Patent ID: 6454942
Filing Date: 2002-09-24
Classification: B01D

Abstract:
A liquid separation membrane module comprising a semipermeable membrane receiving a pressure of a feed liquid, and a channel material arranged so as to support a back side of the semipermeable membrane, wherein:the channel material is a tricot knitted fabric knitted by a tricot knitting machine with two reeds and has a ground stitch portion and a convex portion; the tricot knitted fabric comprises a thermoplastic synthetic filament yarn that comprises a core/sheath type conjugated fiber having a high melting point polymer as a core component and a low melting point polymer belonging to a similar class of polymers as the high melting point polymer as a sheath component; thermoplastic synthetic filament yarns for forming the ground stitch portion and the convex portion having a substantially same fineness; and yarns in the tricot knitted fabric are bonded with one another by melt adhesion of the low melting point component to rigidity the entire knitted fabric.