One of the analysis of extrusion coating wrinkles

First, wrinkles when laminating

cause

1. The substrate film has a poor shape.

2. Films that are susceptible to humidity (such as nylon, veilon, etc.).

3. The film tension is not uniform.

4. Overheating and drying of the AC agent during drying.

5. The pressure roller is deformed.

6. Cooling roller cooling is insufficient.

7. The rollers do not maintain sufficient balance between them.
8. The rotation of the roller is inflexible.

Approach

1. Check the shape of the film.

2. Be careful not to make the film absorb moisture.

3. Make adjustments so that the film has a uniform tension.

4. Dry the AC agent at a suitable temperature.

5. Use a deformation-free pressure roller.

6. Increase the cooling capacity of the chill roll.

7. Adjust the rollers so that they balance each other.

8. Check the rotation of the roller.

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