Invention Grant
- Patent Title: Heat-shrinkable layered polyolefin film, heat-shrinkable label, and container with the label attached thereto
- Patent Title (中): 热收缩性层状聚烯烃膜,热收缩性标签,附着标签的容器
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Application No.: US10599526Application Date: 2005-03-30
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Publication No.: US07727620B2Publication Date: 2010-06-01
- Inventor: Takeyoshi Yamada , Kouichirou Taniguchi , Hideyasu Miyazaki
- Applicant: Takeyoshi Yamada , Kouichirou Taniguchi , Hideyasu Miyazaki
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Plastics, Inc.
- Current Assignee: Mitsubishi Plastics, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2004-103294 20040331; JP2004-159336 20040528; JP2005-095861 20050329
- International Application: PCT/JP2005/006160 WO 20050330
- International Announcement: WO2005/095106 WO 20051013
- Main IPC: B32B27/32
- IPC: B32B27/32

Abstract:
A heat-shrinkable polyolefin series laminated film having excellent firmness (stiffness at ordinary temperature) of film, resistance to fingerprint bleaching, shrink finishability, transparency and regeneration additivity, with a small natural shrinkage and accurately separable by specific gravity, can be provided by, in a laminated film provided with a surface layer (I) and an intermediate layer (III), forming the surface layer (I) with a mixed resin of cyclic olefin series resin and a polyethylene series resin (A) with a Tm of 80° C. or higher but no greater than 125° C. as a main component, and, forming the intermediate layer (III) with a resin composition having as a main component a cyclic olefin series resin, preferably a mixed resin composition of a cyclic olefin series resin and a polyethylene series resin (C) with a Tm exceeding 125° C. but no greater than 140° C., as a main component.
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