Classification and Use of Coating Blade

1. primer knife

Under normal circumstances, the primer uses a thicker blade, and the liquid-wrapped paper has a high proportion of long fibers, rough paper surface, and large uneven friction. Most of them use thickness 0.457. Due to the high strength of the thicker knife, the loading pressure The deformation is small, and the coating amount is controlled. The higher the speed, the thicker the knife. The coating blade produced by Golden Shell Company has been applied to Asia Pacific Senbo and Universal Sun.

This kind of scraper is the most critical, high technical content, primer blade angle is generally 25 degrees, 30 degrees, 35 degrees.

At present, the existing problems are: when the primer knife is closed, it is easy to burn the knife due to high temperature. If the knife is used continuously after burning, the coating will have dark lines (this line can be seen by light).

At present, the general treatment of paper mills is to spray water first and then close the knife. And our company's products are also optimized from raw materials and production processes, basically solving the problem of burning knives,

2. coating knife

The blade angle is generally 0~4~25~30~35 degrees (some customers have no intermediate coating).

3. Surface Coating Knife

For the second core technology of the coating blade, the blade angle is generally 4 degrees. Also useful 0 degrees, 2 degrees

There is a particle pattern problem in the top coating or the bottom coating (this is rare because the top coating is fine, and this is often caused by the bottom coating due to the raw material problem). There are small particles in the coating (calcium carbonate), and because the filter device is not replaced in time and loses its due function, the small particles will cause the coating to have a particle pattern. The position of the stripe will also change due to the movement of the particles, which has nothing to the quality of the scraper.

For the problem that the scraper blade is not durable, because there are paper edges or protrusions at both ends of the paper, the general knife ends wear faster first.

If the coating pattern is caused by the quality problem of the blade, the position of this pattern is a fixed line pattern.

The blade of the coating blade produced by gold shell is sprayed with tungsten carbide, and the Rockwell hardness HRC80 is very wear-resistant. The blade of each blade is carefully polished by a German imported fine grinder, and then professionally inspected at the factory, which can fully guarantee the quality.