The so-called first layer of skin, the dermis is in fact a kind, there is a second layer of skin is the dermis. Although leather is from cattle, sheep, pigs, horses, deer or some other animal raw skin peeled off, after tanneries tanning process, made of various characteristics, strength, feel, color, pattern leather material, but there are big differences between the first layer and the second layer of skin.
Is the first layer of skin with a grain of cattle, sheep, pig, etc., have a natural leather muscle and blood marks and other scars, occasional stab wounds during processing and utilization of low belly parts, imported the first layer there are number of cattle leather mark. Full-grain cowhide with more types of dough, in addition to sheep, wild boar skin, crocodile skin. After animal skins epilation cut each into two layers, the upper portion of the fiber is organized into various first layer, two-story part of the loose fibrous tissue can be made of split leather. First layer and second layer of skin from the surface to see no difference, from the point of view of both the experts feel a difference. First layer of skin wear will not peel, split leather wear will peel.
Because the first layer of skin has a thin, dense layer of fibrous layer and its closely connected together over a little loose, it has good strength, elasticity and plasticity processes, etc., can be made of high-grade leather products.