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1. (WO1992009358) FLAT SHEET TYPE SEPARATING FILM LEAF
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009358 International Application No.: PCT/JP1991/001643
Publication Date: 11.06.1992 International Filing Date: 29.11.1991
IPC:
B01D 61/02 (2006.01) ,B01D 63/08 (2006.01) ,B01D 69/10 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02
Reverse osmosis; Hyperfiltration
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
63
Apparatus in general for separation processes using semi-permeable membranes
08
Flat membrane modules
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
69
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
10
Supported membranes; Membrane supports
Applicants:
DAICEL CHEMICAL INDUSTRIES, LTD. [JP/JP]; 1, Teppo-cho Sakai-shi Osaka 590, JP (AllExceptUS)
ISHII, Kiyoshi [JP/JP]; JP (UsOnly)
Inventors:
ISHII, Kiyoshi; JP
Agent:
FURUYA, Kaoru ; Nihonbashi TM Building 1-8-11, Nihonbashi-Horidomecho Chuo-ku Tokyo 103, JP
Priority Data:
2/33445330.11.1990JP
Title (EN) FLAT SHEET TYPE SEPARATING FILM LEAF
(FR) HARNAIS A PELLICULE SEPARATRICE DU TYPE A FEUILLE PLATE
Abstract:
(EN) A flat sheet type separating film leaf and a flat sheet type separating film element comprising the separating film leaf as a constituent element, wherein the leaf comprises a flat sheet type film support member consisting of an inner layer formed of a coarse construction and a surface layer formed of an unwoven fabric having a dense construction, the surface layer being formed integrally on both sides of the inner layer, and a semipermeable membrane covering both surfaces of the support member, in which polymer comprising the semipermeable membrane penetrates into gaps of the unwoven fabric on the surface of the support member to be combined therewith. This leaf can perform reverse osmosis cleaning on application of a low pressure.
(FR) Harnais à pellicule séparatrice du type à feuille plate et élément à pellicule séparatrice du type à feuille plate comprenant en tant qu'élément constitutif le harnais à pellicule séparatrice. Le harnais comprend un organe de support de pellicule du type à feuille plate composé d'une couche interne présentant une structure grossière et d'une couche de surface formée d'un tissu non tissé présentant une structure dense, la couche de surface étant solidaire des deux côtés de la couche interne. Le harnais comprend également une membrane semi-perméable recouvrant les deux surfaces de l'organe de support, où le polymère comprenant la membrane semi-perméable pénètre dans les interstices du tissu non tissé à la surface de l'organe de support, de manière à se combiner avec ce dernier. Lorsqu'on applique une faible pression, ce harnais peut effectuer un nettoyage par osmose inverse.
Designated States: JP, US
European Patent Office (DE, FR, GB)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP0513392