WO2006011842A1 - Materiau d'emballage permeable - Google Patents

Materiau d'emballage permeable Download PDF

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Publication number
WO2006011842A1
WO2006011842A1 PCT/SE2005/001167 SE2005001167W WO2006011842A1 WO 2006011842 A1 WO2006011842 A1 WO 2006011842A1 SE 2005001167 W SE2005001167 W SE 2005001167W WO 2006011842 A1 WO2006011842 A1 WO 2006011842A1
Authority
WO
WIPO (PCT)
Prior art keywords
material component
microns
layer
packaging
packing
Prior art date
Application number
PCT/SE2005/001167
Other languages
English (en)
Inventor
Karl Nideborn
Mattias Bragwad
Per-Axel Olsson
Original Assignee
Amcor Flexibles Europe A/S
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 Amcor Flexibles Europe A/S filed Critical Amcor Flexibles Europe A/S
Priority to EP05759031A priority Critical patent/EP1771301A4/fr
Publication of WO2006011842A1 publication Critical patent/WO2006011842A1/fr
Priority to NO20070846A priority patent/NO20070846L/no

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/738—Thermoformability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • 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

Definitions

  • the present invention relates to a packaging material, and especially to a rigid permeable packaging material for perishables having a microbiological activity, and a package and a method for packaging perishables.
  • Some natural processes have to be slowed down in order not to deteriorate the quality of the packed perishables or the appearance of the package. For example, it is desirable to avoid oxidation, which could occur by a too large amount of oxygen coming into contact with the packed perishables.
  • Certain foods continue to release gases even after packaging. For example, an unriped cheese releases carbon dioxide gas, CO 2 , during the process of ripeness.
  • the release of carbon dioxide gas can be a drawback, especially if the package has a low permeability for carbon dioxide gas, since the gas will build up in the package and forming a package having a balloon-like shape. For many customers, perishables stored in such a ballooned package would not be attractive to buy.
  • Flexible packaging materials for packing of cheese are known on the market and are commonly used for vacuum packaging. These flexible materials are low barrier material, often laminates, and are usually built up of a polyamide, PA, and polyethylene, PE, combination, or other polymers having a low E-modulus which make them unfeasible for rigid packages. Further, it is not sufficient to increase the thickness of the laminates to obtain a rigid package. Furthermore, these flexible materials usually have a carbon dioxide permeability that is larger than the oxygen permeability. For example, the oxygen permeability is approximately 30 - 50 cc/mf-day-atmosphere and the carbon dioxide permeability is approximately 100 - 200 cc/m 2 -day-atmosphere.
  • the US patent US 6,746,762 discloses a film selectively permeable to carbon dioxide gas and a food packing film comprising the same.
  • the film consists of a laminate film including at least three layers composed of an outer layer, an intermediate layer and an inner layer, in which the outer layer and the inner layer include a thermoplastic resin and the intermediate layer includes a film made of chitosan.
  • Chitosan is a material providing a barrier in between the low and medium barriers as they are defined below.
  • the selectively permeable film provides a ratio of the carbon dioxide gas transmission, CO 2 TR, to the oxygen gas transmission, O 2 TR 5 CO 2 TR/O 2 TR, of 15 or higher.
  • a drawback with the film disclosed by US 6,746,762 is that the carbon dioxide gas barrier and the oxygen gas barrier cannot be controlled independently of each other.
  • the transmission of carbon dioxide gas through the film would for example be too large if a sufficient oxygen gas barrier is provided.
  • the pH will increase and the bacterial growth will be promoted.
  • the oxygen gas barrier would have to be less.
  • a smaller oxygen gas barrier would lead to the risk of the packed perishables going mouldy since the transmission of the oxygen gas through the packaging film would be too high.
  • the US patent 5,763,095 discloses a packaging film for packaging oxygen sensitive products which emit carbon dioxide gas, such as a high gassing cheese.
  • the packaging film is a multilayer film having a CO 2 :O 2 transmission rate higher than 3.0; and has a CO 2 transmission rate of at least 400 cc/m 2 -day-atmosphere.
