Selection Requirements For The Appearance Quality Of Sandpaper Base Paper

1. The color should be basically consistent, especially for each batch of natural color paper, otherwise it will affect the color matching of the trademark surface.

2. Dust should not be excessive, and there should be no folds, wrinkles, curtains, or holes, especially on paper of various colors without spots.

3. Smoothness, the paper surface should be flat, and the woolen marks should not be too obvious. The quantity and thickness on both sides should be consistent. Don't be careless.

4. The edges of the large roll should be cut neatly at both ends and there should be no breaks.

5. The paper core tube is intact and has good hardness. The weight of each large roll should not be too large. Generally, it is recommended to use 300-600kg per roll of paper according to the specifications.