One, the basic knowledge that the skin expects
1, dermal meaning
"Dermal " common word is on leather goods market, it is people is discriminative synthetic leather and a kind of habit to natural leather makes a way. In the idea of consumer, "Dermal " the meaning that also has blame holiday. It basically is be machined by the skin of the animal and become. Dermal sort is various, breed diversity, the structure is different, character each different, the price also six to one. Accordingly, dermal since is all and natural a general designation of leather, also be an ambiguous label.
the viewpoint that depends on physiology, any hide all have hair, skin and dermal share. Because meshy fibril is contained in derma bundle, reason all is provided those who comparative is puissant with permeability.
Skin is located in under hair, clingy in derma above, be arranged by the cuticular cell of different figure and become. Cuticular ply as the animal different and different, for example the skin of sheep of 0.5 ～ 1.5%; that the cuticular ply of cowhide is total ply and goatskin are 2 ～ 3% ; And pigskin is 2 ～ 5% . Derma is located in under skin, interpose between skin and subcutaneous tissue, it is the bases of peltry, its weight or ply occupy the 90% above of peltry about.
2, the raw material of curry
The raw material of curry is animal skin, although the commonnest in our life is pigskin, cowhide, sheepskin, but actually most animal skin can be used at curry. The quality that is cowhide, pigskin and sheepskin only is good and crop is big, it is the main raw material of curry.
Although the raw material skin of curry is phyletic various, the animal that issues according to international protects a series of law laws and regulations such as byelaw, the raw material that is used at production truly got restrict on certain level, commonly used leather is: Change of Niu Ge, sheep, pig change and horsehide.
3, the character that the skin expects and distinction
Head layer skin and 2 skins: Press the administrative levels cent of leather, have head layer and 2 remove from office, among them head layer change has the change of an upper leather, shave, change that press a flower, special effect remove from office; 2 change divide a pig again layer and 2 oxen 2 change.