发明名称 |
High free shrink, high modulus, low shrink tension film with elastic recovery |
摘要 |
A film includes a core layer including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefinic polymer; the film having Young's modulus between about 50,000 and about 200,000 psi, free shrink between about 10% and about 80% at 240° F., and shrink tension of less than about 400 psi, or a shrink force of between about 20 and about 180 grams, at 240° F. First and second intermediate layers including an ethylene copolymer having a melt index less than about 2 g/10 minutes can be optionally included. Alternatively, a film includes a core layer including an ethylene copolymer having melt index less than about 2 g/10 minutes; first and second intermediate layers including a homogeneous random alpha-olefin/cyclic olefin copolymer; and first and second outer layers including an olefinic polymer; the film having properties as disclosed above.
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申请公布号 |
US2004142195(A1) |
申请公布日期 |
2004.07.22 |
申请号 |
US20030634294 |
申请日期 |
2003.08.05 |
申请人 |
ROBERTS WILLIAM P.;MOFFITT RONALD D.;DAYRIT RICHARD M.;CHILDRESS BLAINE C.;GAUTHIER WILLIAM J.;LAMBERT W. SCOTT |
发明人 |
ROBERTS WILLIAM P.;MOFFITT RONALD D.;DAYRIT RICHARD M.;CHILDRESS BLAINE C.;GAUTHIER WILLIAM J.;LAMBERT W. SCOTT |
分类号 |
B32B27/32;B29C61/06;B29K23/00;B29K45/00;B29K105/02;B29L7/00;B29L9/00;B32B27/08;(IPC1-7):B32B27/08 |
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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