US1487807A - Hollow artificial textile manufacturing process - Google Patents

Description

Patented Mar. 25, 1%24.

team? PAINT @FIFEQE.

JULES ROUSSET,

0F NOGENT-SUR-MARNE, FRANCE, ASSIGNOR T0 soom'rn' ALSA, scorers ANONYME, or BASELSWITZERLAND.

HOLLOW ARTIFICIAL TEXTILE MANUFACTURING PROCESS.

No Drawing.

To all whom it may concern: I

Be it known that I, Jones Roussnr, citizen of the Republic of France, and resident of Nogent-sur-Marne, Seine, France (post-' office address 20, rue des-Defenseurs de Verdun). have invented a new and useful Hollow Artificial Textile Manufacturing Proccss. which improvements are fully set forth in the following specification.

Certain hollow artificial textiles are already known which are obtained by spinning an emulsion consisting of a spinnable liquid and of a neutral gas. Among the spinnable liquids which may be used are cellulosic solutions such as viscose, cupra-ammonium cellulose and cellulose-acetate, and other substances such as collodion, gelatin, etc.

In practice. however, the results obtained from the aforesaid process are incomplete.

The object of my invention is to provide an improved process formanufacturing hollow artificial' textile's"which does not start,

as has been the ease-heretofore, with an emulsion of'a'spi nabl'e'liquid and a neutral O'as. a My process "consists'in dissolving air or any other gas in the liquid to be spun, maintaining the said gas in a dissolved state by keeping the solution under sufficient pressure, and allowing the said gas to appear in the form of bubbles within the textile article due to expansion of the liquid effected before the article leaves the spinning machine or draw-plate, or quite naturally spontaneously on its issue therefrom.

Appearance of the dissolved gas may also be caused by heat-action before or after the article issues from the spinning machine.

It should be clearly understood that, in

- practice, expansion and heat actions may be comlbined either simultaneously or successive As a modification of the afore-described process, I may incorporate with the solution to be spun a body calculated to cause the formation of gaseous bubbles within the thread, after the latter has left the spinning machine, or draw-plate, such formation of gas bubbles being induced either by chemical or by thermic action.

Application filed November 15, 1921. Serial in. 515,411.

bath gaseous bubbles of various appearances according to operative conditions, the formation of the bubbles being due to the chemical reaction between the carbonate and the coagulating bath.

Obviously, allmliscarbonate is quoted only as an example, and I reserve the privilege to use any body or bodies endowed with the property of producing under chemical action the gaseous bubbles required to form a hollow artificial textile.

As an instance of production of gaseous bubbles by thermic action, I would suggest introducing into the solution to be spun a body that will not give off vapours when cold, but will give off vapours when hot, say gasoline, carbon disulfide, etc.

Having now particularly described and ascertained the nature of my said invention, and the manner in which the same is to be performed. what I claim is:

1. In the process of manufacturing hollow, artificial textile articles, the steps of dissolving a fluid in a spinnable viscous solution, subjecting said solution to sufficient pressure to maintain the fluid in a dissolved state therein, and producing the formation of bubbles from the fluid at the proper time.

2. In the process of mainifzu-turing hollow, artificial textile articles, the steps of causing air to be dissolved in a spinnable viscous solution, subjecting said solution to sufficient pressure to maintain the air in a dissolved state therein, and producing the formation of air bubbles at the proper moment by expansion of the said air.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

JULES ROUSSET. IVitnesses FERNAND DUFOUR, CHARLES LoN Lorsnn.