In the field of precision plastic injection molding, the appearance of black spots on parts is a common and tricky problem that can seriously affect the appearance and quality of products. To effectively avoid this issue, it is necessary to control several key aspects. Here is a detailed introduction for you.
Create a Clean Molding Environment
A clean molding environment is the fundamental prerequisite for preventing the formation of black spots. During the injection molding process, dust and impurities in the environment can easily mix into the plastic raw materials, which then form black spots when the parts are molded. Therefore, maintaining the cleanliness and hygiene of the molding workshop is of utmost importance. Regular comprehensive cleaning of the workshop should be carried out, and air purification equipment should be used to control the dust content in the air, creating a clean and dust-free space for injection molding production.
Equip with a Clean Feeding System
The cleanliness of the feeding system directly affects the purity of the plastic raw materials. Dongguan Yize Mold understands this well. Its precision plastic injection molding is equipped with an advanced automatic drying and feeding system for plastic materials. This system can accurately control the drying degree of the raw materials, preventing the formation of black spots due to moisture absorption during the injection molding process. At the same time, the automatic feeding method reduces the risk of contamination caused by manual operations, ensuring that the raw materials are not disturbed by external impurities during the conveying process and safeguarding the cleanliness of the raw materials from the source.
Use Clean Injection Molding Machines and Screws
The cleanliness of the injection molding machine and its screw plays a crucial role in the quality of the parts. If there are residual impurities or carbonized substances left from previous production inside the injection molding machine or on the screw, these substances will mix into the new plastic raw materials during the new production process, resulting in black spots on the parts. Dongguan Yize Mold Co., Ltd. attaches great importance to this aspect. Its 30-ton to 280-ton brand-new imported injection molding machines not only have excellent performance and can meet the requirements of high-temperature plastic injection molding, such as the processing of glass fiber-reinforced plastic materials (PA + 50% GF, PPS + 40% GF), PEEK, etc., but also undergo thorough cleaning of the injection molding machines and screws before each production to ensure the clean state of the production equipment and provide a solid guarantee for producing high-quality parts. In addition, the company has retained a 100-ton Fanuc injection molding machine specifically for the injection molding of white and transparent plastics, such as ABS, PC, PMMA (acrylic), etc., further meeting the needs of customers for manufacturing clean and transparent plastic parts.
Rely on High-Quality Molds
High-quality molds are the foundation for producing high-quality injection-molded products. Yize Mold has more than ten years of experience in exporting precision injection molds and has always focused its main efforts on precision mold manufacturing. With exquisite craftsmanship and strict quality control, the molds produced by the company have high precision and stable quality, which can effectively reduce defects during the injection molding process and lower the probability of black spot formation. At the same time, the company is gradually providing customers with more and better precision plastic injection molding processing services. Every step of its development is closely centered around meeting customer needs and solving customer problems, continuously improving its service level and market competitiveness.
If you are looking for a supplier of precision plastic injection molds and injection molding processing, especially in areas such as low-volume and small-batch plastic injection molding R & D projects, overmolding, in-mold metal insert injection molding, stack molds, and internal thread molds, welcome to contact us.
