Filter material and cartridge filters made therefrom

Details Filter material and cartridge filters made therefrom Filter material and cartridge filters made therefrom

1997-09-02

1999-12-28

Weisberger, Richard

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Woven fabric

Strand material is composed of two or more polymeric...

428388, 428422, 428370, 57244, 57245, 57249, 442189, 442191, 442200, 442201, 442202, D02G 304, B01D 3908, B01D 3920

Patent

active

060081465

ABSTRACT:
An improved composite material of high temperature and chemical resistant material and polytetrafluoroethylene (PTFE) is provided. The composite material incorporates a coherent strand of commingled filaments of fiberglass and PTFE which is far more resistant to flex, abrasion, and chemical attack than conventional materials. Preferably filaments of expanded PTFE tow yarn and filaments of PTFE are combined through a process of air-jet texturing. Fabrics made from the composite fibers are combined with thermosetting phenolic or epoxy resins to produce pleated cartridge filter elements exhibiting superior performance in high temperature and corrosive environments.

REFERENCES:
patent: 3953566 (1976-04-01), Gore
patent: 4878930 (1989-11-01), Manniso et al.
patent: 4985296 (1991-01-01), Mortimer, Jr.
patent: 5207812 (1993-05-01), Tronto et al.
patent: 5456983 (1995-10-01), Sassa
patent: 5536290 (1996-07-01), Stark et al.
patent: 5549966 (1996-08-01), Sassa

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