发明名称 |
Biaxially oriented sealable polypropylene film having improved barrier properties |
摘要 |
A sealable film is disclosed comprising (i) a base layer comprising polypropylene and a hydrocarbon resin and (ii) at least one top layer comprising (a) an ethylene/propylene copolymer having an ethylene content of not more than about 10% by weight, (b) a propylene/1-butene copolymer, (c) a propylene/ethylene/alpha-olefin terpolymer, or (d) a blend of two or more of (a), (b) and (c), wherein at least one of said base layer and said at least one top layer contains an anti-blocking agent or lubricant and wherein the top layer contains a hydrocarbon resin. The film possesses improved barrier properties with respect to permeability to water vapor and oxygen, and which at the same time exhibits favorable slip properties and low shrink values.
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申请公布号 |
US5554245(A) |
申请公布日期 |
1996.09.10 |
申请号 |
US19950503028 |
申请日期 |
1995.07.17 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
SCHUHMANN, DETLEF E.;PEIFFER, HERBERT;MURSCHALL, URSULA;SCHLOEGL, GUNTER |
分类号 |
B32B27/32;(IPC1-7):B29C47/00 |
主分类号 |
B32B27/32 |
代理机构 |
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主权项 |
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地址 |
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