Unveiling the faults of blown film machine: common causes and solutions

In the production process of plastic film, the blown film machine serves as the core equipment, and its operating status directly affects production efficiency and product quality. However, blown film machines are inevitably prone to various malfunctions during use. This article will delve into the common causes of malfunctions in blown film machines and provide practical solutions.

In addition to the temperature control system malfunction mentioned earlier, which may lead to uneven film thickness, another common problem is the accumulation of material at the mold outlet. This is usually caused by unreasonable mold design, poor material flowability, or excessively high extrusion temperature. Accumulation not only affects the appearance of the film, but may also clog the mold, leading to downtime.

The solution to the problem of material accumulation in mold exports includes optimizing mold design to ensure smooth material flow; Adjust the material formula to improve fluidity; Reduce the extrusion temperature appropriately to avoid material overheating and decomposition. In addition, regular cleaning of molds is also an effective measure to prevent material accumulation.

In addition, the blown film machine may also experience unstable film bubbles during the production process. This may be due to unstable traction speed, poor cooling effect, or pressure fluctuations inside the bubbles. Unstable membrane bubbles can lead to uneven film thickness, and in severe cases, even cause film fracture.

To solve the problem of unstable membrane bubbles, operators should ensure a constant traction speed and avoid being too fast or too slow; Strengthen the maintenance of the cooling system to ensure stable cooling water flow and pressure; At the same time, check the internal pressure control system of the bubble to ensure that pressure fluctuations are within the allowable range.

In summary, there are various types of faults in blown film machines, but as long as we have a deep understanding of the causes of the faults and adopt scientific and reasonable solutions, we can effectively avoid the occurrence of faults, improve production efficiency, and ensure product quality. With the continuous advancement of technology, the intelligence and automation level of blown film machines will continue to improve, bringing more convenience to plastic film production.