US 4,562,097 AGranted

Process of treating fabrics with foam

AssigneeUnion Carbide Corporation

InventorsAndrew T. Walter, George M. Bryant, Ronald L. Readshaw

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Abstract

A continuous process for the application of a textile treating composition in the form of a froth or foam to a substrate such as textiles. The process enables the application in a uniform manner of any foamable functional composition that can be used in the treatment of a textile fabric to improve its properties. In the process of foamed functional treating composition is continuously conveyed to the applicator nozzle, the substrate is continuously passed across and in contact with the applicator nozzle so as to simultaneously contact said substrate with the foamed composition and the applicator nozzle at a rate such that a predetermined controlled amount of the foamed functional treating composition is uniformly applied to the surface of the substrate and the foam immediately breaks on contact with the substrate and is readily absorbed. The process of this invention generally leaves the textile material essentially dry to the touch and thus requires less energy consumption in drying and further treatment of the textile.

Claims6

Dependent claims

In a method of treating a porous substrate by the application to at least one surface thereof of at least one functional treating composition, the steps of:

(a) foaming said functional treating composition to produce a semi-stable foam having a foam density from 0.005 to 0.6 gram per cc, an average bubble size of from 0.05 to 0.5 millimeters in diameter, and a foam half life of 1 to 60 minutes;
(b) continuously conveying the foamed functional treating composition to an applicator nozzle;
(c) continuously conveying the substrate across and in contact with said applicator nozzle so as to simultaneously contact said substrate with said foamed functional treating composition and said applicator nozzle at a rate such that uniform application of said functional treating composition on said substrate is achieved;
(d) depositing a predetermined, controlled amount of said foamed functional treating composition on the surface of said substrate at said applicator nozzle, wheron said foam immediately breaks contact and is readily absorbed thereby to leave the surface of said substrate essentially dry to the touch;
and
(e) recovering the treated substrate;
wherein the functional treating composition comprises from 5 to 75 weight percent of functional chemical, from 0.2 to 5 weight percent of foaming agent, from 0 to 5 weight percent of wetting agent, and water making up the balance thereof.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/556,573Filed 30 Nov 1983 · continuation in part
Priority: 25 Mar 1976
Granted: 31 Dec 1985
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

D06B 19/0094
Using a short bath ratio liquor: as a foam
D06M 23/04
Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process: processes in which the…
D06P 1/965
Dyeing characterised by a short bath ratio: foam dyeing
D06B
Treating textile materials using liquids, gases or vapours