发明授权
US5756193A Polyethylene resin composition for heavy-duty packaging bag and
polyethylene resin film produced from the same
失效
用于重型包装袋和聚乙烯树脂膜的聚乙烯树脂组合物由其制成
- 专利标题: Polyethylene resin composition for heavy-duty packaging bag and polyethylene resin film produced from the same
- 专利标题(中): 用于重型包装袋和聚乙烯树脂膜的聚乙烯树脂组合物由其制成
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申请号: US623147申请日: 1996-03-28
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公开(公告)号: US5756193A公开(公告)日: 1998-05-26
- 发明人: Akihiko Yamamoto , Naoshi Hamada , Toshihiro Nishimura , Kouji Kitahara
- 申请人: Akihiko Yamamoto , Naoshi Hamada , Toshihiro Nishimura , Kouji Kitahara
- 申请人地址: JPX Tokyo
- 专利权人: Mitsui Petrochemical Industries, Ltd.
- 当前专利权人: Mitsui Petrochemical Industries, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX7-072072 19950329
- 主分类号: B65D30/02
- IPC分类号: B65D30/02 ; B65D30/10 ; C08F4/642 ; C08J5/18 ; C08L23/00 ; C08L23/04 ; C08L23/06 ; C08L23/08
摘要:
Disclosed is a polyethylene resin composition for heavy-duty packaging bag, which has a specific MFR, a specific density and a specific melt tension and which comprises (I) a linear low-density polyethylene resin prepared from ethylene and an .alpha.-olefin of 4 or more carbon atoms and having a specific MFR, a specific molecular weight distribution and a density of 0.900 to 0.918 g/cm.sup.3, (II) a linear medium or high-density polyethylene resin having a density of 0.935 to 0.970 g/cm.sup.3 and (III) a high-pressure low-density polyethylene resin having a density of 0.915 to 0.924 g/cm.sup.3, in a specific ratio of components. Also disclosed is a polyethylene resin film prepared from said composition. The composition is able to provide a film which is excellent in low-temperature properties such as low-temperature drop-bag strength and can be advantageously used for a heavy-duty packaging bag even in a cold district of below-freezing temperature. The polyethylene resin film exerts the above-mentioned effects.