发明名称 |
IMPROVED COMPOSITION FOR UNIAXIALLY HEAT-SHRINKABLE BIAXIALLY ORIENTED POLYPROPYLENE FILM |
摘要 |
<p>A uniaxially heat-shrinkable, biaxially oriented, multilayer film having a polypropylene-containing core layer comprising at least 70 wt. % of said multilayer film and optionally, at least one polyolefin-containing skin layer adjacent said core layer, is prepared by biaxially orienting a coextrudate and therefore orienting said coextrudate by stretching 10 to 40 % in the machine direction. The core layer contains isotactic polypropylene and a sufficient amount of syndiotactic polypropylene to inhibit uniaxial heat shrinkage at temperature below about 50 DEG C. The skin layer can be selected from the group consisting of polypropylene, ethylene-propylene copolymer, polyethylene, and ethylene-propylene-butylene terpolymer.</p> |
申请公布号 |
EP0983138(A4) |
申请公布日期 |
2000.07.12 |
申请号 |
EP19980920382 |
申请日期 |
1998.05.07 |
申请人 |
MOBIL OIL CORPORATION (A NEW YORK CORPORATION) |
发明人 |
AMON, MORIS;PEET, ROBERT, GUTHRIE;PELLINGRA, SALVATORE, JAMES, JR. |
分类号 |
C08J5/18;B29C55/02;B32B27/32;C08L23/10;(IPC1-7):B32B1/08;B29D23/00;B65B53/02 |
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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