Porous sheets and method of manufacture

Details Porous sheets and method of manufacture Porous sheets and method of manufacture

1979-02-15

1981-03-17

Anderson, Philip

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 49, 264127, 264DIG2, 521 65, 521145, 521188, 521919, B29D 2700

Patent

active

042568455

ABSTRACT:
A porous thermoplastic sheet is formed by adding a material to a polymer latex to passivate the aqueous phase of the latex. An additional material of a preselected particle size, corresponding to the desired pore size of the final product is then added. The latex composition is gelled and is then formed into a sheet. The sheet is dried and cured or sintered and the solubles are extracted therefrom with a solvent. A preferred polymer latex is PTFE.

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