4.Precision Molding Operations

Extrusion Molding: After the plastic melt is formed, the screw pushes the melt through a carefully designed and high - precision processed die at a stable rate. For example, when producing PE plastic sheets, after the melt is extruded through the die, a uniform sheet with a specific thickness and width is formed. By precisely controlling parameters such as die temperature and screw speed, the thickness accuracy of the sheet can reach ±0.01mm, meeting the strict requirements of customers for thickness accuracy. Calendering Molding (Applicable to Some Plastics): For some plastics such as PS, the plasticized melt enters the calender. The calender consists of multiple sets of rollers, and each set of rollers operates at a precisely set speed difference and pressure. Under the continuous rolling of the rollers, the plastic melt is gradually pressed into a thin and flat sheet. The surface finish of the sheet can reach a mirror effect, meeting application scenarios with extremely high requirements for appearance.