Pleatable nonwoven composite article for gas filter media

Details Pleatable nonwoven composite article for gas filter media Pleatable nonwoven composite article for gas filter media

1997-05-23

1998-10-13

Woo, Jay H.

Gas separation

Combined or convertible

In motor vehicle

55521, 55524, 55527, 55528, 55DIG45, B32B 710

Patent

active

058206450

ABSTRACT:
A composite nonwoven fabric suitable for undergoing pleating to form filtration media includes two nonwoven fabric layers which are adhesively bonded. One layer is an air permeable nonwoven web of continuous filaments. A high loft nonwoven batt of staple fibers is laminated to the nonwoven web layer. The nonwoven batt has a gradient fiber density and includes a first layer of relatively low denier fibers and a second layer of relatively higher denier fibers.

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