Filter medium

Details Filter medium Filter medium

2004-03-25

2008-11-18

Singh, Arti (Department: 1794)

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

Woven fabric

Woven fabric including an additional woven fabric layer

C442S002000, C442S005000, C442S136000, C442S164000, C442S414000, C055S302000, C055S378000, C055S493000, C055S521000, C055S528000, C095S278000

Reexamination Certificate

active

07452831

ABSTRACT:
The filter fabric containing polyphenylene sulfide fibers, characterized in that the following (1) and/or (2) is satisfied is used to provide a filter fabric and a bag filter composed of the filter fabric excellent in dust-collecting efficiency and high in mechanical strength:(1) Containing at least two webs, one of which on the dust side contains 50 wt % or more of heat resistant fibers with a fiber, diameter of 15 μm or less, while the other web on the clean side contains 50 wt % or more of heat resistant fibers with a fiber diameter of 20 μm or more(2) Containing a web containing polyphenylene sulfide staple fibers with their fineness kept in a range from 1 to 3 dtex and fluorine-based staple fibers with their fineness kept in a range from 2 to 4 dtex.

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patent: 10-165729 (1998-06-01), None
patent: 2000-61224 (2000-02-01), None
patent: 2000-140530 (2000-05-01), None
patent: 2000-334228 (2000-12-01), None
patent: 2001-276528 (2001-10-01), None
patent: 2002-204909 (2002-07-01), None

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