EP0216094A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Smokable synthetic food-packaging film
Assignee: Kureha Corp
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Filing: 1986-08-05
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Granted: —
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Expires: 2006-08-05
Abstract
Abstract Disclosed herein is a smokable food-packaging film comprising at least one layer of a mixture of 50 to 90 wt% polyamide and l0 to 50 wt% copolymer of α-olefin and vinyl alcohol, which has the properties of a permeability to 50 % concentration methanol of not less than 200 g/m².day.atm at a temperature of 60°C and a relative humidity of 0 % and an oxygen gas-permeability of not more than 50 cc/m².day.atm at a temperature of 30°C and a relative humidity of 60 %.
Inventors
- 👤 Nobuyuki Hisazumi
- 👤 Shinichiro Funabashi
- 👤 Yoshihiko Tomioka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 00:33
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; A; A22; A22C; A22C13/00; A22C13/0013; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L77/00; A22C2013/0063; A22C2013/0089; C08L77/02; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1324; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31779; Y10T428/31855; Y10T428/3188; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
83 words
A smokable food-packaging film comprising at least one layer of a mixture of 50 to 90 wt% polyamide and l0 to 50 wt% copolymer of α-olefin and vinyl alcohol, said layer having the properties of a permeability to 50 % concentration of methanol of not less than 200 g/m².day.atm at a temperature of 60°C and a relative humidity of 0 % and an oxygen gas-permeability of not more than 50 cc/m².day.atm at a temperature of 30°C and a relative humidity of 60 %.
Claim 2
Dependent Claim
83 words
A smokable food-packaging film comprising at least one layer of a mixture of 50 to 90 wt% polyamide and l0 to 50 wt% copolymer of α-olefin and vinyl alcohol, said layer having the properties of a permeability to 50 % concentration of methanol of not less than 200 g/m².day.atm at a temperature of 60°C and a relative humidity of 0 % and an oxygen gas-permeability of not more than 50 cc/m².day.atm at a temperature of 30°C and a relative humidity of 60 %.
Claim 3
Dependent Claim
42 words
A smokable food-packaging film according to claim l, wherein said polyamide is nylon 6, nylon 7, nylon 8, nylon l0, nylon ll, nylon l2, nylon 6 - 6, nylon 6 - l0, a mixture thereof or a copolymer of the monomers thereof.
Claim 4
Dependent Claim
16 words
A smokable food-packaging film according to claim l, wherein said α-olefin is ethylene, propylene, or butene-l.
Claim 5
Dependent Claim
25 words
A smokable food-packaging film according to claim l, wherein vinyl unit of said copolymer of α-olefin and vinyl alcohol is 40 to 80 mol %.
Claim 6
Dependent Claim
123 words
A smokable food-packaging film comprising a layer of a mixture of 50 to 90 wt% polyamide and l0 to 50 wt% copolymer of α-olefin and vinyl alcohol according to claim l, and at least one layer selected from the group consisting of (a) an α-olefin copolymer of polyethylene, polypropylene, or polybutene-l, (b) a copolymer of ethylene, propylene or butene-l and vinyl acetate or (metha) acrylic ester, (c) a copolymer of ethylene, propylene or butene-l and (metha) acrylic acid, and a metal salt thereof, (d) an elastomer of plasticized polyvinyl chloride, polyester or a styrene rubber, (e) a cellulose, and (f) a polyamide having an oxygen gas-permeability of more than 50 cc/m².day.atm at a temperature of 30°C and a relative humidity of 60 %.
Claim 7
Dependent Claim
34 words
A smokable food-packaging film according to claim l or 5, wherein the thickness of said layer of a mixture of polyamide and a copolymer of α-olefin and vinyl alcohol is l5 to l00 µm.
Claim 8
Dependent Claim
20 words
A smoked food package comprising a foodstuff which is packaged in a smokable film according to claim l or 5.
References Cited (Backward Citations)
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