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US 7,022,388 B2Granted
Laminated polyester film and laminated film
AssigneeTeijin Dupont Films Japan Limited
InventorsKatsuyuki Hashimoto, Makoto Handa, Shinji Yano, Koji Kubo
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AssigneeTeijin Dupont Films Japan Limited
InventorsKatsuyuki Hashimoto, Makoto Handa, Shinji Yano, Koji Kubo
Estimating the term…
There is provided a laminated polyester film which is improved in lubricity, transparency, dimensional stability, shock resistance and adhesion, and which comprises a polyester base film comprising polyester and to at least one direction, and a coating layer provided on at least one surface of the base film, wherein said coating layer contains polymer binder and inert particles, the refractive index of the inert particles being substantially same as that of the polymer binder, and wherein the laminated polyester film has a haze of 1.5% or less, a total light transmittance of 85% or more, 50% destructing energy per 100 μm film thickness of 0.3 J or more, and a thermal shrinkage at 230° C. for 30 minutes of 4% or less.
A laminated polyester film comprising a polyester base film stretched to at least one direction, and a coating layer provided on at least one surface of the polyester base film, wherein said coating layer contains polymer binder and inert particles, wherein the difference in refractive index of the inert particles and the polymer binder is 0.04 or less, and wherein the laminated polyester film has a haze of 1.5% or less, a total light transmittance of 85% or more, a 50% destructing energy per 100 μm film thickness of 0.3 J or more, and a thermal shrinkage ratio at 230° C. for 30 minutes of 4% or less.
Dependencies are inferred from the claim text.