SU76655A1 - A method of making skin substitutes - Google Patents

Description

For the manufacture of leather substitutes (kirsa and futor), the method of impregnation of fabrics with liquid synthetic rubber adhesives is used (the end of the adhesive is about 30%).

This method is uneconomical since it is associated with the loss of a significant amount of gasoline. Other methods of tissue impregnation with adhesives and latexes are known using pressure, vacuum, etc.

However, of practical importance in industry. these methods have not received.

The proposed method of impregnation of fabrics is based on pressing into the fabric mixtures on a Kazchuk basis, which are in the semi-liquid state. Impregnation can be either through or one-sided. During the through impregnation, the fabric 7 (Fig. 1) is passed through the bath 2 filled with the working mixture and the squeegee 3, then enters the calender 4 for impregnation and into the drying chamber 5. For unilateral impregnation, only 2 is installed in front of the calender (Fig. 2) . With a properly selected consistency, the mixture of the shaft is not soaked with impregnation, as they are cleaned in the process of work, they come in about the flow of the fabric between them.

For impregnating the kersey with the proposed method, in order to provide a higher quality of water, the floor is recommended with the following mixtures (p100 parts of synthetic

Mixture number 1

Synthetic rubber . .

Soot75-

Oxide

Sulfur

Tpuram. .

Captax

Rubrax 25-

Vaseline or engine oil 25-

Petrol

Mixture L 2

Synthetic rubber . . .

Rubrax

Paraphias

Rosin

Soot20

Mineral oil (or

petroleum) ....

Sulfur

Zinc oxide

Thiuram

Cantax

Mixture J6 3

S11tietic rubber ...

Kaolin; ......

Sulfur

Thiuram

Captax

Casein

Soot

Oxide

Ammonia ...

Water 150-

Engine oil .... 50-

Mixtures 2 and 3 are brought to a semi-liquid state by heating. Heating is carried out using plates 3 or in a heat chamber located between the bath (or squeegee) and the calender along the fabric 1 (Fig. 2).

After impregnation on the calender, the semifinished product is closed with a thin face layer (for kersey), dyed with gloss, subjected to embossing and vulcanised by conventional methods.

As a result of applying this method of Impregnation, the consumption of gasoline in the production of kersey and futhor is significantly reduced (and when working with mixtures No. 2 and No. 3, gasoline is not consumed at all), the productivity of the impregnating unit increases by 2-3 times and improves. quality of impregnation.

Subject invention

Claims (2)

1. A method for making leather substitutes for a multi-layer kersey by impregnation and priming it with highly viscous plastic masses based on rubber, characterized in that, in order to deeply incorporate these-mass into the interfiber structure of a multi-layer kersey, the plastic mass is pressed with the help of rollers. 2. A device for carrying out the method according to claim 1, wherein it is made in the form of a two-shaft calender and a bath or doctor blade in front of the calender to pre-distribute the mass on the surface of the fabric. one Have FIG. 2