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Medical high temperature materials PEEK/PPSU/PSU/PEI customized precision mold making and injection molding. PSU Medical parts mould are quite different from ordinary injection mould. PSU is a high-temperature transparent plastic with poor flow. When selecting mold steel materials, you need to choose full-hard steel materials. Transparent products need to choose stainless steel full-hard steel materials. Ordinary The use of sharp point hot nozzles is not recommended. Medical coloring generally uses the original color.
Material barrel temperature: On the premise of avoiding degradation of raw materials, the barrel temperature can be appropriately higher. The barrel temperature is usually controlled at 320~380°C. Plastic parts are large, the thickness is small, the process is long, and the molding cycle is short.
Mold temperature: Due to PSU good thermal stability and high viscosity, high mold temperature is suitable. Usually, the mold temperature is controlled at 90~150°C. Generally, the mold temperature of products with medium thickness (2.0~2.5mm) can be controlled at 90~100°C; while products with long flow channels, thin walls, small cross-sectional areas, and complex structures, The mold temperature can be increased to the injection pressure: PSU molding often requires higher injection pressure. For screw injection molding machines, the injection pressure is 100~140MPa, while for plunger injection molding machines it is 20MPa higher. If the injection pressure is too low, surface ripples, dents, bubbles, etc. will easily appear on the product, and the mechanical strength will be low. If the injection pressure is too high, demolding will be difficult.
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mold making,
injection molding,
injection mould,
plastic injection mold ,
plastic molds,
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