Leather is made by peeling off the epidermis of animals and chemical treatment, while artificial leather is made of chemical fiber cloth. However, due to the similar post-treatment methods, the surface effect is very close and it is difficult to distinguish, but there are many differences in internal physical properties. Imitation leather still has a certain gap in physical strength such as breathability, tearing, aging resistance and hand feeling.
Matters needing attention and key points of leather:
When identifying leather shoes, we should first check the upper material and determine the type of upper leather. If the "genuine leather" grain surface layer is used, it has the original natural characteristics of cowhide: the pores are small, irregular and uniform; The pores and eyes of goatskin are "tile-shaped" in rows; Pigskin has a pile of three holes and is distributed in a figure of eight. Cowhide has fine tissue fibers, rough buffalo hide and rough pores and eyes.
If the modified particle surface layer loses its original characteristics, it should be carefully classified and identified according to the processing technology. Natural leather is boiled into leather, and the cowhide is generally 5 ~ 6 mm thick. Shoes should be made in two layers with a leather machine. The surface layer is a granular surface layer, with fine and compact tissue fibers, smooth and beautiful appearance, good strength and wear resistance. The inner layer is a pile surface layer with thick fibers, large gaps and fluff on the surface.
Reference to the above content: Baidu Encyclopedia-Leather