Patent ID: 9675937
Date: 2017-06-13
CPC Classifications: B01D,Y10T

Claim:
1. A permeate carrier for a spiral wound membrane comprising: a woven sheet having: a central portion having a front edge and a pair of side edges generally perpendicular to the front edge; and, one or more borders along one or both side edges of the central portion, wherein the central portion and the one or more borders having a series of raised ribs extending from a front surface of the permeate carrier, the raised ribs running generally parallel to the pair of side edges and defining permeate channels on the front surface, wherein the raised ribs in the central portion extend further from the front side than the raised ribs in the one or more borders such that the one or more borders are thinner than the central portion, and wherein a first spacing between the raised ribs in the central portion is substantially equal to a second spacing between the raised ribs in the one or more borders.