Drum coagulator for preparing microporous membranes

Details Drum coagulator for preparing microporous membranes Drum coagulator for preparing microporous membranes

1983-02-11

1986-07-08

Lusignan, Michael R.

Coating apparatus

With stretching or tensioning

Transverse

291211, 118118, 118419, 118420, 21050042, 427173, 427176, 427245, B05C 1100, B05C 1102, B05C 312

Patent

active

045986622

ABSTRACT:
A process and device for producing a flexible layered article suitable for use in water proof garments wherein one of said layers is a microporous membrane material produced from the "solvent non-solvent" method wherein a fabric backing coated with the membrane material dissolved in a solvent is contacted with a drum having gripping means offering substantial resistance to the natural tendency of the coated fabric to curl when immersed in a non-solvent for the polymer material.

REFERENCES:
patent: 1915128 (1933-06-01), Keltie
patent: 3449156 (1969-06-01), Brown
patent: 3642668 (1972-02-01), Bailey et al.
patent: 3808033 (1974-04-01), Mayhew
patent: 3829360 (1974-08-01), Holz
patent: 3912834 (1975-10-01), Imai et al.
patent: 4052521 (1977-10-01), Ferrari
patent: 4193178 (1980-03-01), McArthur et al.
patent: 4194041 (1980-03-01), Gore et al.
patent: 4203848 (1980-05-01), Grandine, III

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