1, which constitutes the above difference: the first layer of cowhide consists of a dense and thin fiber layer and a slightly loose transition layer closely connected with it, which has the characteristics of good strength, elasticity and process plasticity; Two-layer cowhide has only a loose fibrous tissue layer, which can only be used to make leather products after spraying chemical raw materials or polishing. It maintains certain characteristics of natural elasticity and process plasticity.
2, the difference in thickness: the first layer of cowhide is pushed up from the bottom with your fingers to expand the leather surface, and you can see the pores. Generally, the thickness is from 1.2 to 1.4 mm, and if necessary, there are 1.6 mm or thicker, such as the top layer of tree bark; The general thickness of two-layer cowhide is1.68mm..
3. Difference in use: The first layer cowhide is better than the second layer cowhide, and the cost is higher. The first layer of cowhide is mainly used for making leather shoes, leather clothes, high-grade leather goods, etc. Two-layer cowhide is mainly used to make mobile phone computer holsters, bags and so on.
4. Difference in utilization ratio: Compared with the utilization ratio of the second-layer cowhide and the first-layer cowhide, the first-layer cowhide is prone to defects, and there are more problems in the leather surface than the second-layer cowhide. The utilization rate is low; The increase of the second layer cowhide is larger than that of the first layer cowhide, so the utilization rate of the second layer cowhide is larger.
That's all I've brought you about the difference between the first layer of cowhide and the second layer of cowhide.