发明授权
US5939183A Water vapor permeable plastic film comprising inorganic particles coated with a substance having high refractive index 失效
水蒸气透过塑料薄膜,其包含涂覆有折射率高的物质的无机颗粒

Water vapor permeable plastic film comprising inorganic particles coated
with a substance having high refractive index
摘要:
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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