How to solve Blown Film Machine problems?

The methods to solve the problems of Blown Film Machines mainly include adjusting temperature, checking equipment, optimizing process conditions, etc. 

The following are some common film blowing machine problems and their solutions:

Film bubble instability:

Adjust the extrusion temperature to ensure uniform air volume around the cooling air ring to prevent and reduce interference from external airflow.

Adjust the extrusion temperature to avoid being too low or too high to ensure uniform cooling of the film bubble.

Poor heat sealing performance of the film:

Adjust the air volume of the air ring to increase the dew point and reduce the molecular stretching orientation caused by blowing and pulling.

Adjust the soot blowing ratio and traction ratio to avoid excessive stretching and orientation of the film, which affects the heat sealing performance.

Rough and uneven film surface:

Adjust the extrusion temperature to ensure good plasticization of the resin.

Appropriately reduce the extrusion speed to avoid too fast resulting in rough surface.

Film leading difficulty:

Appropriately adjust the head temperature to ensure that it is not too high or too low.

Adjust the die to discharge the material evenly and ensure uniform peripheral gaps.

Bubble tube skewness:

Appropriately reduce the temperature of the body and die to avoid excessively high temperatures. Check and adjust the temperature of the head connector to ensure uniformity.

‌The bubble tube is reed-shaped:

Appropriately increase the clamping force of the traction roller and overhaul the mechanical transmission part of the traction device.

Adjust the traction speed to make it run stably.

‌Bubble tube swing:

Appropriately reduce the temperature of the machine body and head to avoid excessively high temperatures.

Improve the cooling efficiency of the cooling system and appropriately increase the wind pressure and air volume of the wind ring.

Through the above methods, various problems encountered by the film blowing machine during use can be effectively solved, and the quality and production efficiency of the film can be improved.