Laminated polyester film
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United States of America Patent
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Dec 26, 2000
Grant Date -
N/A
app pub date -
Jun 11, 1998
filing date -
Jun 12, 1997
priority date (Note) -
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Abstract
A laminated polyester film stretched in at least one direction, comprising: a polyester support, and at least one enhanced adhesion layer laminated on the polyester support, comprising a composition comprising: (1) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a vinylpyrrolidone copolymer resin (C1); or (2) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a polyglycerol polyglycidyl ether (C2); or (3) an aqueous-type polyurethane (A3), a polyvinyl alcohol resin (B3), and inert particles wherein the thickness (L) of the adhesion layer and the average particle diameter (d) of said inert particles satisfies the equation
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