Toray Industries, Inc.

Hiroshi Umetani

Masahiro Kimura

Hiroho Hirozawa

Takao Sasaki

Masakazu Koiwa

Kentaro Takagi

Yoshiki Okamoto

Hiroyuki Yamada

Shunsuke Tabayashi

Kentarou Takagi

Akira Katayama

Yoshie Marutani

The present invention provides a separation membrane and a separation membrane element capable of exhibiting a good water production performance even at a high temperature and also excellent handleability and quality. The separation membrane of the present invention includes a separation membrane main body having a feed-side face and a permeate-side face; and a permeate-side channel member fixed onto the permeate-side face of the separation membrane main body, and the permeate-side channel member includes polypropylene as a main component and satisfies the following requirements (a) to (c): (a) a softening point temperature is 60&#xb0; C. or higher; (b) a tensile elongation in a standard state is 10% or more; and (c) a yield point stress under a wet condition at 50&#xb0; C. is 2 MPa or more.

Separation membrane, sheet channel material, and separation membrane element

A spiral separation membrane element including a plurality of separation membrane pairs wound around the outer peripheral surface of a water collection pipe, wherein the plurality of separation membranes include at least two sets of separation membrane pairs in which two adjacent separation membranes are stacked such that the water supply sides of the separation membranes form opposing surfaces, and the water supply-side surfaces at the ends of separation membranes close to the water collection pipe and parallel to the lengthwise direction of the water collection pipe are sealed by a sealing material.

Spiral separation membrane element and method for producing same

Growing community of inventors

Shiga, Japan

Hiroshi Umetani