The film blowing machine causes problems with thin film products due to some factors of its own. The following are long wrinkles and unstable membrane bubbles.
Wrinkled film
Reasons: ① the thickness of the film is uneven; ② the cooling effect is not enough; ③ the inflation ratio is too large, causing the membrane bubble to be unstable, swinging back and forth, and easy to wrinkle; The inside is flattened, so the film is also prone to wrinkle; ⑤ The pressure on the two sides of the traction roller is not the same, one side is high and the other is low; .
Solution: ①Adjust the thickness of the film to ensure uniform thickness; ②Improve the cooling effect to ensure that the film can be fully cooled; ③Appropriately reduce the inflation ratio; ④Appropriately reduce the angle of the herringbone splint; ⑤Adjust the pressure of the traction roller, Ensure that the film is uniformly stressed; ⑥ Check the axis of each guide shaft and make them parallel to each other.
Film blowing machine membrane bubble unstable
Reasons: ① Extrusion temperature is too high, the fluidity of the molten resin is too large, viscosity is too small, and it is easy to fluctuate; ② Extrusion temperature is too low, the output is small; ③ The air volume of the cooling air ring is unstable, and the film bubble is not cooled. Uniform; ④ Interference and influence from strong external airflow.
Solution: ① Adjust the extrusion temperature; ② Adjust the extrusion temperature; ③ Check the cooling air ring to ensure that the amount of air supply around is uniform; ④ Prevent and reduce the interference of external airflow.
https://www.beiguomachine.com/
