SU59963A1 - Zolka and degreasing method of hides or gem - Google Patents

Description

Nowadays, chrome skins for the top are usually pitted after namazi - in a solution of sulfur and a mixture of lime. With sTOivf, it is very often that there is no way to avoid a scrub of SCREAMS. The main cause of this deficiency lies in the unevenness of the flare.

This deficiency in further operations is further deepened, and the finished product is obtained with a steel face.

Stitching a face on chrome skins for the upper is a very common spreading and does not reduce the quality of the finished skin.

The proposed method of ashing basics on the following.

After the usual namaz, the charley contains in its thickness a very significant amount of sulfurous sodium and (At the same time, it practically has no alkaline pressure.

get enough pozolovoe pepe. On the other hand, it is known that solutions of certain salts in the appropriate concentration can dehydrate the cheek and hide.

These include salt, salt, hyposulfite, potash, calcined soda, magnesium sulphate, ammonium sulphate, glauber salt and many others. The most well-known methods of dehydration include, for example, heatsuishing of a pair of coals.

However, the most p-dehydration usually occurs at a high salt concentration, for example, in a saturated solution of sodium chloride. With a decrease in this concentration, the degree of dehydration decreases.

If, after the namaz, you immerse the cheeks in water, then the water, which is located in the hide, thus causes the abrasive effect of the sodium sulphide solution, which is in the hide,. As already mentioned above, in this case, face flax will pierce the face, since the outer layers will swell very much in the first place.

Quite a different way is if it is to immerse the pillars after the amazi in the solution of one short-circuit of the mentioned salts. The concentration of this solution must be chosen in such a way that the ability to dehydrate to a large extent compensates for the ability of the solution of sulphurous soda in the hell to cause water absorption by the ashes. As a result, there will be no excess swelling of the outer layers, and the solution will quickly and equitably penetrate the entire depth of the mole.

Of the names: van "s salts, more suitable are those whose solution has a pH of 7.5-M. Instead of one salt, they can be used. mixes.

With this method, 3 tanks can be poured or better in moving equipment with frequent rotation; Salting is completed within 2-3 hours for small skins and 5-6 hours for large skins.

To destroy remnants of keratins, it is possible to add g / l of sulfur. The temperature in the ash pan is allowed between 18-25 °.

Particularly interesting results are obtained with the use of this method of ash for raw materials containing a significant amount of fat, for example, sheepskin, if such a salt is used as 0 salt-free salt. possesses the ability to saponify fats in a row with this. In this case, degreasing of the ashes occurs along with salting; when cleaning such a fly after the ashes with a dead end in the face is plentiful - fat and gneist come out.

Ash liquid can be used two or three times.

Offered -. The method is applicable to all known methods of ash, and not only for go after plastering.

Example 1. After spreading the cinder, the sintering bed is loaded into the solution with a concentration of 25-30 g / l at a liquid ratio of 3-4 and a temperature of 22 °; The clearing is preferably carried out in a long-run, with continuous rotation. Duration 2-3 hours. This is followed by intestinalization and other normal operations.

Example 2. After spreading the sheepskin paste is loaded into a solution of soda ash 20 g / l with a liquid ratio of 3 and a temperature of 25 °. The salting is carried out in a long run with continuous rotation of the wings. After 1 hour, sodium sulphide is added at a rate of 1.5 g / l, and the rotation continues for another 2 hours. Then the skin is discharged, the crust and three times are squeezed out on a Whitney machine or the like, until the fat and dirt are completely removed.

In the future. the garlic is processed as usual.

Example 3. After soaking the skins bychina zag.pyzhatots in the barkas into the solution (0.5 g / l) and rotate 2 hours. Then skins are immersed with a solution of Glauber's salt (20 g / l) and lime (10 g /, counting on CaO) and treated for 25 hours at 25 °.

The subject matter of the invention.

Zolka method and. degreasing the hides or the gol after desiccation in the presence of, excluding the fact that, in order to speed up the process and to reduce the uniform thickness, dehydrating action in relation to collagen.