EP0698563B1 - Peelable package with oxygen scavenging layer - Google Patents

Peelable package with oxygen scavenging layer Download PDF

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Publication number
EP0698563B1
EP0698563B1 EP95305625A EP95305625A EP0698563B1 EP 0698563 B1 EP0698563 B1 EP 0698563B1 EP 95305625 A EP95305625 A EP 95305625A EP 95305625 A EP95305625 A EP 95305625A EP 0698563 B1 EP0698563 B1 EP 0698563B1
Authority
EP
European Patent Office
Prior art keywords
barrier layer
oxygen
package
layer
peelable
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
EP95305625A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0698563A1 (en
Inventor
James Akers Mize, Jr.
Henry Walker Stockley, Iii
Robin Hill Logan
Nathanael Rustia Miranda
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.)
Cryovac LLC
Original Assignee
Cryovac LLC
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 Cryovac LLC filed Critical Cryovac LLC
Publication of EP0698563A1 publication Critical patent/EP0698563A1/en
Application granted granted Critical
Publication of EP0698563B1 publication Critical patent/EP0698563B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/266—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants
    • B65D81/268—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants the absorber being enclosed in a small pack, e.g. bag, included in the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
    • B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure
    • B65D77/2048—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut
    • B65D77/2056—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut the cover being weakened
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/266—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants
    • B65D81/267—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants the absorber being in sheet form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2075—Lines of weakness or apertures
    • B65D2577/2091—Lines of weakness or apertures in cover

