How to Correctly Address Film Wrinkles During Film Blowing Machine Operation

Film wrinkles are a common issue in plastic film production, which can affect product quality and production efficiency. This article answers key questions about why such wrinkles occur and how to fix them, providing practical guidance for production work.
 

What Are the Common Causes of Film Wrinkles in Film Blowing Machine Production?

Raw Material Factors

Raw material quality directly impacts film formation. If the raw material has uneven humidity or contains impurities such as small dust particles, it will lead to inconsistent melting during processing. This inconsistency causes uneven thickness of the extruded film, eventually resulting in wrinkles.
 

Equipment Setting Factors

Temperature control of the machine is critical. If the temperature of the film-forming section is too high or too low, the film will cool or stretch unevenly. For example, overly low temperature makes the film hard and easy to fold along the edge, while overly high temperature causes the film to stick and form wrinkles.
 

Operation Factors

Improper tension control during film winding is another key cause. If the tension is too tight, the film will be stretched excessively and shrink back to form wrinkles; if the tension is too loose, the film cannot be wound neatly and may overlap slightly, leading to random wrinkles.

What Practical Methods Can Solve Film Wrinkles?

Optimize Raw Material Preparation

Before using raw materials, check their humidity and purity. Dry the raw materials with a professional dryer if humidity is too high, and filter out impurities to ensure the raw materials are in a stable state for processing. This reduces the risk of wrinkles caused by material issues.
 

Adjust Equipment Parameters

Calibrate the temperature of the film-forming section according to the type of raw material. Refer to the equipment’s standard operation guidelines to set the appropriate temperature range. Additionally, check the alignment of the machine’s rollers regularly before production to ensure they are level, which helps the film move smoothly without folding.
 

Standardize Operation Steps

Train operators to master proper tension control skills. During winding, adjust the tension gradually based on the film’s thickness and flexibility. Avoid sudden changes in tension, as this prevents uneven stretching and subsequent wrinkles.
 

Conclusion

Film wrinkles in production are mainly caused by raw material issues, improper equipment settings, and non-standard operations. By optimizing raw material preparation, adjusting equipment parameters, and standardizing operations, these wrinkles can be effectively resolved.

If you want to learn more about equipment that supports stable film production and meets different processing needs, you can visit the company's product page  to get detailed and professional information.