Water vapor permeable plastic film comprising inorganic particles coated with a substance having high refractive index
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United States of America Patent
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Aug 17, 1999
Grant Date -
N/A
app pub date -
Feb 19, 1997
filing date -
Feb 20, 1996
priority date (Note) -
Expired
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Abstract
The invention provides a plastic film possessing improved permeability to water vapor and high heat shielding property. Said plastic film is characterized by water vapor permeability of 100 to 25,000 g/m.sup.2 /24 hr, light transmittance of 20 to 95% and infrared transmittance of 5 to 90% and made of at least one material selected from a group comprising polyetherpolyamide block copolymer, thermoplastic polyester elastomer and thermoplastic polyurethane and containing flat inorganic particles coated with a substance having high refractive index.
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