发明授权
- 专利标题: Stretch packaging method employing multi-layer film
- 专利标题(中): 采用多层薄膜的拉伸包装方法
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申请号: US097921申请日: 1993-07-28
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公开(公告)号: US5296580A公开(公告)日: 1994-03-22
- 发明人: Takashi Matsunaga , Keiichi Miura
- 申请人: Takashi Matsunaga , Keiichi Miura
- 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: JPX62-169501 19870707
- 主分类号: B29C61/06
- IPC分类号: B29C61/06 ; B29C55/02 ; B29K23/00 ; B29K105/02 ; B29L7/00 ; B32B27/32 ; B65D30/02 ; B65D65/02 ; B65D71/00 ; B65D71/08 ; C08F10/02 ; C08F210/16 ; C08J5/18 ; B65B11/08 ; C08F210/14
摘要:
A film for stretch packaging comprising as a substrate a film of a linear low density polyethylene having a melt flow rate (190.degree. C.), as measured by an ASTM-D-1238E method, of 0.3 to 8 g/10 min., a density, as measured by an ASTM-D-1505 method, of 0.900 to 0.918 g/cm.sup.3, a molecular weight distribution (Mw/Mn) of 2 to 6, two or more melting points existing as measured by a differential scanning calorimeter, a maximum melting point Tm.sub.1 of 118.degree. to 125.degree. C. and a ratio of the height Tm.sub.1 H of the peak of the highest melting point Tm.sub.1 to the height Tm.sub.1 H of the melting point Tm.sub.2 adjacent thereto (i.e., Tm.sub.1 H/Tm.sub.2 H), of 1.3 or less.
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