  • a drawback with the film disclosed by US 5,763,095 is that the packaging film is flexible and that it is impossible to manufacture rigid packages of the film without increasing the thickness of the package. Since an increased thickness will affect the carbon dioxide gas barrier and the oxygen gas barrier, the favourable barrier properties of the flexible material will be dramatically changed, either to be too high or too low, i.e. to provide a too low permeability or a too high permeability. Therefore, if the packaging film of US 5,763,095 was made rigid it would not be suitable for packaging oxygen sensitive products which emit carbon dioxide gas, since the gas barrier would be changed.
  • perishables e.g. cheese
  • the packed food is a cheese
  • Such a package would have the advantage that younger, i.e. immature, cheeses can be packed, transported and delivered to stores.
  • packaging cheese several problems have to be solved. For example, young cheeses have, especially at summer time, a high production of carbon dioxide gas.
  • the emission of carbon dioxide gas can often exceed 3 — 5 cm 3 per day.
  • the emission of carbon dioxide gas from the cheese depends on several factors, such as the cheese type, season, storage time and temperature after packaging, and if the cheese is sliced, also the storage time before slicing.
  • the emission of carbon dioxide gas depends also on the maturity of the cheese, since a younger, more immature cheese has a larger emission of carbon dioxide gas than an older more mature cheese.
  • An object of the present invention is to provide a rigid packaging material feasible for packing of perishables having a microbiological activity without negatively affect the quality of the perishables or the appearance of the package and a packaging method feasible for packing perishables.
  • An aim of the object is to provide a packaging material having a chosen carbon dioxide and oxygen gas barrier, which barriers can be chosen independently of the thickness of the package material or package.
  • Another aim is to avoid ballooning of the package.
  • Yet another aim is to avoid collapsing of the package, which will occur if the carbon dioxide barrier is too low.
  • a further aim is to avoid a too large amount of oxygen gas in the package, and thereby preventing the packed perishables from going mouldy.
  • Another aim is to provide a package that is transparent and thermo formable. Yet another aim is to provide a package wherein a packed cheese can ripen without deforming the package.
  • a low barrier material i.e. a high permeable material
  • a high permeable material is a material having an oxygen gas barrier of more than approximately 200 cm 3 /(m 2 -24h-atm) at 23 0 C and 50 % relative humidity on a flat film.
  • Examples of such material are polystyrene (PS), polyethylene (PE), and polypropylene (PP), at commonly used thicknesses, i.e. in the range of 200 - 600 microns.
  • a medium barrier material is a material having an oxygen gas barrier in the interval of approximately 30 - 100 cm 3 /(m 2 -24h-atm) at 23 0 C and 50 % relative humidity on a flat film.
  • Examples of such material are poly lactic acid (PLA) polymers, oriented polyamide (OPA), and polyamide (PA), at commonly used thicknesses, i.e. in the range of 50 — 500 microns.
  • PLA poly lactic acid
  • OPA oriented polyamide
  • PA polyamide
  • a high barrier material is a material having an oxygen gas barrier in the interval of approximately 4 - 30 cm 3 /(m 2 -24h-atm) at 23 0 C and 50 % relative humidity on a flat film.
  • co-polyesters such as amorphous polyethylene terephthalate (APET) or glycol modified polyethylene terephthalate (PETG); polyvinylchloride (PVC); and polyamide (PA), at commonly used thicknesses, i.e. in the range of 50 — 600 microns.
  • An ultra high barrier material is a material having an oxygen gas barrier of less than approximately 4 cm 3 /(m 2 -24h-atm) at 23 0 C and 50 % relative humidity on a flat film.
  • Examples of such material are copolymers of ethylene and vinyl alcohol (EVOH, PVOH), high-gas barrier nylon such as MXD-6, at commonly used thicknesses, i.e. in the range of 2 - 20 microns.
  • Other examples are inorganic coatings such as AlOx, and SiOx.
  • the low and high barrier materials can be co-extruded or laminated in such a fashion, that a barrier within a rather narrow barrier region is achieved.
  • the region of the oxygen gas barrier is preferably in the range of approximately 20 - 100 cm /(m -24h-atm), more preferably in the range of approximately 30 — 90 cm 3 /(m 2 -24h-atm), and the carbon dioxide barrier in the range of approximately 80 - 400 cm 3 /(m 2 -24h-atm), more preferably in the range of approximately 120 - 360 cm 3 /(m 2 -24h-atm), i.e. providing a relationship of approximately 4:1 between the transmission of carbon dioxide and the transmission of oxygen.
