Gas barrier laminated film and a process for producing same
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United States of America Patent
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Sep 2, 2008
Grant Date -
Sep 30, 2004
app pub date -
Mar 29, 2004
filing date -
Mar 31, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Provided is a gas barrier laminated film having no fear of deterioration in transparency and excellent in transparency and gas barrier property at a high humidity as well as a process for producing same. The present invention is featured by a gas barrier laminated film wherein a gas barrier layer (B) has been formed on at least one surface of a film substrate (A), the gas barrier layer (B) being comprised of a composition (b3) of an ethylene-vinyl alcohol copolymer (b1) having an ethylene content of 1.about.19 mol % and (meth)acrylic acid polymer (b2). In case the film substrate is coated on at least one surface thereof with a vapor deposition layer of an inorganic oxide or the OPP film is coated on at least one surface thereof with the layer of the modified propylene polymer, the gas barrier laminated film is obtained which is more enhanced in adhesion power to the film substrate.
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