LAMINATED FILTER MEDIUM, METHOD OF MAKING SAID MEDIUM, AND FILTER USING SAID MEDIUM

Title:

LAMINATED FILTER MEDIUM, METHOD OF MAKING SAID MEDIUM, AND FILTER USING SAID MEDIUM

Document Type and Number:

WIPO Patent Application WO/1993/006912

Kind Code:

A1

Abstract:

A laminated filter medium for removing, with high precision, foreign matters contained in liquid or gas; a method of making said medium; and a filter using said medium. On the rugged surface of a supporting member (2) composed of porous metal, a particle layer (3) is formed when said support member (2) is steeped into suspension (15) having suspending particles and is subjected to vacuum deposition without the use of binding material, thereby forming a laminated filter medium (1). The method of making said material comprises a first step of preparing suspension (15) in which particles finer in average diameter than the small pore of the supporting member (2) are suspended and dispersed without the use of binding material, and a second step of dipping the supporting member (2) into said suspension (15) for vacuum depositing. In the filter (F), a metallic setting part (24), in contact with the end of said filter medium (1) to fix said medium (1), of a support metal (20) is welded to said end from the other side of said setting part (24).

Inventors:

ISHIBE HIDEOMI (JP)

Application Number:

PCT/JP1992/001323

Publication Date:

April 15, 1993

Filing Date:

October 05, 1992

Export Citation:

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Assignee:

NIPPON SEISEN CO LTD (JP)

International Classes:

B01D29/15; B01D39/20; B01D46/00; B01D46/24; (IPC1-7): B01D39/14; B01D39/20

Foreign References:

JPS6458305A	1989-03-06
JPS6366566B2	1988-12-21
JPH01139118A	1989-05-31
JPH0195229U	1989-06-23

Other References: