Common problems and corresponding solutions during the extrusion process of film extruder machines

Common problems in the extrusion process of film extruder machines are multifaceted. Factors such as raw materials, equipment, operation, and post-processing need to be comprehensively considered, and appropriate solutions should be selected according to the specific situation to ensure the improvement of product quality and production efficiency. This article will introduce in detail the common problems and solutions in the extrusion process of film extruder machines from these aspects.

1. Raw material issues
(1) Too many impurities or too much water in plastic raw materials will lead to poor extrusion molding or substandard product quality.
Solution: The raw materials of the film extruder machine need to be screened or dried before production, and the quality control and inspection of the raw materials need to be strengthened.
(2) The ratio of plastic raw materials, such as improper coordination and too much or too little additives, will lead to poor extrusion molding or substandard product quality.
Solution: The ratio of raw materials needs to be reasonably controlled based on the process requirements of the product and other factors.

2. Equipment problems
(1) Modulation problems of the film extruder machine, such as improper temperature setting, blockage, poor wear of the extrusion head, etc. will lead to poor extrusion molding effects or substandard product quality.
Solution: It is necessary to adjust parameters such as the temperature of the extruder, the pressure, and the speed of the extrusion head, to ensure that the equipment is in good condition.
(2) Improper cleaning and maintenance of equipment will also affect the extrusion effect.
Solution: Clean, maintain, and inspect the film extruder machine regularly, and detect and deal with equipment faults and damage in a timely manner.

3. Operational issues
(1) The operator's lack of understanding of the film extruder machine and process requirements leads to poor extrusion molding results or substandard product quality.
Solution: Operators need to be trained to improve their understanding and mastery of equipment and processes.
(2 Poor operating environments, such as temperature, humidity, and other factors will affect the extrusion molding effect.
Solution: It is necessary to create a good production environment and ensure that factors such as temperature and humidity are within the appropriate range.

4. Post-processing issues
(1) Unskilled or improper operation of post-processing techniques such as drawing and cutting will affect product quality.
Solution: It is necessary to provide training and guidance to post-processing operators to ensure that they are proficient in post-processing technology and operate correctly.
(2) Damage or improper maintenance of post-processing equipment will also affect product quality.
Solution: Regularly inspect, maintain, and maintain the post-processing equipment, and promptly detect and deal with equipment damage and failures.

Common faults of film extruder machine

Uneven extruded film thickness: This condition can be caused by improper die design, poor material distribution, or inconsistent melt temperatures. It can result in poorer quality films with varying characteristics and performance.

Melt Fracture: Melt fracture is the development of a rough or corrugated surface on the extruded film due to high shear rates in the die. This can be caused by too high a melt temperature, too high a melt viscosity, or improper mold design. It results in a reduction in film transparency and strength.

Gel formation: Gels are small, irregularly shaped particles that may form in extruded films due to insufficient filtration of contaminants or degrading materials in the melt. Gel affects the appearance, transparency, and mechanical properties of the film.

Edge curling or wrinkling: Film edges may curl or wrinkle due to uneven cooling or tension as the film exits the die. This can be caused by improper mold alignment, cooling system failure, or incorrect processing parameters. It results in poor film appearance and performance.