Awa Paper Mfg. Co., Ltd.

Nitto-denko Corporation

Japan Exlan Company Limited

Yoshifumi Kusaka

Akihiro Okubo

Yoshitsugu Hama

Hideo Naka

Koichi Nakagawa

Daisuke Fujieda

Daisuke Nii

A filtering apparatus that sucks liquid in hollow portions () of the filtering elements () via suction pipes () so that liquid passes the filtering elements and is filtered. Each suction pipe has suction holes () connected to the hollow portions. The suction pipes are inserted into through holes () of the filtering elements. The filtering elements are arranged side by side and connected to the suction pipes. A ring-shaped packing is interposed between the filtering elements, and water-tightly seals the clearance between the filtering element and the suction pipe. The through holes are arranged at peripheral locations of each filtering element. The suction pipes are inserted into the through holes of each filtering element. The filtering elements are held at the peripheral locations by the suction pipes.

Filtering apparatus

Segregating membrane supporting material is a three-dimensional assembly of fibers thermo-compressed into non-woven fabric, and the non-woven fabric fibers are joined together in sheet form. This segregating membrane supporting material is non-woven fabric, including at least 10 weight % polyacrylonitrile-based synthetic fibers, which is thermo-compressed to give an overall bulk density 40% to 75% of the density of the fibers which make up the non-woven fabric.

Laminated material of segregating membrane and segregating membrane supporting material, and its method of manufacture

A semipermeable membrane support includes, a non-woven fabric including main fiber and binder fiber, both of which are formed of synthetic resin fine fiber, the non-woven fabric being manufactured by heating and pressing after paper making, wherein the semipermeable membrane support has a ratio of a tensile strength in a paper feeding direction to that in a width direction of 2:1 to 1:1.

Semipermeable membrane support and process of preparation thereof

Growing community of inventors

Tokushima, Japan

Yoshifumi Kusaka