发明名称 |
Biaxially oriented opaque polypropylene film laminate, for in-mold labeling in injection molding container e.g. of polyethylene or polypropylene, has base with vacuoles, vacuole-free layer and top copolymer layer with low ethylene content |
摘要 |
<p>Biaxially oriented opaque polypropylene laminated film (I), with a density of 0.4-0.7 g/cm3, has (A) a base layer with a density of 0.35-0.6 g/cm3, which contains vacuoles but no additives of density higher than that of the polypropylene; (B) intermediate layer(s) with no vacuoles; and (C) top layer(s) containing not less than 80 wt.% copolymer of 1.2 to under 2.8 wt.% ethylene and 97.2-98.8 wt.% propylene. Biaxially oriented opaque polypropylene laminated film (I), with a density of 0.4-0.7 g/cm3, has (A) a base layer with a density of 0.35-0.6 g/cm3, which contains vacuoles but no additives of density higher than that of the polypropylene; (B) intermediate layer(s) with no vacuoles; and (C) top layer(s) containing not less than 80 wt.% copolymer of 1.2 to under 2.8 wt.% ethylene and 97.2-98.8 wt.% propylene with melting point 145-160degreesC and melt enthalpy 80-110 J/g. An Independent claim is also included for laminated film (II), which is the same as (I) except that it has a density of 0.45-0.95 g/cm3 and the base layer has a density of 0.4-0.9 g/cm3 and contains titanium dioxide (TiO2).</p> |
申请公布号 |
DE10235557(A1) |
申请公布日期 |
2004.02.26 |
申请号 |
DE2002135557 |
申请日期 |
2002.08.03 |
申请人 |
TRESPAPHAN GMBH |
发明人 |
KOCHEM, KARL-HEINZ;LAUER, ALBERT;ROTH, MATHIAS;TEWS, WILFRIED |
分类号 |
B29C45/14;B29C49/24;B32B27/18;B32B27/32;G09F3/02;(IPC1-7):B32B27/32 |
主分类号 |
B29C45/14 |
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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