Definitions

  • the invention relates to packages for products such as fresh red meat products and, specifically, to to a peelable barrier package having an oxygen scavenging layer.
  • the package includes an inner oxygen-permeable member which may be gas flushed or evacuated.
  • the package preserves the freshness of the meat until the meat is ready to be marketed to the consumer.
  • the outer wrapper is removed and the inner package is displayed to the consumer.
  • the inner wrapper admits oxygen to the interior of the package causing the fresh meat product to change to a bright red color which the consumer associates with freshness.
  • the inner pouch of the Weinke package may consist of polyethylene film and the outer pouch may be cellophane film with a coating of saran (vinylidene chloride copolymer.)
  • saran vinylene chloride copolymer
  • the material disclosed in Grindrod et al. is a laminate of PVC/Saran and EVA/Saran.
  • EVA designates ethylene/vinylacetate copolymer
  • PVC designates polyvinyl-chloride.
  • the EVA and PVC layers are the inner layers and at the periphery of the package they are sealed together.
  • the saran layers can be readily peeled from the respective EVA or PVC layers with gripping tabs that are provided.
  • the outer barrier layer typically still allows permeation of small amounts of oxygen which may shorten the shelf life of the package. This is particularly true of packages having an ethylene vinyl alcohol copolymer (EVOH) barrier layer which can lose some of its oxygen barrier properties when subjected to very high moisture conditions.
  • EVOH ethylene vinyl alcohol copolymer
  • an oxygen scavenger layer which serves both to scavenge oxygen trapped in the interior of the package during packaging and which also serves to enhance the effectiveness of the barrier layer by trapping or capturing oxygen which permeates the barrier layer so as to provide an "active" barrier to oxygen.
  • oxygen scavenger materials in permanent or non-peelable layers of packaging is known. See, for example, European Patent Application No. EP 507207 A2.
  • the transparency of the oxygen scavenger layer is often important because it remains in place during display to the consumer.
  • the peelable barrier layer and the scavenging means may be substantially impervious to oxygen.
  • the non-barrier layer which is substantially pervious to oxygen is exposed.
  • the invention relates to a peelable barrier package for oxygen sensitive products such as fresh red meats.
  • a package in accordance with the invention is generally indicated by reference numeral 10.
  • package 10 includes an oxygen scavenger component which improves the characteristics of the package.
  • oxygen scavenger refers to a composition, layer, article, coating, sachet, or the like which consumes, reacts with, depletes or reduces the amount of oxygen in a given environment.
  • Package 10 includes a bottom web or support member 12 for supporting a product 14, an oxygen permeable non-barrier layer 16 enclosing product 14 on bottom web 12 and sealed thereto, an oxygen impermeable, peelable barrier layer 18 disposed over non-barrier layer 16, and an oxygen scavenger member or layer 20 disposed between non-barrier layer 16 and barrier layer 18.
  • Package 10 also preferably includes a member such as pull tab 22 for use in initiating peel of barrier layer 18 and preferably of oxygen scavenger layer 20 from package 10.
  • Figs. 2 and 3 illustrate an enlarged portion corresponding to the circled section of Fig. 1 to more clearly illustrate the invention.
  • oxygen scavenger layer 20 serves to scavenge oxygen from within package 10, and also to enhance the barrier nature of barrier layer 18 by trapping or scavenging oxygen which permeates barrier layer 18 from outside the package. In this manner, product 14 has enhanced shelf life due to increased protection from oxygen. Furthermore, because oxygen scavenger layer 20 would in use typically be removed prior to display to the consumer, the appearance of oxygen scavenger layer 20 is sometimes of less importance.
  • tab 22 or any other suitable mechanism can be used to peel and remove barrier layer 18 and scavenger layer 20 so that oxygen is allowed to permeate non-barrier layer 16 and oxygenate product 14 so as to provide product 14 with a bright red "bloom" (in the case where the product is fresh red meat) which the consumer associates with freshness.
  • non-barrier layer 16 is substantially pervious to oxygen and preferably allows an oxygen transmission of at least about 2000, and more preferably at least about 5000, cc O 2 per square meter over a 24 hour period at 23°C at one atmosphere. Such an oxygen transmission rate allows a rapid "bloom" of a fresh red meat product so that barrier layer 18 need be removed only a short time prior to placement of the package on display for the consumer.
  • suitable materials include polyvinyl-chloride (PVC), ethylene/vinylacetate copolymers (EVA), ethylene butyl acrylate copolymer (EBA), and polyolefins such as polyethylene. Those skilled in the art will understand that other suitable materials are available for layer 16.