  • the thickness of the packaging materials or laminates is in the interval of approximately 150 to 700 microns, a package that is rigid, transparent, thermo formable and stiff is obtained.
  • the present invention is defined in the independent claims. Embodiments of the invention are set out in the dependent claims. Detailed description of the invention
  • perishables refer to food that go bad or whose quality deteriorate after a short length of storage time if not stored optimally.
  • a packaging material for cheese a package and a method for packing cheese.
  • the inventive packaging material, package and packaging method can be used for other types of food having a microbiological activity, or a tendency to generate or release carbon dioxide gas and to which oxygen gas could be harmful in a certain concentration. Examples of such foods are e.g., coffee, fruits, or vegetables.
  • the cheese can be natural cheese such as Cheddar, Gruyere, Emmenthaler, and Gouda, or process cheese containing these, sliced and non-sliced.
  • the coffee includes bean-like and pulverised-like coffee after roasting.
  • the inventive packaging material comprises a low barrier material and a high barrier material selected such that the carbon dioxide gas barrier and the oxygen gas barrier can be controlled independently of the thickness of the packaging material.
  • the barriers are controllable independently of the thickness of the packaging material.
  • the carbon dioxide gas barrier and the oxygen gas barrier cannot be controlled independently of each other.
  • the low and high barrier materials can be co-extruded or laminated in such a fashion, that a barrier within a rather narrow barrier region is achieved.
  • the region of the oxygen gas barrier is preferably in the range of approximately 30 - 90 cm 3 /(m 2 -24h-atm) at 23 0 C and 50% relative humidity. If the thickness of the barrier materials is in the interval of approximately 150 to 700 microns, a package that is rigid, transparent, thermo formable and stiff is obtained. It should however be understood that the required thickness of the barrier materials varies with the size of the package.
  • the rigid permeable packaging material for perishables having a microbiological activity comprises a first material component of an ultra-high or high barrier material, and a second material component of a low barrier material, said first and second material components being configured to provide a carbon dioxide gas barrier and an oxygen gas barrier that can be controlled independently of the thickness of the packaging material.
  • the first material component is configured to control the permeability of carbon dioxide gas and oxygen gas through said packaging material and the second material component is configured to provide stability to said packaging material.
  • one of said first and second components is configured to control the mechanical stiffness and the strength of the packaging material.
  • the first material component is configured to provide stability, thermo formability and transparency to the packaging material.
  • the second material component is configured to provide a distance between two layers of the first material component.
  • the first material component can be a co-polyester such as amorphous polyethylene terephthalate, APET, or a PETG-type co-polyester, i.e. a co-polyester of glycol modified polyethylene terephthalate type.
  • the second material component can be polyethylene, PE, or polypropylene, PP.
  • the first material component can constitute an outer and an inner layer, each of which having a thickness in the range of approximately 20 - 80 microns, e.g.
  • the second material component can constitute an intermediate layer having a thickness in the range of approximately 230 — 600 microns, e.g. 300 microns.
  • a tie can be applied between the different layers.
  • the tie can for example be MAH, i.e. Maleic AnHydride types of copolymer.
  • APETZPEZAPET is stiff even with a thick polyethylene layer, if the APET layers constitute more than 10+10% of the total structure, the E-modulus APET is 1900 NZmm 2 and the low density polyethylene, LDPE, is 300 NZmm 2 .
  • the PETG-type or other co-polyester mentioned above has preferably the property of remaining totally amorphous. Exemplifying embodiment PETG/PS or PETG/PS/PETG
  • the second material component can be configured to provide stability, thermo formability and transparency to said packaging material.
