SPIRAL SEPARATION MEMBRANE ELEMENT, POROUS HOLLOW TUBE AND PRODUCTION METHOD FOR SAME

WIPO Patent Application WO/2011/158518

A1

The disclosed spiral separation membrane element is provided with a porous hollow tube (1) having a plurality of through-holes (2) leading from the outer peripheral surface to the inner peripheral surface thereof, and a laminated body which is wound around the perimeter of the porous hollow tube (1), and which includes a separation membrane and flow channel material. Non-penetrating concave sections (3) are provided in a region on the outer peripheral surface of the porous hollow tube (1) which is covered by the laminate body. In order for permeated liquid to flow into the non-penetrating concave sections (3), the permeated liquid is able to flow smoothly within the non-penetrating concave sections (3), and the resistance to the permeated liquid can be reduced. Therefore, pressure loss is reduced, and the permeated liquid amount can be increased.

UDA, Yasuhiro (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
宇田　康弘 (〒80 大阪府茨木市下穂積１丁目１番２号日東電工株式会社内 Osaka, 〒5678680, JP)
HAMADA, Toshimitsu (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)

JP2011/003485

December 22, 2011

June 17, 2011

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NITTO DENKO CORPORATION (1-2 Shimohozumi 1-chome, Ibaraki-shi Osaka, 80, 〒5678680, JP)
日東電工株式会社 (〒80 大阪府茨木市下穂積１丁目１番２号 Osaka, 〒5678680, JP)
UDA, Yasuhiro (1-2 Shimohozumi 1-chome, Ibaraki-sh, Osaka 80, 〒5678680, JP)
宇田　康弘 (〒80 大阪府茨木市下穂積１丁目１番２号日東電工株式会社内 Osaka, 〒5678680, JP)

B01D63/00; B01D63/10; B29C33/42; B29C45/26

KAMADA, Koichi et al. (8th Fl, UMEDA PLAZA BLDG. ANNEX 4-3-25, Nishitenma, Kita-ku, Osaka-sh, Osaka 47, 〒5300047, JP)

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