Process and device for forming non-woven fabrics

Details Process and device for forming non-woven fabrics Process and device for forming non-woven fabrics

D - Textiles, Paper

04

H

28/14

D04H 3/10 (2006.01) D04H 1/46 (2006.01)

Patent

CA 1084676

PROCESS AND DEVICE FOR FORMING NON-WOVEN FABRICS ABSTRACT OF THE DISCLOSURE A process and device useful therein for hydraulic- ally entangling the fibers in a fiber batt to form a fiber- entangled base sheet for a non-woven fabric, and a uniformly and lightly fiber-entangled, base sheet formed by the process. The process includes applying at least one liquid curtain against the fiber batt while it is supported on a moving, apertured backing screen. The liquid curtain is uniform in width throughout its length and substantially non-diverging as it is delivered from a source of liquid under a pressure sufficient to effect entanglement of the fibers in the batt. Preferably, the pressure is at least about 200 p.s.i.g., and the maximum divergence of the curtain is about 4 degrees. The device for applying the liquid curtain includes first and second members and means for securing the members together to form a chamber therebetween in which the liquid is contained and to form a slot in communication from the chamber to the exterior of the device. The slot has a substantially uniform width along its length and preferably also a uniform depth. The securing means are adjustable, so that the width of the slot can be varied, but, once the members are secured together, the width of the slot remains constant as the curtain is delivered from the chamber, through the slot, and against the fiber batt. The uniformly and lightly fiber-entangled, base sheet is non-apertured and non-streaked and has an entanglement frequency of less than about 20, an entanglement completeness of less than about 0.5 and an internal bond value of less than about 0.1.

282567

Affiliated with

Also associated with

Rating

Process and device for forming non-woven fabrics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and device for forming non-woven fabrics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for forming non-woven fabrics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-919096