  • Barrier layer 18 preferably allows an oxygen transmission of less than or equal to about 1000, more preferably less than or equal to about 500, and most preferably less than about 100,cc O 2 per square meter over a 24 hour period at 23°C at one atmosphere. Barrier layer 18 thereby serves to inhibit oxygen transmission so as to extend shelf life of product 14 in package 10. Barrier layer 18 also serves, as will be further described below, to limit the contact of oxygen from the surrounding atmosphere with oxygen scavenger layer 20 so that the scavenging capacity of oxygen scavenger layer 20 is not prematurely or rapidly exhausted by oxygen from outside the package.
  • barrier layer 18 Numerous materials are known for providing desired oxygen barrier characteristics of barrier layer 18. Examples of suitable materials include but are not limited to ethylene/vinyl alcohol copolymer (EVOH), silica (SiO 2 ) coating, amorphous nylon, polyester, liquid crystalline polymer, and saran (vinylidine chloride copolymer or PVDC).
  • EVOH ethylene/vinyl alcohol copolymer
  • SiO 2 silica
  • amorphous nylon amorphous nylon
  • polyester liquid crystalline polymer
  • saran vinylidine chloride copolymer or PVDC
  • the optimal combination of oxygen transmission of both the barrier layer 18 and non-barrier layer 16 will depend on a variety of factors, including the nature of product 14, the packaging and storage temperatures, thickness of the respective layers, desired shelf life, etc.
  • Oxygen scavenger layer 20 serves to scavenge oxygen which may remain inside package 10 after packaging, and also serves to capture oxygen which may permeate barrier layer 18.
  • oxygen scavenger layer 20 and barrier layer 18 serve to provide an active barrier which is substantially impervious to oxygen.
  • Numerous oxygen scavenging materials are known in the art.
  • ethylenically unsaturated hydrocarbon resins have an excellent capacity for reaction with oxygen.
  • the ethylenically unsaturated hydrocarbon may be substituted or unsubstituted.
  • An unsubstituted ethylenically unsaturated hydrocarbon has at least one aliphatic carbon-carbon double bond and comprises 100% by weight carbon and hydrogen.
  • unsubstituted ethylenically unsaturated hydrocarbons include, but are not limited to, diene polymers such as polyisoprene, (e.g., transpolyisoprene), polybutadiene (especially 1,2-polybutadienes, which are defined as those polybutadienes possessing greater than or equal to 50% 1,2 microstructure), and copolymers thereof, e.g. styrene-butadiene.
  • diene polymers such as polyisoprene, (e.g., transpolyisoprene), polybutadiene (especially 1,2-polybutadienes, which are defined as those polybutadienes possessing greater than or equal to 50% 1,2 microstructure), and copolymers thereof, e.g. styrene-butadiene.
  • Such hydrocarbons also include polymeric compounds such as polypentenamer, polyoctenamer, and other polymers prepared by olefin metathesis; diene oligomers such as squalene; and polymers or copolymers derived from dicyclopentadiene, norbornadiene, 5-ethylidene-2-norbornene, or other monomers containing more than one carbon-carbon double bond (conjugated or non-conjugated). These hydrocarbons further include carotenoids such as ⁇ -carotene.
  • a substituted ethylenically unsaturated hydrocarbon as used herein is one which has at least one aliphatic carboncarbon double bond and comprises about 50% - 99% by weight carbon and hydrogen.
  • Preferred substituted ethylenically unsaturated hydrocarbons include, but are not limited to, those with oxygen-containing moieties, such as esters, carboxylic acids, aldehydes, ethers, ketones, alcohols, peroxides, and/or hydroperoxides.
  • oxygen-containing moieties such as esters, carboxylic acids, aldehydes, ethers, ketones, alcohols, peroxides, and/or hydroperoxides.
  • Specific examples of such hydrocarbons include, but are not limited to, condensation polymers such as polyesters derived from monomers containing carbon-carbon double bonds; unsaturated fatty acids such as oleic, ricinoleic, dehydrated ricinoleic, and linoleic acids and derivatives thereof, e.g. esters.
  • Such hydrocarbons also include polymers or copolymers derived from (meth)allyl (meth)acrylates.
  • scavenger layer 20 may also comprise a mixture of any number of the foregoing materials.
  • the ethylenically unsaturated hydrocarbon preferably has two or more ethylenically unsaturated groups per molecule, and more preferably is a polymeric compound having three or more ethylenically unsaturated groups and an average molecular weight of at least about 1000.
  • oxygen scavenger layer 20 may preferably include a catalyst to accelerate the scavenging rate of the oxygen scavenging material.
  • Transition metal catalysts are preferred, preferably in the form of a transition metal salt.
  • Suitable transition metals include but are not limited to metals selected from the first, second or third transition series of the Periodic Table such as, for example, manganese II or III, iron II or III, cobalt II or III, nickel II or III, copper I or II, rhodium II, III or IV, and ruthenium.
  • the metal is further preferably iron, nickel or copper, more preferably manganese and most preferably cobalt.
  • Suitable counterions of the metal salt include but are not limited to chloride, acetate, stearate, palmitate, 2-ethylhexanoate, neodecanoate or naphthenate.
  • Particularly preferable salts include cobalt (II) 2-ethylhexanoate and cobalt II neodecanoate.
