How to adjust the speed and pressure of the screw and barrel during the extrusion and film casting process?

In the extrusion film casting process, the rotation speed and pressure of the screw and barrel are crucial parameters, which have a direct and important impact on the stability of the extrusion process and the quality of the final product. The adjustment of speed and pressure is achieved through the control system of the extruder. Speed adjustment is a key operation in the extrusion and film casting process. The speed of the screw directly affects the speed of the extruder processing plastic raw materials and the thickness of the extruded cast film. Higher rotational speed can improve production efficiency, but it may also lead to a decrease in product quality, so reasonable adjustments need to be made based on product requirements and production environment. Normally, speed adjustment is based on an in-depth understanding of the extruder performance and extruded material characteristics, and is optimized based on actual production.

During the extrusion film casting process, the pressure between the screw and the barrel directly affects the fluidity of the plastic material and the uniformity of the extruded product. Appropriate pressure can ensure the stability and consistency of the extruded cast film, but too high or too low pressure may cause production problems, such as uneven product surface and uneven thickness. Therefore, precise adjustment of pressure through the extruder control system is one of the important means to ensure the quality of extruded film.

By reasonably adjusting the speed and pressure of the screw and barrel, the extrusion film casting process can be optimized and the product quality and production efficiency can be improved. The extrusion film casting process is a complex process that requires the use of advanced technology and equipment to ensure the production of high-quality products that meet the requirements.