Porous backing material for semipermeable membrane cartridges
Abstract
Abstract A BACKING MATERIAL COMPRISING TWO LAYERS OF RIBBED FABRIC ARRANGED IN RIB FACE TO RIB FACE RELATIONSHIP WITH THE RIBS SUBSTANTIALLY PARALLEL IN THE DIRECTION OF SPIRAL WINDING, THE WIDTH OF THE GROOVES IN EACH LAYER OF RIBBED FABRIC BEING LESS THAN THE WIDTH OF THE RIBS IN THE OPPOSITE FABRIC LAYER, IS EMPLOYED FOR TRANSFER OF PRODUCT LIQUID TO A CENTRAL COLLECTING TUBE IN A SPIRAL WOUND CARTRIDGE FOR USE IN REVERSE OSMOSIS OR ULTRAFILTRATION APPARATUS. THIS PROVIDES EXCELLENT FLUID TRANSFER THROUGH THE LINGITUDINAL GROOVES IN THE RIBBED FABRIC LAYERS; THE GREATER WIDTH OF THE RIBS PREVENTS THESE FROM INTRUDING INTO THE GROOVES OF THE OPPOSITE FABRIC LAYER AND RESTRICTING FLOW. PREFERABLY THE RIBBED FABRIC IS OF TRICOT WOVEN FROM A SYNTHETIC FIBER AND IMPREGNATED WITH A REINFORCING RESIN, WITH GROOVES AND RIBS IN EACH FABRIC LAYER BEING OF SUBSTANTIALLY THE SAME DIMENSIONS AS THE RESPECTIVE GROOVES AND RIBS IN THE OTHER FABRIC LAYER.
Inventors
- 👤 D Bray
Bibliographic Details
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