Non-porous, breathable and waterproof transparent plastic film and method for manufacturing the same

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United States of America Patent

PATENT NO 12104027
APP PUB NO 20240076460A1
SERIAL NO

17888501

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Abstract

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The present invention provides a non-porous, breathable and waterproof transparent plastic film on a plastic substrate and methods for fabricating the same. The film includes a thermoplastic polyester resin, an amphiphilic modifier having a hydrophilic segment that acts as a channel for water vapor transmission through the film connected to a hydrophobic segment that anchors the amphiphilic modifier to a portion of the polyurethane base resin and a compatibilizer. The resultant non-porous, breathable and waterproof transparent plastic film has a water vapor transmission rate (WVTR) or breathability of not less than 250 g/m2/24 hr according to ASTM E96B, and having at least 90% of the transmittance. They are also resistant to liquid penetration and micro-contaminants such as bacteria and virus, making them suitable for broad applications in medical, healthcare and food packaging industries.

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Patent Owner(s)

Patent OwnerAddress
NANO AND ADVANCED MATERIALS INSTITUTE LIMITEDHONG KONG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Yueying Hong Kong, HK 17 13
Liu, Xianqiao Hong Kong, HK 14 13
Ng, Yik Wong Hong Kong, HK 2 0
Yang, Fengyu Hong Kong, HK 6 0

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