US1829983A - Textile material - Google Patents

Description

Patented Nov. 3, 1931' PATENT I OFFICE CAmIJiE DREYIUB, OI YORK, N. Y.

TEXTILE MATERIAL 1T0 Drawing.

This invention relates to the preparation of textile materials containing fibres that have a tendency to shrink when exposed to aqueous fluids wherein such tendency is con- 5 siderably reduced or entirely overcome.

An object of my invention is to prepare textile materials such as yarns or fabrics that contain fibres or yarns of materials that tend to shrink when exposed to water which textile materials have a reduced tendency to shrink. Other objects of my invention will appear from the following description.

-As iswell known, fabrics made of fibres such as wool, natural silk, reconstituted cel- 16 lulose, etc., shrink considerably when they are exposed to water or aqueous baths and then permitted to dry. This tendency to shrink is a source of great annoyance and inconvenience, since in the washing of such 2 fabrics, in the dyeing of the same, or in other necessary operations involving the treatment or exposure of the same to water or to aqueous solutions, this shrinking phenomenon takes place. Unless such fabrics are given a prehminary shrinking treatment prior to the formation of garments or other wearing apparel therefrom, the finished garments are liable to shrinkage upon subsequent washing or scouring and thus rendered useless forthe purpose to which they were intended.

I have found that if fibres of organic derivatives'of cellulose are incorporated with the fibres of the materials that tend to shrink, the tendency of the composite material to shrink is considerably diminished and in some cases completely overcome.

In accordance with. my invention I form textile materials of reduced tendency to shrink by associating together fibres or yarns made of materials that tend to shrink when exposed to water and yarns, fibres or filaments of organic derivatives of cellulose. The resulting textile material has little or no 45 tendency to shrink upon washing or other Application flled March 8, 1929. Serial No. 844,926.

treatment with aqueous liquids and drying the same.

, Of the yarns or fibres that tend to shrink that may be employed in my invention are those of cotton, wool, flax, natural silk, artificial silk or rayon made of reconstituted cellulose either by the viscose method, the cuprammonium method, the Ohardonet method 01', any other method. These materials preferably may be incorporated in the form of the fibres as such with the organic derivative of cellulose material.

An suitable organic derivative of cellulose may e employed such as organic esters of cellulose or cellulose ethers. Examples of 3 organic esters of cellulose are cellulose acetate, cellulose formate, cellulose propionate or cellulose butyrate, while examples of cellulose ethers are ethyl cellulose, methyl cellulose or benzyl cellulose.

This organic derivative of cellulose material may be in the form of continuous filaments as formed by extruding a solution of the same in a suitable solvent through orifices of a 'spinneret into a drying evaporative atmosphere or into a precipitating bath.

In one form of my invention, filaments of the organic derivatives of cellulose are cut into comparatively short staples of say 4 to 8" or more in length, and these staples mixed with the fibres of the other materials and the same spun to form yarn in any suitable "manner. The mixture of the staples of organic derivative yarns and fibres of the other materials of any suitable length, varying from 1 or more for cotton staples to any required length for any particular purpose, may be spun in any suitable manner.

Preferably the staples of organic derivatives of cellulose and cotton or wool staple are spun into yarn in the manner ordinarily employed for spinning yarn from cotton staples. If the mixture contains woolfibres the Bradford system of spinning wool yarn may be employed. Also the system of spinacetate material and 75% of cotton.

.ning spun silk may be employed if deslred.

In still another form of my invention, the filaments of the organic derivatives of cellulose after spinning are flufled into a voluminous form either by mechanical means or by the injection into the same of air or other gas, and this flufled material is associated either with the fibres or yarns of the shrinking material. Any other suitable manner ol associating the yarns, filaments or tibres of the organicderivatives of cellulose with the yarns or libres of the shrinking materials may be employed.

.-\s to the proportion of organic derivative of cellulose material with the materials that tend to shrink, any other suitable proportions may be employed and I have found that if such amounts of organic derivative material are employed that the same comprise from 10 to 90% of the total amount of material in the finished composite yarn, excellent results are obtained.

The composite yarnmade in accordance with my invention may be formed into any suitable woven, knitted or netted fabric, and such fabric may be made into any suitable garments of wearing apparel such as under wear. dresses, hose, etc.

As illustrative of the advantages accruing from my invention, the following test on a fabric made in accordance therewith is cited. A yarn formed by the spinning of staples formed of short lengths of filaments of cellulose acetate and cotton fibres is knitted into a fabric. The yarn consists of 25% cellulplse T is knitted .fabric, when washed and dried re peatedly, suffers a shrinkage in area of less than i%.

It is to be understood that the foregoing detailed description is given merely by way of illustration, and that many variations may be made therein without departing from the spirit of my invention.

Having described my invention, what I claim and desire to secure by Letters Patent 1. Textile materials having reduced tendency to shrink when treated with aqueous fluids, said textile materials comprising yarn spun from fibres of a material that tends to shrink when treated with aqueous fluids and relatively short fibres or filaments comprising organic derivatives of cellulose.-

2. Textile materials having reduced tendency to shrink when treated with aqueous fluids, said textile materials comprising yarn span from fibres of a material that tends to shrink when treated with aqueous fluids and relatively short fibres or filaments comprisin cellulose acetate.

3. Yarn having reduced tendency to shrink when treated with aqueous fluids,.said yarn comprising fibres of material that tend to its