Request Method of maturing leather

(a) cleaning. Skin peeled off, cut off the tendons, mammary glands and external genitalia, etc., the skin plate lining stained with fat deposits and connective tissue, to be cooled with a knife from the buttocks to the direction of the head to scrape, do not scrape upside down, so as not to expose the hair roots, so that the fur "perforation" defects.

(ii) antiseptic. Antiseptic method of drying method. Fresh skin scraped fat, dry sawdust, talcum powder, rags, etc. to rub the inner membrane of the skin plate, until the fat deposits are completely wiped away, and then shake off the sawdust and talcum powder, and then the skin tube hair inwards, skin plate towards the coat in the special braces, hanging in a dry and ventilated place to dry, can not be rained on, sunburned and baked on the fire.

The otter rabbit skin tanning process is: selecting the skin - soaking - degreasing - again dehydration - again to remove the meat - soaking acid - tanning - neutralization -Shaking water -fat drying -dry shoveling -finishing. Time for each process: about 20 hours for water immersion, 1 hour for degreasing, 48 hours each for acid immersion and tanning. Temperature: water immersion about 25 ℃, degreasing about 39 ℃, tanning about 36 ℃, neutralization about 30 ℃, fat 40-60 ℃. In addition, the amount of various reagents should be accurate.