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Precautions for using PC plastic injection molding?
1. The injection temperature is adjusted accordingly according to the molecular weight of the raw material, the shape and size of the product, and the type of injection molding machine.
2. The injection speed adopts multi-stage injection, and adopts a slow-fast-slow method.
3. It depends on the shape and size of the mouth, the plunger injection molding machine is generally 100-160MPa, and the screw injection molding machine is 70-140MPa.
4. The molding cycle depends on the wall thickness of the product and the injection volume. Generally, the filling time is shorter and the holding time is longer. The cooling time is based on the principle of not causing product deformation during demolding.
5. The mold temperature depends on the shape and thickness of the product. Appropriately increasing the mold temperature is conducive to demolding and improving product quality.
6. Product post-treatment: For products with complex shapes, metal inserts, and extremely low or very high use temperatures, post-treatment is necessary to eliminate or reduce internal stress.