Gas-permeable, waterproof film and process for its production

Details Gas-permeable, waterproof film and process for its production Gas-permeable, waterproof film and process for its production

1990-05-31

1992-01-07

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264 463, 264175, 264DIG62, B29C 4324

Patent

active

050789317

ABSTRACT:
A porous waterproof film having a superior gas-permeability and waterproofness, capable of being produced under simple processing conditions, by means of simple processing equipments and at cheap cost, having superior mechanical strengths and also suitable for disposable use applications and a process for producing the film are provided, which film is obtained by subjecting a thermoplastic resin composition film comprising a thermoplastic resin and a specified quantity of a filler based on the thermoplastic resin to calender processing.

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