Detailed explanation of the hottest coating compos

2022-08-12
  • Detail

Detailed explanation of coating composite failure

causes of wrinkle failure of composite film:

1. The thickness of substrate is uneven, and the thickness difference is too large

2. The substrate position is skewed, resulting in wrinkles in the composite film, and with the accumulation of skewness, the degree of wrinkles will increase accordingly

. if the substrate is a film material that is easily affected by humidity (such as nylon film), and there is a huge pressure phenomenon in the hygroscopic plastic processing industry, it is easy to wrinkle in the extrusion process

4. the tension setting and control are improper, and the tension of each part is uncoordinated and mismatched

5. the composite pressure is set improperly

6. the axis between the silicone rubber press roll and the cooling steel roll is not parallel

7. the surface of the guide roller is not clean, with foreign matters adhered, or the surface of the guide roller is uneven, with pits, scratches, bumps and other phenomena

solution:

1. Replace the substrate to ensure that the thickness of the substrate is uniform

2. Adjust the position of the base material to avoid skewing during transmission

3. preheat and dry the substrate, or replace the substrate without moisture absorption

4. adjust the tension of unwinding and rewinding to make the tension of each part adapt and match each other

5. carefully read the technical instructions and adjust the pressure of the compound roll to an appropriate size according to the actual situation

many enterprises compete to participate. 6. Adjust the relative position between the silicone rubber press roll and the cooling steel roll to keep them parallel

7. clean the surface of the guide roller and replace the damaged guide roller. Let's learn about the test steps of the lower tension tester for rubber materials to ensure that the surface of the guide roller is flat, smooth and clean

(to be continued)

Copyright © 2011 JIN SHI