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Patent Searching and Data


Title:
POLYOLEFIN RESIN MULTILAYER STRETCHED FILM
Document Type and Number:
Japanese Patent JPH1034847
Kind Code:
A
Abstract:

To obtain a film which has so-called nerve even in case of a thin thickness and no packaging trouble in a packaging machine and can heat seal by constituting both surface layers by copolymer composition containing propylene, ethylene and specific olefin.

The multilayer stretched film comprises at least four layers of both surface layers, an oriented auxiliary layer and a core layer in such a manner that mean 100% elongation load in lateral and longitudinal directions is 100 to 600g/cm width. Both the surface layers are formed of a copolymer composition containing propylene, ethylene and at least one type of 4-8C α-olefin. In rectangular coordinates in which a melting point of the copolymer composition is an abscissa axis and a bending elastic modulus (kg/mm2) is an ordinate axis, the copolymer composition is in a range of connecting three points of coordinate points A (120, 45), B (145, 45) and C (145, 100) by straight lines.


Inventors:
ONO TOSHIAKI
Application Number:
JP19652996A
Publication Date:
February 10, 1998
Filing Date:
July 25, 1996
Export Citation:
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Assignee:
ASAHI CHEMICAL IND
International Classes:
B65D71/08; B29C55/12; B32B27/32; C08L23/00; C08L23/14; B29K23/00; B29L9/00; (IPC1-7): B32B27/32; B32B27/32; B65D71/08