Knowledge Of Leather Knowledge

　 (1) natural leather. Genuine leather )

Full grain leather: leather made of natural leather, called full grain leather.

Modified leather: during the leather making process, a light finishing leather is made on the original grain of the animal.

Suede: in the leather making process, the surface or the reverse side of the leather is used as the surface and collectively referred to as suede leather.

　　 (2) synthetic leather

Artificial leather: Artificial shoes Surface leather: coated on the surface of textiles.

Polyvinyl chloride foam: coated with polyvinyl chloride on the surface of the foam plastic layer.

Synthetic leather: PU synthetic upper leather: coated with Pu on the base of no textile.

Polyvinyl chloride synthetic shoe upper leather: polyvinyl chloride is coated on the surface of non-woven fabric.

　　 (3) performance characteristics of natural leather

The location of natural leather is divided into six parts: the buttock, the back, the neck, the shoulders, the abdomen, the armpit and the limbs according to the characteristics of the animal skin.

Buttocks: the fibrous tissue of this part is compact, high strength and good bending resistance. It is the best part of the whole leather, and has the most value.

Back: smooth surface, fine grain, second only to the buttocks.

Neck and shoulder: located in the anterior part of the back, its fibrous tissue is slightly looser than its back, with rough surface and many wrinkles.

Abdomen: at the abdomen of the animal, located on both sides of the buttocks, its fibrous tissue is soft, thin and extensible, but lacks elasticity: its physical strength is also poor.

Armpit: located at the junction between the front and rear legs and the abdomen, it is a small half garden, and its quality is the worst part of the whole leather.

Limb: that is, the legs of animals, hard texture, thin skin area is the secondary part of the whole leather.