Heat-sealable laminated polyester film
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United States of America Patent
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-
Oct 22, 1991
Grant Date -
N/A
app pub date -
Jul 10, 1990
filing date -
Jul 14, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heat-sealable laminated film is disclosed which comprises a heat-sealing layer formed of a copolyester and having a thickness of not less than 5 .mu.m and a base layer formed of a copolyester containing the copolymerized unit common to the copolyester of the heat-sealing layer. The film of this invention excels in heat-sealing strength, is extensively usable in applications for packaging, electric insulation, and industry in general, and has high industrial value.
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