US1476226A - Waterproofing process for textile fabrics, paper, and such materials - Google Patents

Description

Dec. 4,1923. 1,476,226

. R. A. GRlMOlN-SANSON WATERPROOFING PROCESS FOR TEXTILE FABRICS, PAPER, AND SUCH MATERIALS Filed Nov. 26 1921 ATTORNEY Patented Dec. 4, 1923..

UNITED STATES PATENT OFFICE.

BAOUL ADRIEN GRIHOIN-SANSON, OF OISSEL, FRANCE.

WATERPROOFING PROCESS FOR TEXTILE FABRICS, PAPER, AND SUCH MATERIALS.

Application filed November 26, 1921.

To all whom it may concern:

Be it known that I, RAoUL AnRreN GRI- MOIN-SANSON, citizen of the Republic of France, and resident of Oissel, France (postoflice address Chateau dOissel), have invented a new and useful Waterproofing Process for Textile Fabrics, Paper, and Such Materials, which improvements are fully set forth in the following specification.

Textile fabric waterproofing processes are already known according to which the rubbered surface to be waterproofed is sprinkled with cork. But the cork penetrates only slightly into the india-rubber, the result be ing that the coating, while resistant at the surface frequently becomes spoilt or altered inside. 1

Attempts have been made to remedy this drawback by applying several successive layers or coatings of cork, but it has been found that, after the first application of cork, the cork coating or layer cannot be coated with rubber.

The object of my invention is to provide a waterproofing process, consisting in coating textile fabrics, paper, and such materials, with a number of indie-rubber layers success'ivel covered over with a layer or coating of pow cred wrk, the result being to make the fabric or other material absolutely hot-washable and hot ironable, just like ordinary linen.

To the aforesaid advantages are added great strength, extreme lightness and small cost.

My invention is essentially characterized by a special treatment for and of the cork powder to be sprinkled over the rubber layers or coatings.

The cork owder collected in bottle-cork factories is amp and sticky.

According to the process which is the object of my invention and in order to free the said powder from impurities which make it unsuitable for coating it is soaked for about 24; hours in the ollowing mixture which should previously have been subjected to a careful and thorough mixing:

Water 100 grams.

Carbonate of soda 5 grams. a

(It should be understood, of course, that theabove proportions are given only as an example).

Ar having allowed the powder'to soak for 24 hours, it has to be completely dried by i a giilied layer of cork;

Serial No. 517,926.

aerating it with air heated up to (say) degrees centigrade.

fter complete drying, an operation which requires about two hours, the said powder is screened and is then ready for use.

This powder will take as many rubber coatings or layers as desired if, in front of the spreading knife, a roller saturated with benzene is arranged and the following method is practiced: 7

After having put on one or two rubber layers or coatings, according to the fabric to be treated, the cork is applied simply by causing the fabric to pass, when leaving the knife, beneath a hopper mounted on the work-table (about one meter fifty centimeters from the knife) and containin powdered cork prepared as above state As the fabric passes beyond the hopper the cork is pressed into the rubber by a pair of coacting rolls.

The other coatings are put on as usual, subject to a felt roller saturatedwith benzene being placed in front of the spreading knife, such roller priming the cork and cansing it to adhere tightly to the rubber.

' inally the fabric is thoroughly calenderedi One form of apparatus for carrying out the described process is represented in the annexed drawing in diagrammatic side elevation, with parts in section. The component elements of this apparatus are as follows:

A is the roll for receiving the fabric after a single layer of rubber and cork has been aplied thereto;

the felt roller saturated with benzene for treating the fabric so that a fresh coatof rubber will adhere to the previouslythe tank containing the benzene which discharges slowly therefrom upon the felt roller B;

D, alarge hard-rubber roller where the rubber, indicated at E, is applied and impregnates the fabric which is stretched mechanical? and passes beneath the spreading knife The latter regulates the application of the rubber, so that the cork which is contained in the hopper I will adhere to this layer or coating of rubber.

On passing beyond the hopper, the fabriccoated with the powdered cork travels for a distance of about alongithe-twork table J and reaches the small pressure rolls K which cause the cork to penetrate the still soft and fresh layer so as to form with .in hot water and ironed with a hot iron without undergoing any change; and the cork so treated can be readily dyed, and is capable of receiving any desired impression or printing.

For clothing, inter alia, impressions and colours can therefore be obtained suggestive of fashionable draperies, Scotch checks, etc Obviously, the water-proofing process as I above set forth can just as well be used for waterproofing paper, calico, or any other similar stuff, subject to the operation being conducted as above stated.

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

1. A process of producing waterproof ma.- terial, comprising soaking powdered cork in an alkaline solution, drying the cork, applying a coating of rubber to a sheet of fibrous material, and then applying the dried cork powder to the coated surface of the sheet; substantially as described.

2. A process of producing waterproof material, comprising soaking powdered cork in a solution of sodium carbonate, drying the cork, applying a coating of rubber to a sheet of fibrous material, and then apply ing the dried cork powder to the coated surface of the sheet; substantially as described.

3. A process of producing waterproof material, comprisin soaking powdered cork in an alkaline solution, drying the cork, alternately coating a sheet of fibrous material with rubber and applying the dried cork .powder to the coated surface of the sheet,

and pressing the powdered cork into the rubher after the application of each layer of.

cork; substantially as described.

4. A process of producing waterproof material, comprising soakin powdered cork in a solution of sodium car onate, drying the cork, alternately coating a sheet of fibrous material with rubber and applying the dried cork powder to the coated surface of the sheet, and pressing the powdered cork into the rubber after the application of each layer of cork; substantially as described.

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

RAOUL ADRIEN GRIMOIN-SANSON. Witnesses .FERNARD DUFOUR,

CHARLES LEON Loreen.

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