A process for producing a tubular membrane assembly

Details A process for producing a tubular membrane assembly A process for producing a tubular membrane assembly

B - Operations, Transporting

01

D

B01D 67/00 (2006.01) B01D 69/10 (2006.01) B29C 53/60 (2006.01) B29C 65/08 (2006.01)

Patent

CA 2219438

The invention provides a process for producing a tubular membrane assembly comprising helically winding at least one strip of fibrous material on a mandrel to produce at least a single ply tubular support member for a semi-permeable membrane, characterized by passing the strip through a heated section of the mandrel during the helical winding thereof to flatten and smooth fibers protruding along the cross-sectional width of the strip, whereby a tube with a smooth inner bore along its entire length is formed.

Processus de fabrication d'un ensemble membrane tubulaire comprenant l'enroulage en hélice d'au moins une bande de matière fibreuse sur un mandrin, afin de produire au moins un élément de support tubulaire en une couche pour membrane semi-perméable. Ce processus se caractérise par le fait que l'on introduit la bande dans une section chauffée du mandrin durant l'enroulage, afin d'aplanir et de lisser les fibres saillantes sur la largeur en coupe transversale de la bande. Un tube présentant un alésage lisse sur tout son long est ainsi formé.

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