发明名称 |
Strukket, varmeforseglbar polypropylenfolie med flere sjikt |
摘要 |
<p>The present invention relates to an oriented, heat-sealable polypropylene film having an improved water vapour barrier action at the same time as considerably reduced global migration for packaging purposes, and having the layer structure ABCBA, where a) C is a base layer comprising polypropylene and a hydrocarbon resin with a molecular weight of up to about 2000 g/mol and a softening point of above 130@, b) B are two hydrocarbon resin-free jacket layers of highly isotactic polypropylene having an isotacticity of > 94%, where the ratio between the thickness of a jacket layer and the thickness of the base layer is between 0.01 and 0.1, and c) A are two top layers of a heat-sealable polyolefin copolymer or terpolymer, where these top layers contain at least one antiblocking agent, lubricant and antistatic.</p> |
申请公布号 |
NO940836(D0) |
申请公布日期 |
1994.03.09 |
申请号 |
NO19940000836 |
申请日期 |
1994.03.09 |
申请人 |
WOLFF WALSRODE AG |
发明人 |
BRANDT, RAINER;REINERS, ULRICH;KRALLMANN, ANTON;BOHNER, JURGEN;NEELEN, NEELE |
分类号 |
B32B27/32;B65D1/00;B65D65/42;(IPC1-7):B32B27/32 |
主分类号 |
B32B27/32 |
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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