发明授权
- 专利标题: Resin composition and stretched film obtained by using the same
- 专利标题(中): 树脂组合物和通过使用其获得的拉伸膜
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申请号: US10572385申请日: 2004-09-17
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公开(公告)号: US07722961B2公开(公告)日: 2010-05-25
- 发明人: Tsutomu Tasaki , Toshihiro Nishimura , Hiroshi Inoue
- 申请人: Tsutomu Tasaki , Toshihiro Nishimura , Hiroshi Inoue
- 申请人地址: JP Tokyo
- 专利权人: Prime Polymer Co., Ltd.
- 当前专利权人: Prime Polymer Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2003-328131 20030919
- 国际申请: PCT/JP2004/013660 WO 20040917
- 国际公布: WO2005/028553 WO 20050331
- 主分类号: B32B27/32
- IPC分类号: B32B27/32 ; C08L23/00 ; C08L23/08
摘要:
A polyethylene-based stretched film with a thickness in the range of 10 to 100 μm, the film comprising components (A) and (B) (the total amount of components (A) and (B) being 100 parts by weight), and has a density in the range of 898 to 960 Kg/m3: (A) 50 to 95 parts by weight of a polyethylene composition which comprises the following components (I) and (II) (the total amount of (I) and (II) being 100 parts by weight), and has a density in the range of 890 to 940 Kg/m3: (I) 5 to 95 parts by weight of an ethylene/alpha-olefin copolymer obtained by copolymerization of ethylene and an alpha-olefin having 4 to 12 carbon atoms with the use of a metallocene catalyst, which has a melt flow rate in the range of 0.01 to 10 g/10 min and a density in the range of 900 to 925 Kg/m3, and, (II) 5 to 95 parts by weight of an ethylene/alpha-olefin copolymer obtained by copolymerization of ethylene and an alpha-olefin having 4 to 12 carbon atoms with the use of a metallocene catalyst, which has melt flow rate in the range of 1 to 100 g/10 min and a density in the range of 926 to 960 Kg/m3; and (B) 5 to 50 parts by weight of a high-pressure low density polyethylene which has a melt flow rate in the range of 0.1 to 10 g/10 min, and a density in the range of 910 to 930 Kg/m3.