PU (polyurethane) faux (synthetic) leather material is using knitted fabrics, woven fabrics, or non-woven fabrics as the substrate and then coated with polyurethane resin. https://walterychina.com/what-is-pu-leather/ The fabric can be used for a wide range such as for example shoes, apparel, furniture, handbags etc.
Real leather is peeled off from animals, like pigskin, sheepskin, crocodile skin, etc. The initial layer of leather is directly processed from the raw skin of various animals or cut the thick skin of cattle, pigs, horses, etc into upper and lower layers. Top of the part is processed into the first-layer of leather. The next layer of leather is really a combination of PU resin and the low layer of skin or scrap material of the animal skin. The toughness, handfeel, and abrasion resistance of the next layer are much lower than the first layer of leather.
How to distinguish real leather and PU leather?
First, we must identify from the areas of leather pattern, pores, etc. Can be seen in the surface of natural leather, the pores do exist, and the distribution is uneven, there is animal fibers, side section, and the layers are obvious, and there is animal fibers in the lower layer. Try with your fingernails, you will have leather fibers, there is a feeling of napping, and handful of fibers could be removed, and the faux leather can easily see the fabric, there is absolutely no animal fiber in the medial side, and the general epidermal does not have any pores, however, many are imitation leather pores, there will be undesirable pores, a few of the patterns are not obvious, or have a compared artificial pattern, and the pores are also quite consistent. At this time, they might be carefully observed by the aid of magnifying glass, or can easily see the fine difference.
Generally speaking, the prices of real leather (especially the first layer leather) are very much higher than PU leather, so is real leather has been much better properties than PU? The solution is no. Real leather is expensive is because of its many reasons. Such as scarce sources and tedious processing of animal skins. Nowadays with the development of technology, nature leather cannot achieve many excellent properties of PU leather especially solvent-free PU and DMF-free water-based PU. Because of their excellent physical & chemical properties, healthy & eco-friendly & animal-friendly performance, good uniformity, etc, Europe and USA, etc are highly respected and gradually choose innovative PU leather instead of real leather.