发明授权
- 专利标题: Stretched multilayer polypropylene film
- 专利标题(中): 拉伸多层聚丙烯薄膜
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申请号: US753846申请日: 1985-07-11
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公开(公告)号: US4584239A公开(公告)日: 1986-04-22
- 发明人: Masahiro Kakugo , Yoshiharu Fukui , Kizuku Wakatsuki , Seiichiro Ima , Junichi Kimura
- 申请人: Masahiro Kakugo , Yoshiharu Fukui , Kizuku Wakatsuki , Seiichiro Ima , Junichi Kimura
- 申请人地址: JPX Osaka
- 专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人地址: JPX Osaka
- 优先权: JPX59-146656 19840713
- 主分类号: B32B27/00
- IPC分类号: B32B27/00 ; B32B27/32 ; C09J7/02 ; C09J123/08 ; C09J123/14
摘要:
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.degree. 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.
公开/授权文献
- US5267105A Disk loading device 公开/授权日:1993-11-30
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