发明名称 |
Polyolefin film with peelable cover layer |
摘要 |
<p>A peelable biaxially oriented polyolefin multilayer film with at least three layers including: <??>(a) a transparent polyolefin base layer; <??>(b) peelable top layer(s) from one or more ethylenic polymers or copolymers; and <??>(c) intermediate layer(s) of one or more ethylenic polymers or copolymers is new. <??>An Independent claim is included for preparation of the multilayer film by coextrusion of melts of the base and intermediate layer through a flat nozzle, consolidation of the film by passage through rollers, followed by stretching, pressing of the top layer on the intermediate layer, with heating, and stretching of the multilayer tape thus formed.</p> |
申请公布号 |
EP1258348(B1) |
申请公布日期 |
2010.01.13 |
申请号 |
EP20020009371 |
申请日期 |
2002.05.06 |
申请人 |
WIPAK WALSRODE GMBH & CO. KG |
发明人 |
SPERLICH, BERND, DR.;WUNDERLICH, HANS, DR.;WAGNER, HELMUT;SCHWARZ, WILLI |
分类号 |
B32B27/32;B32B37/15 |
主分类号 |
B32B27/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|