Three Technical Points In The Grinding Process Of Pu Leather Production

In the process of PU leather production, there is an indispensable link, which is the grinding process. In this link, by grinding the leather blank, it can achieve the quality requirements of uniform thickness and smooth surface. Therefore, the operation of this link is quite critical, and how it is handled will directly affect the appearance of the finished product. So, in this link, what are the problems we must pay attention to? Let's introduce the technical points of the grinding process.

1. According to the quality requirements of various PU leathers and the compactness of the base cloth, reasonably select the particle size of the emery cloth or sandpaper. A coarser emery cloth can be used for a harder base cloth, and a finer emery cloth can be used for a soft base cloth.

2. When the PU leather base cloth is ground, it needs to be re-grinded for the first time, otherwise the fiber will be continuously ground, the fluff will be thick and long, and the surface flatness will be poor.

3. If the surface flatness is required to be very good after grinding, the surface can be lightly filled with filling materials. For example, modified casein materials can be used to scrape the surface, and then grind it after it is completely dry to obtain a surface with good flatness.

The above introduces to you the three key operating points in the grinding process of PU leather. Mastering these points is essential to meeting the production requirements of the process. I hope everyone can pay enough attention to them.