发明名称 |
Heat-sealable polypropylene films |
摘要 |
A heat-sealable oriented polypropylene film comprising a base oriented polypropylene film having on one surface a layer of a random propylene/ethylene copolymer (ethylene content 2-6% by weight) and on the other surface a predominantly linear random copolymer of ethylene and a further alpha olefin having at least three carbon atoms per molecule (for example propylene and butene-1) the further alpha olefin content being 6-40% by weight. The film is particularly useful for packaging merchandise on horizontal form-fill-seal packaging machines.
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申请公布号 |
US4297415(A) |
申请公布日期 |
1981.10.27 |
申请号 |
US19790069091 |
申请日期 |
1979.08.23 |
申请人 |
BRITISH CELLOPHANE LIMITED |
发明人 |
WARD, HERBERT J.;DOBBIE, DEREK J.;LYALL, BRIAN |
分类号 |
B29C55/00;B29C47/06;B29C47/14;B29C49/00;B29C55/02;B32B27/00;B32B27/08;B32B27/32;C08J7/04;C09J123/16;(IPC1-7):B32B27/32;B32B31/14 |
主分类号 |
B29C55/00 |
代理机构 |
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代理人 |
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