Key Points in Mold Processing for Injection Molding Suppliers

The application of injection mold processing is becoming increasingly widespread, and the number of injection mold suppliers continues to grow. So, what are the key points that need special attention when processing injection molds? Below, the editor from DAYIN Plastic will provide a detailed introduction.

First, the technicians at injection mold factories need to ensure that the injection molding material is in a molten state with the lowest viscosity inside the injection molding machine’s barrel. When the molten plastic passes through the narrow sections of the nozzle and mold runner, the temperature can quickly rise from 70-90°C to around 130°C, reaching a critical curing state. This is the point where the material’s flowability is optimal. At this stage, the injection pressure is typically between 118-235 MPa, and the injection speed is generally 3-4.5 m/s.

Secondly, thermosetting plastics typically contain more than 40% filler, which results in higher viscosity and frictional resistance, thereby increasing the injection pressure accordingly. In fact, nearly half of the injection pressure is consumed by the frictional resistance within the gating system. Additionally, during the curing reaction, the raw material releases water and gases, so the mold cavity must have a well-designed ventilation system to prevent defects such as bubbles from appearing on the surface of the injection-molded parts.

DAYIN Plastic Products Co., Ltd. has specialized in mold manufacturing for 30 years. As a professional OEM/ODM manufacturer, we provide one-stop services and excel in optimizing product structures to reduce mold opening and injection molding costs. Our company has a complete product design and manufacturing team, offering exceptional product design services. Equipped with advanced mold processing equipment and extensive mold-making experience, we provide manufacturing services for various plastic products. Our production base spans 50,000 square meters, with over 50 R&D personnel and more than 100 injection molding machines, committed to delivering high-quality manufacturing solutions to our customers.