Title:
POLYOLEFINIC HEAT-SHRINKABLE MULTILAYERED FILM AND SHRINK PACKING METHOD USING THE SAME
Document Type and Number:
Japanese Patent JP3093449
Kind Code:
B2
Abstract:
PURPOSE: To provide a polyolefinic heat-shrinkable film excellent in heat sealability, heat shrinkability and cutting-off properties in perforation and suitable for pillow sleeve packing.
CONSTITUTION: A heat-shrinkable multilayered film is constituted of a surface layer composed of a polypropylene type resin with propylene content of 85-96wt.% and a core layer composed of a resin compsn. consisting a polypropylene type resin and a polyethylenic resin and characterized by that the propylene content in the total constitutional resin is 70-85wt.%, a shrinkage factor in a longitudinal direction is 25-45% (120°C), a shrinkage factor in a lateral direction is 1.2-3.5 times that in the longitudinal direction and lateral perforations are provided at a definite interval in the longitudinal direction if necessary.
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Inventors:
Satoshi Maruyama
Naoki Takao
Kazuo Kondo
Naoki Takao
Kazuo Kondo
Application Number:
JP16383992A
Publication Date:
October 03, 2000
Filing Date:
May 29, 1992
Export Citation:
Assignee:
Okura Industry Co., Ltd.
International Classes:
B32B7/02; B32B27/32; B65B53/00; B65B53/02; (IPC1-7): B32B27/32
Domestic Patent References:
| JP319840A | ||||
| JP1317765A | ||||
| JP6169453A | ||||
| JP6456547A | ||||
| JP57165254A | ||||
| JP5010371A |
Attorney, Agent or Firm:
Toshiaki Ikeura (1 outside)