Title:
PP BASED SHEET FOR PTP
Document Type and Number:
Japanese Patent JP3157128
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a polypropylene based sheet for PTP having a wide molding condition range, good in impact resistance, reduced in curling and excellent in transparency, moisture-proofness or the like necessary as PTP packaging.
SOLUTION: In a PP type sheet with a thickness of 0.15-0.45 mm consisting of three layers, both outer layers thereof have a thickness of 0.005-0.095 mm and are composed of an ethylene/propylene block copolymer and the intermediate layer thereof is composed of a resin compsn. consisting of an ethylene/ propylene block copolymer and a petroleum resin and the degree of crystallization of the sheet by a wide angle X-ray diffraction method is 2-30%.
Inventors:
Ichiro Matsui
Application Number:
JP22804297A
Publication Date:
April 16, 2001
Filing Date:
August 25, 1997
Export Citation:
Assignee:
Sumitomo Bakelite Co., Ltd.
International Classes:
B65D75/34; B32B27/32; B65D65/40; (IPC1-7): B65D75/34; B32B27/32; B65D65/40
Domestic Patent References:
| JP5170259A | ||||
| JP7308998A |