I'll Show You Animal Leather.

Animal leather is a kind of nature. Leatherwear That is what we often call the dermis. It is a kind of fixed and durable material converted from animal (raw hide) after a series of physical and chemical processing. It has the advantages of softness, toughness, water resistance, deformation, drying, shrinkage, heat and moisture resistance, chemical resistance and so on. It has the special advantages of good air permeability and aging resistance.

　　 Animal leather There are also many kinds of sheep. Leatherwear Cattle leather, horse leather, snake leather, pig leather, crocodile leather and so on. According to their properties, they can be divided into two layers of leather, full grain leather, suede leather, modified leather, patch leather, composite leather, and coated split leather.

The two layer leather refers to the leather that is crushed in leather processing by chemical and physical means. This kind of leather is hard, easy to break, and not enough to extend.

Full grain leather: leather that is retained and used on the original surface (growth or scale) of animal skin, called positive leather. The full grain surface is not directly used for coating. Most of them are beautified and coated, such as embossing. The raw materials used for full grain leather require high strength of raw materials, and the processing requirements are high. They are high-grade leather, and the surface of the leather is completely retained in leather and its fastness is good. The surface of the whole grain leather is not coated or coated and very thin. It keeps the leather's soft elasticity and good air permeability, and its finished products are comfortable, durable and beautiful.

Suede leather: refers to the surface of the velvet leather, the use of leather facade (raw hair or scale side) grinding is made of positive lint, the use of leather reverse (meat surface) is called the back velvet, the use of two layers of leather hemp leather made of two layers of velvet, because the suede leather has no coating layer, its permeability is better, softness is more improved, but its waterproof, dust-proof and maintenance poor, no grain upright leather is less firm. The finished products of suede leather are comfortable and hygienic, but besides the suede leather made by oil tanning, the suede leather is dirty, not easy to clean and maintain. It is mainly used for leather. shoes Leather clothing Leather bags, gloves production.

Modified leather: part or all of which is used to remove the original surface of animal skin, and then apply artificial leather on the top. The surface coating is made of various chemical materials. Most of the finishing film is made of various chemical materials. After finishing many times, some finishing patterns are made. Some of the finishing leather is transferred to the leather surface by pre production chemical film, also known as film transfer leather or film leather. The modified leather is mainly used to make up for the lack of material surface. Its permeability is poor, its fastness is low, its fastness is low, its folding resistance and aging resistance are reduced, and its wear is not as good as that of the full grain leather. However, its water resistance is good, and it is easy to clean and maintain. Two.

Composite leather refers to a rubber film on the split skin. It has good chemical durability and is suitable for boot shoes.

"Genuine leather" is a common term in the leather products market. It is a customary way for people to distinguish synthetic leather from natural leather. In the consumer's concept, "real leather" also has a non false meaning. It is mainly made of animal skin. There are many kinds of dermis, different varieties, different structures, different quality and different prices. Therefore, leather is both a general term for all natural leather and a vague logo on the commodity market. From a physiological standpoint, any animal skin has hair, epidermis and dermis. Because there are small mesh bundles in the dermis, they are quite strong and breathable. The epidermis is located under the hair and is closely attached to the upper part of the dermis, and is composed of different epidermal cells. The thickness of the epidermis varies from animal to animal, for example, the thickness of the skin of the cowhide is 0.5 to 1.5% of the total thickness, and that of sheep skins and goat skins is 2 to 3%, while that of pigskin is 2 to 5%. The dermis is located under the epidermis, between the epidermis and the subcutaneous tissue, and is the main part of the skin. Its weight or thickness accounts for more than 90% of raw skins.