Title:
MULTI-LAYER FILTER MATERIAL AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JPS5995915
Kind Code:
A
Abstract:
A multilayer filter material is described which comprises a coarse and a fine filter layer, while the individual filter layers contain a share of natural fibres and are interconnected with each other on the paper machine, without the use of a bonding agent, whereby the coarse filter layer consists of a mixture of natural and synthetic fibres and at least one part of said synthetic fibres is structured, and synthetic fibres lying on the surface of the coarse filter layer protrude from the plane of the filter material. Moreover a process for the manufacture of the multilayer filter material and its use is described. The inventive multilayer filter material is distinguished against comparable conventional filters by an increased service life and a better degree of separation.
Inventors:
GIYUNTAA OOMAN
BERUMAA AIGUNAA
HANSUKAARU SHIESUTAA
BERUMAA AIGUNAA
HANSUKAARU SHIESUTAA
Application Number:
JP19819083A
Publication Date:
June 02, 1984
Filing Date:
October 22, 1983
Export Citation:
Assignee:
GESSNER & CO GMBH
International Classes:
B01D39/14; B01D39/08; B01D39/16; B01D39/18; B01D39/20; D21D5/04; D21F11/04; D21F11/14; F02M35/024; (IPC1-7): B01D39/14; D21D5/00
Attorney, Agent or Firm:
Masatake Shiga