Monoaxially oriented multilayered packaging material
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United States of America Patent
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Sep 20, 1994
Issued Date -
N/A
app pub date -
Aug 23, 1993
filing date -
Jan 30, 1990
priority date (Note) -
Expired
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Abstract
A multilayered packaging material having good piercing resistance and tearability and being excellent in appearance, transparency and so forth, can be produced by orienting multilayered structure which is composed of a polyamide resin layer and other thermoplastic resin layer(s) at a monoaxially stretching ratio of 1.5- to 7.0-fold in such a manner that the thickness of the polyamide resin layer is 3 to 30 .mu.m and the thickness(es) of the other thermoplastic resin layer(s) is (are) at least twice as much as that of the polyamide resin layer.
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