  • the first material component can be a co-polyester such as glycol modified polyethylene terephthalate, PETG, and the second material component can be polystyrene, PS.
  • the second material component can for example be a transparent polystyrene terpolymer.
  • the first material component can constitute a first layer and the second material component can constitute a second layer of a packing material.
  • the first material component can further constitute a third layer.
  • the first and third layers can constitute inner and outer layers of the packing material and the second layer can constitute an intermediate layer of the packing material.
  • the second layer of the second material component is further configured to provide a distance between the two layers of the first material component.
  • the layer or layers of said first material component has preferably a total thickness in the range of approximately 40 — 140 microns, e.g. 90 microns.
  • each of the layers has a thickness in the range of approximately 20 — 70 microns, e.g. 45 microns.
  • the second layer can have a thickness in the range of approximately 270 - 600 microns, e.g. 290 microns.
  • a tie e.g. a polystyrene terpolymer or ABS, can be applied between the different layers.
  • the second material component further is configured to provide stability, thermo formability, transparency and a distance between two layers of said first material component.
  • the first material component can be polyamide, PA, and the second material component can be polystyrene, PS, or polypropylene, PP.
  • the first material component can constitute a first layer and the second material component can constitute a second layer of a packing material.
  • the first material can further constitute a third layer.
  • the first and third layers can constitute inner and outer layers of the packing material and the second layer can constitute an intermediate layer of the packing material.
  • the layer or layers of the first material component has preferably a total thickness in the range of approximately 10 - 80 microns, e.g. 60 microns.
  • each of the layers has a thickness in the range of approximately 5 - 40 microns, e.g. 30 microns.
  • the layer of the second material component can constitute an intermediate layer having a thickness in the range of approximately 150 - 700 microns, e.g. 350 microns.
  • a suitable tie can be applied between the different layers.
  • the second material component is configured to provide stability, thermo formability, and transparency to the packing material.
  • the first material component can be a copolymer of ethylene and vinyl alcohol, EVOH, and the second material component can be polystyrene, PS.
  • the EVOH is preferably blended with an inorganic filling material or a polyethylene based copolymer. If not blended, the EVOH could be too tight for some applications.
  • the first material component, EVOH-blend can constitute an intermediate layer having a thickness in the range of approximately 2 - 20 microns, e.g. 4 microns.
  • the second material component can constitute an inner and an outer layer, each of which having a thickness in the range of approximately 75 — 350 microns, e.g. 200 microns.
  • a tie e.g. a polyethylene based copolymer, can be applied between the different layers.
  • the first and second material components of the inventive packing material can be co-extruded or laminated in order to form an end product, e.g. a package.
  • the inventive packaging material is further intended for packing of perishables having a microbiological activity, such as cheese, coffee, fruits, or vegetables.
  • the present invention also refers to a permeable rigid package for perishables having a microbiological activity, which package comprises the inventive packaging material.
  • the invention refers to a method for packaging perishables having a microbiological activity, the method comprises the step of using the inventive packaging material.
  • the inventive packaging material can be used for packing products or perishables under vacuum or in a modified gas mixture, e.g. by modified atmosphere packaging (MAP).
  • MAP modified atmosphere packaging
  • first and second material components can be selected among other ultra high or high barrier materials and low barrier materials, respectively, than those mentioned above. Further, it should be understood that embodiments of the inventive packing material described above can be provided with a sealing layer of polyethylene or polyethylene peel in order to provide an easy-open solution.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Packages (AREA)
  • Wrappers (AREA)

