Hollow fibre membrane with compatible reinforcements
AssigneeBl Technologies, Inc.
InventorsSteven Kristian PEDERSEN, Pierre Lucien COTE, Jinhua BAI
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Abstract
A process of making a reinforced hollow fiber membrane comprises flowing a membrane dope through a casting head while drawing one or more yarns or tows of filaments through the casting head. The filaments are spread apart in the casting head, for example by forcing the yarns or tows around a bend or through a narrow gap in the casting head. The filaments are adapted to bond to the membrane dope or the membrane wall. A reinforced hollow fiber membrane comprises a plurality of filaments individually surrounded by, and bonded to, the membrane wall.
Claims21
A hollow fiber membrane comprising,
- a) a membrane wall formed from a membrane dope;
- and,
- b) one or more tows of filaments embedded in the membrane wall;
- wherein the filaments are made, at least in part, of a polymer that is adapted to bond to the membrane dope or the membrane wall.
A process of making a reinforced hollow fiber membrane comprising the steps of,
- a) flowing a membrane dope through a casting head;
- b) drawing one or more yarns or tows of filaments through the casting head;
- and,
- c) forcing the one or more yarns or tows around at least one bend in the casting head, or through at least one gap in the casting head that is narrower than a cylindrical bundle of the filaments.
A reinforced hollow fiber membrane comprising a membrane wall and one or more tows, each tow comprising a plurality of filaments individually surrounded by and bonded to the membrane wall.
Dependencies are inferred from the claim text.