Albany International Corporation

Robert D Burchesky

Myron J Coplan

Robert E Sebring

Apparatus and a process for coating continuous lengths of filaments are described. The apparatus includes a tubular vessel for applying a fluid coating to a plurality of traveling filaments which are then separated and passed through drying and curing zones in separate and appropriate ovens. The method of the invention, carried out in the apparatus of the invention, is particularly useful to apply special coatings to continuous lengths of hollow fibers to prepare composite hollow fibers useful as separatory membranes.

Process and device for applying, drying and curing a coating on filaments

A hollow filament separatory module utilizing an annulus of semi-permeable hollow filaments with open ends encased in a potting compound and a collection chamber communicating with said open ends adjacent the potting compound with access surface means formed in the potting compound wherein the open ends appear, the sum of the area of said access surface means when projected upon a plane perpendicular to the direction of internal pressure forces against the potting compound being less than 50% of the cross-section of the non access portions of said compound parallel to said plane.

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Dedham, MA, United States of America

Robert D Burchesky