Skillful processing of fine peeling sheepskin

The economic value of sheepskin is high. Good peeling and initial processing of sheepskin can increase economic income and benefit. Here is a brief introduction to the peeling and primary processing technology of sheepskin to the broad masses of readers:

Peel it. When slaughtering goats and Jinyang, most people still use the traditional method of slaughtering goats by wiping their necks. This method will contaminate the fur and affect the integrity of the sheepskin and reduce the quality of the skin. A better way to kill the sheep is to fix the sheep, first cut the skin longitudinally in the sheep's neck with a knife, the incision is about 7cm to 10cm, then put the knife into the incision to cut off the trachea and blood vessels, draw out the blood, or pull the trachea out of the skin and cut off. to prevent the blood from contaminating the fur. After the blood is released, peel the skin immediately before the sheep's body temperature drops. Do not peel or blow with a knife, because peeling with a knife is easy to hurt the skin, and air blowing is harmful to the puffer. It is best to use boxing method, the sheep lying on the clean board, with a sharp knife in the abdominal midline first pick open the cortex, and then to the front midline back to the anus. Then pick two horizontal lines from the inside of the two forelegs and the two hindlegs, straight to the hoof, perpendicular to the vertical line of the chest and abdomen. Then use a knife to peel about 5 centimeters inward along the cortex of the chest and abdomen, tighten the edge of the skin of the chest and abdomen with one hand, and hit the meat with the fist with the other, so that the whole sheepskin will be peeled off quickly.

Plastic surgery. Scrape off the raw skin with a blunt knife to remove meat crumbs, fat, blood clotting and impurities from the skin board. Be careful not to scratch the skin plate and maintain the integrity of the fur. Then remove the lips, ears, hoof flaps, coccyx and the corners that hinder the plastic surgery of the skin. Finally, according to the natural shape and telescopic nature of the skin, all parts of the skin are spread flat to make the skin flat and square. Antiseptic treatment. Rawhide is mainly composed of collagen fibers, containing protein, fat and water, especially easy for bacteria to reproduce, decompose and rot.

Therefore, antiseptic treatment must be done in time. At present, there are two main anticorrosion methods: drying method and salting method.

1. The fresh skin is dried to 12%-16% water content by the drying method, so as to create environmental conditions that are not conducive to the growth and reproduction of bacteria and achieve the purpose of anticorrosion. The specific method is, first shake the fur of the rawhide smoothly, the leather plate is down, the hair surface is up, stretch out the fur of the limbs according to the natural shape, lay it on the board or attach it to the wall, and be careful not to pull it too much until the leather plate is set, and then put the skin plate up and put it in a cool and ventilated place to dry. In the process of drying, pay attention to anti-freezing, anti-sun, prevent human and animal trampling.

2. Salinization. This method can inhibit the reproduction of bacteria as soon as possible, do not shed hair, do not decay, and can make the skin preserved for a long time. There are two specific methods: one is the dry curing method. Is to sprinkle salt evenly on the inside of the fresh skin, using 35%-50% of the fresh skin, so that the salt fully absorbs water and gradually seeps into the skin. The fresh skin plates sprinkled with salt face to face, stacked into small stacks, marinated for 2 to 3 days and then stretched to dry. The second is the salting method. Put the fresh skin in a pre-prepared salt solution with a concentration of 25% and a temperature of about 15 ℃, and soak for 16 hours for 26 hours. Then take out the sheepskin and put it on a rope or pole and let it drip freely. After dripping water, spread 20%-25% dry salt noodles on the leather plate according to the skin weight and dry it.

Keep and store. After the above treatment, the dried skin should be arranged board to board, skin to skin, every 10 to 20 pieces as a bundle, bound with string and stored in storage, covered with plastic sheeting, and, if necessary, add insect repellent such as sanitary ball or refined naphthalene powder to prevent fur from being eaten by insects. At the same time, we should also pay attention to ventilation, rodent damage, mildew and deterioration.