发明名称 |
Biaxially stretched five-layer film for packaging food |
摘要 |
A biaxially stretched five-layer film suitable for packaging fatty foodstuffs of irregular shape is disclosed, which has a first (outermost) layer made of an ionomer, an olefin homopolymer, an olefin copolymer or a mixture of the olefin homopolymer with the olefin copolymer, a second layer of an ethylene copolymer, a third layer of a vinylidene copolymer, a fourth layer of an ethylene copolymer and a fifth (innermost) layer of an ionomer. This film is obtained by preparing a laminate consisting of the layers of respective resins mentioned above by means of a specific die designed for multi-layer tubular molding and biaxially stretching the laminate under specific conditions.
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申请公布号 |
US4161562(A) |
申请公布日期 |
1979.07.17 |
申请号 |
US19770862135 |
申请日期 |
1977.12.19 |
申请人 |
KUREHA KAGAKU KOGYO K K |
发明人 |
HISAZUMI, NOBUYUKI;YAMAMOTO, MASATAKA;YOSHIKAWA, SHINSUKE |
分类号 |
B65D65/40;B29C47/00;B29C47/06;B29C49/00;B29C55/00;B29C55/12;B29C61/06;B32B27/08;B32B27/30;B32B27/32;(IPC1-7):B32B7/02 |
主分类号 |
B65D65/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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