Process for manufacturing spunbonded webs

Details Process for manufacturing spunbonded webs Process for manufacturing spunbonded webs

D - Textiles, Paper

04

H

28/1, 18/507

D04H 3/16 (2006.01) D04H 1/56 (2006.01)

Patent

CA 1278659

ABSTRACT OF THE DISCLOSURE: A process is disclosed for manufacturing spunbonded webs from spun fibers or filaments or both by blow-spinning a melt or solution of a spinnable polymeric material by means of a die head with die openings, and a collector. In the area between the die heads and the collector, crimped monofilament or crimped filament yarn or a plurality thereof having a modulus of at least 1 cN/dtex are applied or introduced under tension to or into the mass of the spun fibers or filaments forming the spunbonded webs by blowing using filament or filament yarn feed nozzles. The crimped monofilament or filament yarn product added in the process has the main effect of imparting to the spunbonded webs a low and uniform density and an improved gas, vapor and liquid permeability. Elasticity is also improved.

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