LOW TEMPERATURE SHRINKABLE MULTILAYERED POLYOLEFINIC FILM AND MANUFACTURING METHOD THEREFOR
- 申请公布号：
- JP2004017545(A)
- 申请号：
- JP20020177854
- 申请日期：
- 2002.06.19
- 申请公布日期：
- 2004.01.22
- 申请人：
- GUNZE LTD
- 发明人：
- FUNAZAKI KOJI;KUBO SHINICHI;YOSHIDA SHOJI
- 分类号：
- B32B27/32;(IPC1-7):B32B27/32
- 主分类号：
- B32B27/32
- 摘要：
- PROBLEM TO BE SOLVED: To provide a multilayered film more improved in commodity function, protective function or the like along with heat skrinkability at a lower temperature and enabling low temperature heat shrink packaging. SOLUTION: Surface layers (2) are laminated on both surfaces of a core layer (1) which is a layer mainly comprising either one of binary-ternary copolymers with a melting point of 100-140°C based on propylene and containing ethylene or butene -1 or ethylene and butene -1. Further, each of the surface layer (2) is a layer mainly comprising a copolymer having a melting point higher than that of the copolymer of the core layer and based on propylene and contains a 4-8Cα-olefin. Further preferably, an intermediate layer (3), which comprises a blend of a polybutene resin and linear low density polyethylene being a main component obtained by the copolymerization of ethylene and a 4-8Cα-olefin, is laminated. COPYRIGHT: (C)2004,JPO
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