Leather products can be divided into two categories: real leather and artificial leather.
Let me introduce leather first. According to animal types, leather mainly includes cowhide, pigskin and suede. Leather refers to natural leather, which is processed from animal skins. Because of its high price, high gloss, and cruelty, more and more environmentalists have protested against the boycott of genuine leather products, which cannot be widely used.
High-end notebook covers are made of first-layer cowhide. What do we often mean by the Niutou Tier and Niu Second Tier? In leather processing, thicker animal skins need to be split into several layers by a splitting machine to obtain leather of uniform thickness and obtain more leather. The side where the animal skin grows hair is the first layer of leather also called grain leather; the layers below the first layer of leather are called two-layer leather, three-layer leather, and four-layer leather. The first layer is generally the most expensive and the best. The Crazy Horse skin that is often heard in the market is the better top layer cowhide.
The following introduces artificial leather, which is mainly divided into two categories: PVC and PU. PVC materials used in notebook production are generally low-end products. The cover leather is harder and feels not as good as PU and leather. However, it is widely used because of the lower price of the material.
PU leather is the most common leather material for notebook covers, mainly divided into discoloration PU and ordinary PU. The biggest advantage of color-changing PU is that the leather will have a gradual color effect when it is heated and stressed, highlighting the color of the substrate. It is used for embossing logos and graphics to produce good visual effects, so it is loved by major companies. PU leather feels the same as color-changing leather, but the embossing effect is different. Please see the following effects. The blue cross pattern is color-changing PU, and the pressure change effect is very beautiful.