How to distinguish the first skin and the second skin
4hw.com.cn: when many people buy leather products, they are often fooled by the merchants. They regard the two-layer leather as the first layer leather. For many small white consumers, they are basically confused. They don't even know what is the first layer leather and the second layer leather. Let's see how to distinguish the first layer leather and the second layer leather.
The first skin is directly processed from the original skin of various animals, or the thick skin of cattle, pigs, horses and other animals, after depilation, is cut into two layers horizontally, and the upper part with tight fiber tissue is processed into various first skin. It is durable and will not break after wearing.
The second layer is made of thick leather by slicing machine. The first layer is used to make full grain leather or shaving leather. The second layer is made of two layers of leather through a series of processes such as coating or film sticking, so it is also called film sticking leather. The second layer leather still keeps the characteristics of cow leather, but the wear resistance and bending strength are far from the first layer.
Resolution method of the first and second skin layers:
Distinguish the first layer skin and the second layer skin. If you are an expert in touch, you can feel the flesh. If you are not an expert in touch, you can press it with your hands. If you press it with wrinkles, it is the first layer skin. If you press it without wrinkles, it is the fake skin (that is, the second layer cowhide)
The higher the grade of the leather, the thinner the leather. The best leather is as thin as paper.
The second layer of cow hide is the thickest, because the first layer of cow hide is broken and then added with polyethylene material. If the leather surface is broken, it will be broken before it is produced, so the leather surface is thick and cannot be polished in the production process. If it is polished, the upper will be broken after it is used. If the leather is not polished, it will be easy to open the glue. Therefore, the leather shoes of the second layer of cow hide are all made by machine without glue and without glue moisture Taste.
The leather shoes with the first layer of cow leather will be polished during production. Only by polishing can the adhesive be more firm. If the leather shoes are glued, they will naturally smell of glue. The first layer of cattle hide is the skin of cattle. There is only one color of cattle. The glossiness is not as bright as the second layer of cattle hide (i.e. fake cow hide). Therefore, after production, polishing agent will be sprayed, so there will be a smell of oil.
The first layer is thinner than the second layer. The better the first layer is, the thinner the second layer is. The thickest is the second layer of cowhide. Because the second layer of cowhide is made of polyethylene material added after the first layer is broken. If the leather surface is broken, it will be broken before it is produced. Therefore, the leather surface is thicker and cannot be polished in the production process. If it is polished, the upper of the shoe will be broken after use. If the leather is not polished, it will be easy to glue. Therefore, the second layer Leather shoes are made of machinery, without glue, no glue smell, sole is made of foam and a small amount of rubber. After wearing, the sole will burst like tofu.
Look at the color
The leather of the first layer should be divided into the whole leather and the broken leather. The leather color, back color and section color of the whole leather are the same. Broken skin is also a kind of first layer skin, but for price reasons, there are many colors. After production, spray a little color again. After use, some parts will be decolorized. Decolorization is not peeling. If you spray decolorization again, you can wear it again. Peeling can't be repaired only lost. Broken skin is cheap and popular with workers.
The two-layer cowhide is the whole skin. It will not be discolored after use, but will peel off. But it is good-looking in the new era and has a good appearance. It is popular with white-collar workers.
Burn with fire,
Two layer cowhide (also known as artificial leather with cowhide fiber), also known as fake cowhide, also known as composite cowhide or film coated cowhide, because it uses the leftover material of the first layer of leather, which is burned with fire, and has the same smell as the first layer of cowhide.
It's unscientific to distinguish genuine leather from fake leather by fire, because the two-layer cowhide can also be evenly floated without leaving any trace. If the merchants use fire to float, they will tell you that it's genuine cowhide. Don't believe it. It's a trick for the merchants to play.