Abstract

L'invention concerne un matériau d'emballage, en particulier un matériau d'emballage perméable rigide, pour denrées périssables ayant une activité microbiologique, un emballage dudit matériau et un procédé de conditionnement de denrées périssables. Le matériau d'emballage comprend un premier composant en un matériau à barrière ultra élevée ou élevée, et un second composant en un matériau à barrière faible, lesdits premier et second composants étant configurés de manière à constituer une barrière au dioxyde de carbone gazeux et une barrière à l'oxygène gazeux, pouvant être contrôlées indépendamment de l'épaisseur du matériau d'emballage.
PCT/SE2005/001167 2004-07-30 2005-07-19 Materiau d'emballage permeable WO2006011842A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05759031A EP1771301A4 (fr) 2004-07-30 2005-07-19 Materiau d'emballage permeable
NO20070846A NO20070846L (no) 2004-07-30 2007-02-14 Gjennomtrengelig forpakningsmateriale

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0401959-2 2004-07-30
SE0401959A SE0401959D0 (sv) 2004-07-30 2004-07-30 Permeable packing material

Publications (1)

Publication Number Publication Date
WO2006011842A1 true WO2006011842A1 (fr) 2006-02-02

Family

ID=32867318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2005/001167 WO2006011842A1 (fr) 2004-07-30 2005-07-19 Materiau d'emballage permeable

Country Status (4)

Country Link
EP (1) EP1771301A4 (fr)
NO (1) NO20070846L (fr)
SE (1) SE0401959D0 (fr)
WO (1) WO2006011842A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084127A1 (fr) 2010-12-23 2012-06-28 Amcor Flexibles Kreuzlingen Ltd. Matériau pour sachet souple
US11142870B2 (en) 2014-07-04 2021-10-12 Danapak Flexibles A/S Packaging sheet for packaging of cheese, and associated packaging and manufacturing methods

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US3874989A (en) * 1971-12-24 1975-04-01 Basf Ag Composite film and sheeting
US4107362A (en) * 1976-11-22 1978-08-15 Valyi Emery I Multilayered container
US4182457A (en) * 1976-08-10 1980-01-08 Toyo Seikan Kaisha Limited Multilayer container
US5763095A (en) * 1995-11-29 1998-06-09 W. R. Grace & Co.-Conn. Breathable film for cheese packaging
EP1097810A2 (fr) * 1999-11-04 2001-05-09 Cryovac, Inc. Film respirant pour l'emballage des fromages
EP1245617A1 (fr) * 1999-11-12 2002-10-02 Kureha Chemical Industry Co., Ltd. Film permeable selectivement au dioxyde de carbone et film d'emballage d'aliments le contenant

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DE4309534C1 (de) * 1993-03-24 1994-08-04 Inventa Ag Transparentes Copolyamid und dessen Verwendung als Barriereschicht
EP0925915B1 (fr) * 1996-09-13 2004-01-21 Kureha Kagaku Kogyo Kabushiki Kaisha Contenant creux multicouches a effet barriere vis-a-vis des gaz
KR100220781B1 (ko) * 1996-09-26 1999-09-15 아라끼 타다시 선택투과성 필름
JP2001526987A (ja) * 1997-12-24 2001-12-25 フード・アンド・パッケージング・センター・マネージメント・リミテッド 透過性包装フィルム
DE10234783A1 (de) * 2002-07-30 2004-02-19 Cfs Gmbh Kempten Folie mit einer Gasbarriereschicht

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874989A (en) * 1971-12-24 1975-04-01 Basf Ag Composite film and sheeting
US4182457A (en) * 1976-08-10 1980-01-08 Toyo Seikan Kaisha Limited Multilayer container
US4107362A (en) * 1976-11-22 1978-08-15 Valyi Emery I Multilayered container
US5763095A (en) * 1995-11-29 1998-06-09 W. R. Grace & Co.-Conn. Breathable film for cheese packaging
EP1097810A2 (fr) * 1999-11-04 2001-05-09 Cryovac, Inc. Film respirant pour l'emballage des fromages
EP1245617A1 (fr) * 1999-11-12 2002-10-02 Kureha Chemical Industry Co., Ltd. Film permeable selectivement au dioxyde de carbone et film d'emballage d'aliments le contenant

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Title
See also references of EP1771301A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084127A1 (fr) 2010-12-23 2012-06-28 Amcor Flexibles Kreuzlingen Ltd. Matériau pour sachet souple
US9550608B2 (en) 2010-12-23 2017-01-24 Amcor Flexibles Dreuzlingen Ltd. Flexible bag material
EP2655060B1 (fr) * 2010-12-23 2018-02-28 Amcor Flexibles Kreuzlingen Ltd. Materiau souple de sac
US11142870B2 (en) 2014-07-04 2021-10-12 Danapak Flexibles A/S Packaging sheet for packaging of cheese, and associated packaging and manufacturing methods

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EP1771301A4 (fr) 2011-03-23
SE0401959D0 (sv) 2004-07-30
EP1771301A1 (fr) 2007-04-11

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