Method of producing plastic sheet with porous surface

Details Method of producing plastic sheet with porous surface Method of producing plastic sheet with porous surface

1987-02-05

1989-07-18

Anderson, Philip

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

264 41, 264 451, 264233, 264340, 264344, 521 63, 521 64, 521134, 521139, C08J 928

Patent

active

048494577

ABSTRACT:
A method of producing a plastic sheet with a porous surface layer suitable for use as, for example, a recording medium on which characters and images are printed by ink jet or thermal-transfer printing method. The method comprises preparing a solution by dissolving two or more kinds of plastics having low levels of miscibility to each other in a solvent, applying said solution to a substrate, passing said substrate with said solution applied thereto through a liquid which dissolves said solvent but does not dissolve said plastics thereby solidifying said plastics, and drying said substrate with the solidified plastic layer. Preferably, two or more kinds of plastics having low levels of miscibility to each other include mainly a material A which is vinyl chloride or its compolymer and a material B which is acrylonitrile or its copolymer.

REFERENCES:
patent: 4595503 (1986-06-01), Schindler et al.
patent: 4605526 (1986-08-01), Reynhout et al.

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