Smooth-surfaced nonwoven fabric

Details Smooth-surfaced nonwoven fabric Smooth-surfaced nonwoven fabric

1977-12-01

1979-12-25

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

210500M, 210507, 427194, 428297, 428332, 428303, 428340, 428402, 428903, B32B 516, B32B 2702

Patent

active

041806115

ABSTRACT:
A nonwoven fabric having a smooth surface, especially for use as support material for semipermeable membranes, comprising a support mat into which at least one surface thereof, an open-structured, continuous covering layer of fine, thermoplastic particles is calendered.

REFERENCES:
patent: 2992149 (1961-07-01), Drelich
patent: 3102836 (1963-09-01), Griswold
patent: 3503784 (1970-03-01), Morita
patent: 3762566 (1973-10-01), Del Pico
patent: 3837995 (1974-09-01), Floden

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