US1257665A - Process of producing artificial leather. - Google Patents

Description

C. E. ARNOLD.

PROCESS OF PRODUCING ARTIFICIAL LEATHER. APPLICATION FILED sPT.3. 1914. RENEWED JULY 9.19i1.

Patented Feb. 26,1918, 13

'IIIIHH IN UM C5 ,14 l In 7 onannns nnwoon marrow, or wrnnms'ron, DELAWARE, asslenoa '10 E. I. nu ron'r ma nEMoUns POWDER COMPANY, or 'wrmvrme'ron, DELAWARE, A CORPORATION or NEW JERSEY.

PROCESS OF PRODUCING ARTIFICIAL LEATHER.

Application filed September 3, 1914, Serial No. 859,963. Renewed July's, 1917. Serial Ito. 179,557.

= provement in Processes of Producing Artishaft on which thefabric fabric will be. very purpose of illustration I ficial Leather, and the following is a description thereof.

.do hereby declare that full, clear, and exact y invention relates particularly to an Improvement in the methods of producing but more especially woven coated fabrics, fabrics carrying a coating or layer of a nitrocellulose composition.

The object of my invention is to produce a product of this kind in which the layer of nitrocellulose composition carried by the effectively and securely anchored on the fabric, and in which the coating composition will adhere in an effective manner to the fabric.

While my invention is carried out in many different ways, for the shall describe only one way in which it may be carried out, and While, furthermore, it maybe carried out in connection with any desired form of apparatus, for the purpose ofillustration. I have shown only one form of apparatus in theaccompanying' drawings, in which- Figure 1 is a front elevation of a machine which may be used in connection with-my process; I I Fig. 2 is a side elevation of the same; Fig. 3 is an end elevation in detail of a is carried when being fed into the machine;

Fig. 4 is an end elevation of one of the wogden shuttles used for carrying the fabric; an I l 1 Fig. '5 is an end elevation of one of the gears. In the drawingsl have shown a machine having a mainframe 1, in-which there are carried three rolls 2, 3 and 4. These rolls 2, 3and 4 are carried upon shafts 5, 6 and 7, respectively. The shaft 6 of the middle roll 3 is maintained in a fixed position in the main frame 1. The shafts 5 and 7, however, are supported in vertically movable Y boxes 8 and 9, which are adapted to be adusted by means of screws 10 and 11, supported in the main frame '1 and having wormwheels 12 and 13- on their ends whichmesh' with worms 14 and 15, carried by two capable of being- . shafts 16 and 17, and adapted to be operated by handles 18 and 19. The shafts 5, 6 and 7 20, 21 and 22, which are keyed to the shaft by means of removable keys 23, said gears 20,21 and 22 being all of the same size. Upon the other end of the said shafts 5, 6 and 7, are carried gears 24,25 and 26, the gear25 being smaller than the gears-24 and.26, and said gears being'keyed to their respective shafts in a similar manner to the gears 20, 21 and 22. Only one of these sets of gears is used at a given time. When the gears Patented Feb. 26, 1216.

carry, near one end thereof, gears 20, 21 and 22 are used the keys are removed from gears 24 and 26, and when the gears 24, 25 and 26 are used the keys are removed from the gears 20 and 22. The gears 20, 21 and 22 are used when it is desired to have the rolls 2, 3 and 4 moved at the same 31 and- 32 fitting against the adjacent faces of the rolls 2 and 3 to retain. a body of plastic material 35 in lace thereon. Near rame 1- supports in v the bottom the main a pair of arms 36 ashaft 37 adapted to receive a wooden bobbin 38 carrying a roll of fabricsuch as cloth to be provided with a coating. .A friction band 39 extends around the shaft 37, so as to retard the unwinding of the fabric and therefore maintain it taut.

From the shaft 37, the fabric is fed over a guide roll 40, supported in the arms 36.

The fabric may then be smeared in. any

suitable manner with a sticky cementing coat of a nitro-cellulose composition to aid in obtaining satisfactory anchorage, although this cementing coat, isnot essential. From this point the fabric passes between the rolls 3 and 4, where it receives a thin coating of plastic material from the body of a plastic nitro-cellulose composition 35.- After a thin coating has been applied in this manner, the coated fabric is subsequently run through the machine in the same manner,

and a second coating of plastic applied. The fact that two thin plastic coatings are ap tie plied in this manner enables the first coating of plastic material to be pushed into the total thickness desired by the application of only one coating the coating may be so thick that the rolls do not push it into the fabric sufliciently to give good anchorage. My invention involves the novel idea of applying first a rather thin coating which thoroughly penetrates the fabric and then applying a coating of any desired thickness.

- The nitrocellulose compositionsapplied to the fabric may be of any suitable kind which is of such a nature that they will harden or dry after leaving the machine.

While I have described my invention above in detail, I wish it to be understood that many changes may be made therein without departing from the spirit of my invention. i

I claim:

1. The process of producing coated fabrics which comprises applying to the fabric by pressure to cause incorporation therewith a relatively thin coating of a plastic containing nitrocellulose and then applying thereto by pressure another coating of a composition containing nitrocellulose.

2. The process of producing coated fabrics which comprises applying to the fabric a coating of a cementing material, then before this coating has been allowed to dry applying a relatively thin coating of plastic containing nitrocellulose, and then applying thereto another coating of -a composition containing nitrocellulose, said second and third coatings being applied to the fabric by pressure.

3. The process of producing coated fabrics which comprises applying to the fabric by pressure with calender rolls to cause in corporation with said fabric a relatively thin coating of a plastic containing nitrocellulose and then applying thereto by pressure with calender rolls another coating of a. composition containing nitrocellulose.

4. The process of producing coated fabrics which comprises applying to the fabric a coating of a cementing material, then before this coating has been allowed to dry applying a relatively thin coating of plastic containing nitrocellulose, and then applying thereto another coating of a composition containing nitrocellulose, said second and third coatings being applied to the fabric by pressure with calender rolls.

5. The process of producing coated fabrics which comprises applying to the fabric by pressure to cause incorporation therewith a relatively thin coating of a plastic containing nitrocellulose and then applying thereto by pressure another coating of a plastic composition containing nitrocellulose.

- 6. The process of producing coated fabrics which comprises applying to the fabric a coating of a cementing material, then before this coating hasbcen allowed to dry applying a relatively thin coating of plastic containing nitrocellulose, and then applving thereto another coating of a composition containing nitrocellulose, said second and third coatings beingapplied to the fabric by pressure, the first plastic coating being subjected to pressure before applying the subsequent coating.

7. The process of producing coated fabrics which comprises applying to the fabric a. coating of a cementing material, then before this coating has been allowed to dry applying a relatively thin coating of plastic containing nitrocellulose, and then applying thereto another coating of a composition containing nitrocellulose. said second and third coatings being applied to the fabric by pressure with calender rolls, the first lastic coating being subjected to pressure efore applying the subsequent coating.

8. The process of producing coated fabrics which comprises applying to the fabric a coating of a cementing material, then before this coating has been allowed to dry applying a relatively thin coating of plastic containing nitrocellulose, and then applying thereto another coating of a composition containing nitrocellulose, said second and third coatings being applied to the fabric by pressure, the first plastic coating being subjected to pressure before applying the subsequent coating.

In testimony that I claim the foregoing I have hereunto set my hand.

CHARLES ELWOOD 'ARNOLD.

Witnesses:

H. W. MATHESON, HAMILTON BRADSHAW.

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