发明名称 |
A polypropylene composition used for producing a film |
摘要 |
<p>This invention concerns biaxially oriented polypropylene films containing from 1 to 40 percent by weight of a hydrocarbon resin, the resin being substantially miscible with the polypropylene, and the film having a crease retention of at least 50% as measured by ASTM D920-49. The hydrocarbon resin is preferably a terpene resin, a hydrogenated synthetic resin or a compatible rosin. Crease retention values in excess of 70% have been achieved in particular by orienting the films at a temperature of at least 10 Centigrade degrees below the crystalline melting point of the polypropylene.</p> |
申请公布号 |
IN174624(B) |
申请公布日期 |
1995.01.21 |
申请号 |
IN1988DE92219 |
申请日期 |
1988.10.25 |
申请人 |
COURTAULDS FILMS & PACKAGING HOLDINGS LTD. |
发明人 |
SYME BLAIR GRIEVE WILSON;CRIGHTON ALLAN JOHN |
分类号 |
C08J5/18;C08L23/10;C08L23/12;C08L23/14;C08L57/02;(IPC1-7):C08L23/12 |
主分类号 |
C08J5/18 |
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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