  • the catalyst When incorporated into scavenger layer 20, the catalyst accelerates scavenging of oxygen so as to render scavenger layer 20 more effective.
  • Support member 12 may be any suitable tray (e.g. foamed polystyrene tray) or bottom material on which product 14 rests.
  • tray e.g. foamed polystyrene tray
  • support member 12 should be made from a barrier material or contain a layer, film, laminate, coating or the like of an oxygen-or gas-barrier material.
  • package 10 is peelable in that barrier layer 18 is peelable or removable from the package to provide bloom when desired.
  • Oxygen scavenger layer 20 is preferably also removed along with barrier layer 18.
  • oxygen scavenger layer 20 and barrier layer 18 can together comprise a composite or multi-layer film or laminate so that they are peeled together.
  • oxygen scavenger layer 20 could be provided in the form of a packet or sachet positioned between non-barrier layer 16 and barrier layer 18 so that removal of peelable barrier layer 18 allows the packet to be removed as well.
  • the oxygen scavenger can be provided as a coating on the interior (i.e. towards the product) surface of barrier layer 18.
  • the oxygen scavenger can also comprise a sachet or packet 20a (see Fig. 6).
  • a single film 16 comprising an oxygen permeable material can be sealed to an inner flange 30 of tray 12, and a second, barrier/scavenging film can be sealed to an outer flange 32 of the same tray 12.
  • barrier layer 18 can be monolayer or multilayer construction.
  • Barrier layer 18 can be directly adhered to oxygen scavenging layer 20, or indirectly adhered by one or more adhesive or other layers.
  • the drawings generally show monolayer construction for purposes of clarity.
  • Figures 2 and 3 show a barrier layer 18 which actually includes three layers, 15, 17, and 19, any one or more of which comprise the oxygen barrier materials referred to herein.
  • Tab 22 as shown in the drawings is one way of initiating the peel. It is also known to perforate or score an edge of package 10 and provide a pull tab for peeling both layers 16, 18. Such a configuration is illustrated in Fig. 5. Perforations shown at 28 cause the rupture of non-barrier layer 16 and allow barrier layer 18 and oxygen scavenger layer 20 to be peeled as shown while the remainder of non-barrier layer 16 is left in place on package 10 and still enclosing product 14. In accordance with the invention, numerous other mechanisms may of course be utilized to provide peeling of barrier layer 18.
  • Scavenger layer 20 may be attached or adhered to barrier layer 18 and thereby peels simultaneously therewith, or may be removed separately after peeling of barrier layer 18.
  • non-barrier layer 16 and barrier layer 18 can be carried out in accordance with any of numerous conventional processes such as stretch wrapping, heat shrinking, vacuum skin or differential pressure, or any other suitable procedure. In some of these procedures, such as stretch wrapping, some oxygen may remain in an inner space 24 of package 10 (Fig. 1). In this instance, oxygen scavenger layer 20 serves both to supplement the oxygen barrier characteristics of barrier layer 18 and also to remove the remaining oxygen.
  • the non-barrier layer 16 is provided with perforations 26 (Fig. 3) for increasing oxygen transmission or permeability of non-barrier layer 16. Perforations 26 serve to increase the access of scavenger layer 20 to gases in inner space 24 and thereby help to provide a rapid scavenging of remaining oxygen from inner space 24.
  • non-barrier layer 16 can be applied together with barrier layer 18 and scavenger layer 20, or may be applied first, before application of barrier layer 18 and scavenger layer 20.
  • non-barrier layer 16 may be applied in the same or a different manner than barrier layer 18.
  • non-barrier layer 16 may be a vacuum skin wrap with barrier layer 18 stretch wrapped over non-barrier layer 16.
  • both layers 16, 18 are applied under vacuum conditions (i.e., as skin wraps, see Fig. 4), it is less likely that space 24 will contain oxygen, and inner space 24 may not be formed at all. In such packages, the primary function of oxygen scavenger layer 20 is to enhance and supplement the barrier nature of barrier layer 18.
  • a package containing a peelable oxygen barrier layer and an oxygen scavenger layer whereby the package has enhanced shelf life.
  • the oxygen scavenger layer advantageously serves to render the barrier layer more effective and thereby create an "active" oxygen barrier.
  • the oxygen scavenger also serves to remove oxygen from within the package, which is necessary to preserve a deoxymyoglobin color of fresh meat, so that the meat will adequately oxygenate to oxymyoglobin color upon removal of the barrier layer.
  • the peelable nature of the package allows removal of the barrier layer and oxygen scavenger so that the remaining non-barrier layer allows oxygen to permeate and "bloom" the product contained in the package.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
EP95305625A 1994-08-23 1995-08-11 Peelable package with oxygen scavenging layer Expired - Lifetime EP0698563B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29517794A 1994-08-23 1994-08-23
US295177 1994-08-23

