Shenzhen plastic mold manufacturers, what are the processes involved in plastic injection molding?
Plastic injection molding is a complex process that involves multiple key elements and considerations. This process includes various steps, with each step playing a crucial role in determining the quality of the final product. Let’s take a look at the processes and considerations involved in plastic injection molding.
1. The molding cycle of injection products is a crucial aspect, which includes injection time and product cooling time. The effective control of these two times directly impacts the product’s quality. Before starting the injection production, it is essential to determine the molding cycle of the product through sample patterns and other methods to ensure the final product meets quality standards.
2. The temperature of the injection mold is also a critical aspect to pay special attention to. Different plastic particles have varying crystallization temperatures and speeds, and product aesthetics, deformation, dimensions, and mold requirements differ accordingly. Therefore, when dealing with different plastics and various product requirements, the temperature control of the injection mold will also vary.
3. The injection pressure of melted plastic is also crucial. Plastic faces significant resistance as it fills the mold cavity, so the injection pressure directly affects the product’s dimensions, weight, density, and appearance. Any deviation in these factors can result in defective products, necessitating injection engineers to reasonably determine and control the injection pressure based on various product factors.
4. The injection speed is another parameter that requires careful adjustment. The speed of injection directly influences the appearance quality of the product and is typically adjusted by controlling the amount of oil supplied to the injection cylinder per unit time.
5. The temperature of the hopper and the melt are also factors that require strict control. The melt temperature primarily affects the flow characteristics of the melt, while controlling the temperatures of the hopper and melt is equally crucial for product quality.
Plastic injection molding involves various processes and considerations, where every detail can impact the quality of the final product. Therefore, strict adherence to process requirements and meticulous control of every aspect are essential during plastic injection molding to ensure the final product meets the expected quality standards.