Reinforced tubular polymeric membranes with improved...

Details Reinforced tubular polymeric membranes with improved... Reinforced tubular polymeric membranes with improved...

B - Operations, Transporting

01

D

B01D 69/10 (2006.01) B01D 69/08 (2006.01) D01F 1/08 (2006.01)

Patent

CA 2649204

A method of manufacturing a reinforced tubular membrane comprises the steps of manufacturing the tubular support from monofilament thread, impregnating the support with membrane dope and adjusting the inner and the outer diameter of the membrane. A coating apparatus comprises a casting bob and an orifice to adjust respectively the inner and outer diameter of the membrane. A tubular reinforced polymeric membrane comprises a tubular support and membrane substance. The tubular support is made of monofilament thread and has a sufficiently open structure (openings larger than 0.1 mm). Touching and/or engaging parts of the thread may be linked prior to impregnating the support with membrane dope. The support may comprise loops of the monofilament thread, which are also linked.

L'invention concerne un procédé de fabrication d'une membrane tubulaire renforcée comprenant les étapes de fabrication du support tubulaire à partir d'un fil monofilament, imprégnation du support avec une dope de membrane et réglage du diamètre interne et du diamètre externe de la membrane. Un appareil de revêtement comprend un chariot de coulée et un orifice pour régler respectivement le diamètre interne et externe de la membrane. Une membrane polymérique renforcée tubulaire comprend un support tubulaire et une substance de membrane. Le support tubulaire est fait d'un fil monofilament et a une structure suffisamment ouverte (ouvertures supérieures à 0,1 mm). Des parties d'accrochage et/ou de contact du fil peuvent être liées avant l'imprégnation du support avec la dope de membrane. Le support peut comprendre des boucles du fil monofilament, qui sont également liées.

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