Publications (2)

Publication Number Publication Date
EP0698563A1 EP0698563A1 (en) 1996-02-28
EP0698563B1 true EP0698563B1 (en) 2000-03-08

Family

ID=23136567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95305625A Expired - Lifetime EP0698563B1 (en) 1994-08-23 1995-08-11 Peelable package with oxygen scavenging layer

Country Status (12)

Country Link
EP (1) EP0698563B1 (pt)
JP (1) JPH0858850A (pt)
AT (1) ATE190288T1 (pt)
AU (1) AU698070B2 (pt)
BR (1) BR9503757A (pt)
CA (1) CA2156039C (pt)
DE (1) DE69515397T2 (pt)
DK (1) DK0698563T3 (pt)
ES (1) ES2143593T3 (pt)
NZ (1) NZ272738A (pt)
PT (1) PT698563E (pt)
ZA (1) ZA956729B (pt)

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NZ264453A (en) 1994-09-14 1998-06-26 Meat Research Corp Package wherein the production of carbon dioxide is independent of the removal of oxygen
US5686126A (en) 1995-06-06 1997-11-11 W. R. Grace & Co.-Conn. Dual web package having improved gaseous exchange
US5919547A (en) * 1995-06-06 1999-07-06 Cryovac, Inc. Laminate having a coextruded, multilayer film which delaminates and package made therefrom
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
CA2247640C (en) * 1996-03-07 2003-11-11 Cryovac, Inc. Functional barrier in oxygen scavenging film
US6083585A (en) * 1996-09-23 2000-07-04 Bp Amoco Corporation Oxygen scavenging condensation copolymers for bottles and packaging articles
US5779832A (en) * 1996-11-25 1998-07-14 W. R. Grace & Co.-Conn. Method and apparatus for making a peelable film
AU5361698A (en) * 1996-11-25 1998-06-22 W.R. Grace & Co.-Conn. Package having a multiple-film lid comprising a gas-impermeable film peelably adhered to a gas-permeable film
US5779050A (en) * 1997-03-11 1998-07-14 W. R. Grace & Co.-Conn. Lidded package having a tab to facilitate peeling
US6686006B1 (en) 1997-05-16 2004-02-03 Cyrovac, Inc. Amorphous silica in packaging film
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
WO1999012829A1 (en) * 1997-09-09 1999-03-18 Peterson Scanproof Aktiebolag Packaging material
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
US6032800A (en) * 1998-05-14 2000-03-07 Cryovac, Inc. Laminate and package made therefrom
KR100845014B1 (ko) * 2001-09-11 2008-07-08 에스테 가가꾸 가부시끼 가이샤 피복박리형 제습제
EP1867579B1 (en) * 2001-11-01 2010-01-13 Idemitsu Unitech Co., Ltd. Atmosphere improving zipper tape
DE20211075U1 (de) * 2002-07-22 2003-12-11 Rpc Bramlage Gmbh Behälterförmige Verpackungen
EP1674407B1 (fr) * 2004-12-22 2014-06-25 Nestec S.A. Récipient alimentaire et procédé de chauffage pour le ledit récipient
ITAN20130158A1 (it) * 2013-08-27 2015-02-28 Domus Care Societa A Responsabilit A Limitata Contenitore per prodotti deperibili.

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US3681092A (en) 1968-10-25 1972-08-01 Dow Chemical Co Fresh meat packaging
US3574642A (en) 1969-05-15 1971-04-13 American Can Co Package for and method of packaging meats
US3713849A (en) 1970-04-15 1973-01-30 Mayer & Co Inc O Meat package
US4055672A (en) * 1972-04-10 1977-10-25 Standard Packaging Corporation Controlled atmosphere package
JP2926724B2 (ja) * 1988-11-09 1999-07-28 三菱瓦斯化学株式会社 酸素吸収体収納袋及びその切断方法
CA2062083C (en) 1991-04-02 2002-03-26 Drew Ve Speer Compositions, articles and methods for scavenging oxygen
IL100022A0 (en) * 1991-11-11 1992-08-18 Shirat Ltd Aluminum with controlled oxidation

Also Published As

Publication number Publication date
JPH0858850A (ja) 1996-03-05
BR9503757A (pt) 1996-04-16
PT698563E (pt) 2000-08-31
CA2156039A1 (en) 1996-02-24
DK0698563T3 (da) 2000-06-05
DE69515397T2 (de) 2000-07-27
NZ272738A (en) 1998-01-26
EP0698563A1 (en) 1996-02-28
AU698070B2 (en) 1998-10-22
AU2845295A (en) 1996-03-07
CA2156039C (en) 2000-10-24
ATE190288T1 (de) 2000-03-15
DE69515397D1 (de) 2000-04-13
ZA956729B (en) 1996-03-28
ES2143593T3 (es) 2000-05-16

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