling means
US6018932A (en) * 1998-01-07 2000-02-01 Premark Feg L.L.C. Gas exchange apparatus
US6032800A (en) * 1998-05-14 2000-03-07 Cryovac, Inc. Laminate and package made therefrom
US6061998A (en) * 1993-09-07 2000-05-16 World Class Packaging Systems, Inc. Method of packaging meat products
US6248380B1 (en) 1995-06-06 2001-06-19 Cryovac, Inc. Package having a dual-film lid comprising a gas-impermeable film and a delaminatable, gas-permeable film
US6319527B1 (en) * 1999-10-26 2001-11-20 Distinctive Brands, Inc. Method of preparing a uniformly tender meat product
EP1171365A1 (en) * 1998-10-29 2002-01-16 Edward Armando Colombo Modified atmosphere package
US6481185B1 (en) 1997-01-13 2002-11-19 Raymond G. Buchko System for modifying the atmosphere within the interior of a package
US6670023B2 (en) 1997-12-02 2003-12-30 Cryovac, Inc. Laminate for case-ready packaging including a gas-impermeable film capable of delaminating into a gas-permeable portion and a gas-impermeable portion, and a gas-permeable film bonded thereto
US20040163973A1 (en) * 2001-07-12 2004-08-26 Eugenio Longo Self-absorbing gas-barrier receptacle for food packaging and food package obtained therefrom
US20060255055A1 (en) * 2005-05-16 2006-11-16 Barry Mulder Container and method for forming a container
US20090035425A1 (en) * 2005-06-28 2009-02-05 Johannes Patrick Husken Method and Device for Subjecting a Food Product To a Heat Treatment
US20100263329A1 (en) * 2009-04-14 2010-10-21 James Nash Filling and sealing of beverage containers
US20110020505A1 (en) * 2007-08-21 2011-01-27 Lion Rock Holdings, Llc Package for molded food product
US11192703B2 (en) * 2013-10-17 2021-12-07 Azionaria Construzioni Macchine Automatiche A.C.M.A. S.P.A. Machine and method for packaging single-use capsules or pods
US11325731B2 (en) * 2017-02-28 2022-05-10 Azionaria Construzioni Macchine Automatiche A.C.M.A. S.P.A. Method and apparatus for wrapping hygroscopic food products

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Cited By (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773527A (en) * 1970-07-30 1973-11-20 Shapoff L Method of preserving cooked potatoes
US3831341A (en) * 1971-04-03 1974-08-27 J Gauntlett Method for filling containers
US3976795A (en) * 1971-12-25 1976-08-24 Nissin Shokuhin Kaisha, Ltd. Food self-contained in a cooking container and process for making the same
US4066401A (en) * 1975-05-05 1978-01-03 Arie Solomon Long term storage apparatus
US4309816A (en) * 1978-09-12 1982-01-12 Matsushita Electric Works, Ltd. Method of manufacturing gas-charged electric switches
DE3113445A1 (en) * 1981-04-03 1982-10-21 Messer Griesheim Gmbh, 6000 Frankfurt "METHOD FOR PACKING FOODS UNDER PROTECTIVE GAS IN PLASTIC CUP WITH FLEXIBLE LID"
EP0063235A2 (en) * 1981-04-03 1982-10-27 Messer Griesheim Gmbh Method of packaging food products within an inert gas atmosphere in plastics cups with flexible covers
EP0063235A3 (en) * 1981-04-03 1983-05-04 Messer Griesheim Gmbh Method of packaging food products within an inert gas atmosphere in plastics cups with flexible covers
US4472924A (en) * 1981-08-01 1984-09-25 Robert Bosch Gmbh Apparatus for gas-treatment and closure of packaging containers
US4409252A (en) * 1982-04-12 1983-10-11 Messer Griesheim Gmbh Procedure for packaging of food under protective gas in synthetic containers with flexible tops
US4818548A (en) * 1985-07-11 1989-04-04 Wilson Foods Corporation Method of treating fresh meat cuts
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