FABRIC HYDROENHANCEMENT METHOD AND EQUIPMENT FOR IMPROVED EFFICIENCY

WIPO Patent Application WO1999029951

A3

Improvements in hydroenhancement efficiency are obtained by operating a manifold in relative movement to fabric transported under the manifold so as to deliver a low energy to the fabric per pass in multiple passes on the fabric. This results in greater enhancement efficiency and reduction in wasted energy, and also improves fabric coverage and reduces fabric shrinkage. The low energy-per-pass, multiple-pass approach can be implemented with improved hydroenhancing equipment of reduced equipment size and cost which simulate multiple passes on the fabric. In one embodiment, a jigging hydroenhancing equipment transports the fabric (12) back and forth under a stationary manifold (60a, 60b) between a pair of unwind/windup reels (64, 66) to simulate multiple passes on the fabric. Other embodiments employ a manifold or manifold system that is reciprocated (50), oscillated (50a, 50b; 70a, 70b), or rotated (82) to simulate multiple passes on the fabric. Another variation for improving hydroenhancement includes angling the manifold (30a, 30b) at a diagonal to the fabric.

GREENWAY J MICHAEL
LAWRENCE JACKSON
STERNLIEB HERSCHEL
TY FREDERICK
MALANEY FRANK E

PCT/US1998/025749

October 28, 1999

December 04, 1998

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BBA NONWOVENS SIMPSONVILLE INC (US)

D04H1/46; D06C29/00; (IPC1-7): D04H1/46

US5791028A	1998-08-11
US5238644A	1993-08-24
US5136761A	1992-08-11
US3613999A	1971-10-19
US5042722A	1991-08-27
US5692278A	1997-12-02
US3917785A	1975-11-04

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