发明名称 |
STRETCHED MULTILAYER POLYPROPYLENE FILMS |
摘要 |
<p>A stretched multilayer polypropylene film is described, comprising a stretched crystalline polypropylene layer and a layer of a composition (Composition B) laminated on at least one side of said polypropylene layer, wherein the composition B comprises a homo- or copolymer composed mainly of ethylene, propylene or butene-1 and having a melting point of 150 DEG C. or less, and a vinylcycloalkane polymer in an amount of 0.05 wt ppm to 10 wt % calculated as a vinylcycloalkane unit. This multilayer film is greatly improved in optical properties such as excellent see-through properties without deteriorating its good heat sealability. Thus it is very useful for wrapping.</p> |
申请公布号 |
EP0172646(B1) |
申请公布日期 |
1989.03.01 |
申请号 |
EP19850304988 |
申请日期 |
1985.07.12 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
KAKUGO, MASAHIRO;FUKUI, YOSHIHARU;WAKATSUKI, KIZUKU;IMA, SEIICHIRO;KIMURA, JUNICHI |
分类号 |
B32B27/00;B32B27/32;C09J7/02;C09J123/08;C09J123/14 |
主分类号 |
B32B27/00 |
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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