Gas barrier film

Patent name Film containing a gas barrier layer Patent applicant Applicant CFS Kempervine GmbH Principal Applicant Address Kempten Inventor W. Bernig; B. Dujading; S. Ganderrose; C. Schwee Czer application (patent) No. 03818119.3 Date of application 2003.07.25 Approval date Approval notice No. 1671551 Approval announcement date 2005.09.21 Instruction CD D0538 Main classification number B32B27/34 Classification number B32B27/34; B32B27/08; B65D85/76 points Patent Application No. 2002.7.30 DE 10234783.2 Abstract The present invention relates to an Osub2/sub gas barrier layer consisting essentially of a mixture of at least one layer of an ethylene/vinyl alcohol copolymer (EVOH) and at least one of a plurality of polyamides. The resulting monolayer or multilayer film, the use of the film as a packaged perishable product such as food, and the package made from the film of the present invention suitable for use in perishable degassing products, especially cheese ripening bags. Sovereignty Claims 1. A film comprising at least one O2 gas barrier layer consisting essentially of a mixture of an ethylene/vinyl alcohol copolymer (EVOH) and at least one of a plurality of polyamides. Amides are made from 3 components I) Hexamethylenediamine/adipic acid (polyamide 6,6) II) Hexamethylenediamine/sebacic acid (polyamide 6,9) and/or VI Methylenediamine/sebacic acid (polyamide 6,10) and III) hexamethylenediamine/isophthalic acid (polyamide 6,I) and/or hexamethylenediamine/terphenyl Formic acid (polyamide 6, T). International Application PCT/EP2003/008256 2003.7.25 International Publication WO2004/012939 Germany 2004.2.12 Date of Entry into the Country Patent Agency China Patent Agency (Hong Kong) Co., Ltd. Agency Address Agent Liu Yuanjin; Li Liantao