Process for the production of a cotton-based, washable nonwoven

Details Process for the production of a cotton-based, washable nonwoven Process for the production of a cotton-based, washable nonwoven

1992-07-10

1994-03-22

Willis, Jr., Prince

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Cellulose fibers

8196, 8120, 81276, 811561, 8181, 81157, 4273899, 427386, 427428, 427177, D06M 1559, D06M 1555

Patent

active

052959970

ABSTRACT:
A process for the production of a spunlace nonwoven cloth based on cotton fibers, which includes continuously advancing the cloth (1) based on cotton fibers, interlacing (2, 3) those fibers with the aid of a plurality of water jets under pressure, drying (8) the interlaced cloth, and, finally, taking delivery (10) of the spunlace cloth (9) thus obtained. After interlacing (2, 3) and before drying (8) the free water contained in the interlaced cloth (4) is drained (5), then the drained cloth is impregnated (6) using an aqueous solution of a polyamide-amine-epichlorohydrin (PAE) resin in an amount, measured as solids, of 0.2% to 1% of the weight of the cotton fibers, and after having expelled the excess solution, the impregnated cloth (7) is dried (8) at a temperature sufficient to at least trigger the cross-linking of the PAE resin deposited.

REFERENCES:
patent: 3214819 (1965-11-01), Guerin
patent: 3305493 (1967-02-01), Emmons
patent: 3508308 (1970-04-01), Bunting et al.
patent: 4570311 (1986-02-01), Kawamura et al.
patent: 4959894 (1990-10-01), Jeffers et al.
patent: 5071681 (1991-12-01), Manning et al.

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