US1633160A - Finished fabric and process of making same - Google Patents

Description

Patented 21,1927.

UNITED STATES 1,633,160 PATENT OFFICE.

JOSEPH BENNETT, OI NORTH ADAIS, USSAGHUSETTS, ASSIGHOB TO CONSOLIDATED 'rnxmn CORPORATION, O] m YORK, I. Y., A CORPORATION OF DELAWARE l fe Drawing.

This invention relates to artificial fibres and more particularly to the specialized treatment thereof for the purpose of improving the appearance. It is well known that regenerated cellulose fibres, When they are made from -xanthates or nitrates or from other intermediates, possess a fineness of fibre,a strength and softnesswhich is highly desirable, 'hut they also possess. a high lustre whichfor many purposes limits their application unthe-resist is placed upon those portions of.

desirably. I v

One of the objects of this invention is, therefore, to remove wholly or in part the lustre from such fibres, while retaining their other desirable properties.

' It has heretofore been customary, moreover, to manufacture fabrics from comb1na-' tions of lustrous and lustreless fibres, in or.-

der to obtain desirable pattern effects. Such manufacture, however, has r uired the use of a Jacquard loom, with all t e consequent diflieulties and expense.

It is a further-object of this invention to.

produce a process in accordance with which the lustre canbe removed in localized areas from the finished fabric, whereby the pattern may be produced by printing rather than by weaving.

of the character described, which will be simple and efiicient in operation and which will'leave the fibres possessed of all their desirable properties and to produce a prod- In accordance with this invention it has ybeen discovered that when the regenerated cellulose fibre is subjected to the action of a strong alkali, such for example as sodium hydrate, for a riod, that'the lustre is completely remov This may in art be due to a hydration of the surface 0 iii-- dividual fibres, or it maybe a change in the.

upon washed to remove the gum and neutral- It is a further object to produce a process: I

we the excess alkali. Either of the above uct which is highly ornamental and durable.

.- :nr. snare um ror lame m Application filed Angaat as, me. lerlalle. 181,800.

will remove the remaining alkali-by washb ghelther with water or with a slightly acid a r Y When specifically applied to printing, the process is'conducted as follows The pattern is printed upon the fabric with. a resist paste, as for example, a mixture of British gum and magnesium sul-' phate it bein understood, of course, that according to t e general principles of resist prmtmg,'the pattern is in reverse, that is,

the fabric which are to remain lustrous.

When the resist aste has become dried, the cloth is passed t ough a bath of sodium hydrate of a strength and'temperature dependent upon the we' ht and thickness of the cloth and the e ect After which, the cloth is passed through a washing bath and preferably also a neutralizing bath such, for example,- as a weak acid to eliminate the excess alkali.

As an alternative method, I may substitute for the resist paste a pasteincluding. a caustic soda mixed, for example,'with gum tra canth; This, when printed upon the fabric and allowed to remain during'a light g operation, is enough'to'remove the lustre from the fibre. "The fabric is thereprocesses will produce a pattern effect upon the cloth completely devoid of lustre at the spots acted upon by the reagents, butfwithout affecting the lustre of the remaining porrtions-of the goods.

Since certain changes may be made in ca g out the above process and'inithe 'pro not, and modifications effected in the the generic and specific features of-theinvention-herein described, and all statements of the scope of the invention which, asra matter of anguage,-might be said to fall therebetween.

I claim:

l. The procem ofornamenting fabric of 10 regenerated cellulose, which comprises subjecting the same to local treatment in pattern of caustic alkali of delustering strength.

2. The process of delusterizing the regenerated cellulose fibre, which comprises subjecting the same to theaction of analkali of delustering strength and subsequently neutralizing the remaining alkali.

3. The method of delusterizing regenerated cellulose fibre, which comprises washing the same in an alkaline bath of delustering strength, subsequently removing from the bath and neutralizing the excess alkali.

4. The process of ornamenting the re enerated cellulose, printing thereon wit a paste in the desired pattern and subsequently subjecting said fabric to a bath, said paste or said bath including a caustic alkali.

5. The process of ornamentinga fabric of regenerated cellulose, which comprises printing thereon with a paste, including strong caustic, and thereafter removing said paste and neutralizing the remaining caustic.

6. The process of imposing a figure on cellulose fabrics which comprises forming a lustrous cellulose substitution product on localized areas.

, 7. The process of delustering regenerated cellulose fabrics, which comprises printing upon the fabric a substance capable of altering the surface of. the fibres to remove gloss.

8. A fabric of regenerated cellulose fibre havin localized area of lustreless surface.

9. X fabric ofregenerated cellulose having localized lustreless areas formed by localized surface treatment of the fabric.

10. A fabric, individual fibres of which have an interior of reformed cellulose and a i lustreless exterior of a cellulose substitution product. 4

11. The process of ornamenting a regenerated cellulose fabric, which comprises forming thereon a pattern of areas of glossed.

and unglossed fibres irrespective of the weave.

12. The process of ornamenting a regenerated cellulose fabric, which comprises forming thereon a pattern of unglossed cellulose substitution product irrespective of the weave.

In testimony whereof I aflix my signature.

JOSEPH BENNETT.