Composite air-filtering material

Details Composite air-filtering material Composite air-filtering material

1991-07-18

1993-03-30

Cannon, James C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

28104, 28112, 55528, B32B 506, B32B 532, B01D 3916

Patent

active

051982943

ABSTRACT:
An air-filtering material exchangeably attached to a home-use or automobile air filter comprises a water jet type nonwoven fabric at an air outlet side and another type nonwoven fabric or fiber assembly at an air inlet side. These nonwoven fabric sheets are laminated on one another by needle punching. The water jet type nonwoven fabric is made from crowded finer fiber staples, and bits formed therein by penetration of needles of a needle punching machine may be stopped up by centripetally moving fiber staples surrounding the bits.

REFERENCES:
patent: 4145468 (1979-03-01), Mizoguchi et al.
patent: 4883709 (1989-11-01), Noyaki et al.

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