How to solve the wrinkle of film blowing machine?

As the most common film blowing machine in plastic packaging machinery, film wrinkles may occur occasionally. The fundamental reason is the uneven transverse thickness of the film. Even if it is very small, it can cause obvious wrinkles after accumulation, affecting the measured data of fat loss test, film tearing test, film friction coefficient, etc.

Solutions of solve the wrinkle film blowing machine

1.Reduce the temperature

Lowering the melt temperature can effectively reduce the melt fluidity, making it relatively strong when extruded from the die head, and not causing uneven film cooling due to the tilt of the film bubble caused by the cooling air.

2.Adjust the air volume

Reduce the cooling air volume or adjust the uneven cooling air.

3.Reduce the angle of the herringbone plate

The angle of the herringbone plate is too large, so that the film is flattened in a short time, resulting in wrinkles. The angle of the herringbone plate should be appropriately reduced.

4.Adjust the die

The film mouth extrusion is uneven, and the mouth die should be adjusted to make it in a vertical state.

5.Reduce the tension of the winding roller

The tension of the winding roller is too large to pull the film wrinkles. The tension of the winding roller should be appropriately reduced.