1. The injection temperature is adjusted according to the molecular weight of the raw material, the shape and size of the product, and the type of injection molding machine.
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2, the injection speed as far as possible to adopt multi-stage injection, the use of slow fast - slow method.
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3. Depending on the size and shape of the mouth, the plunger injection molding machine is generally 100-160MPa, and the screw injection molding machine is 70-140MPa.
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4, the molding cycle depends on the wall thickness of the product and the injection amount, under normal circumstances, the filling time is shorter, the pressure holding time is longer, and the cooling time is not caused by the deformation of the product when the mold is released.
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5, mold temperature depends on the shape of the product, thickness, appropriate increase in mold temperature is conducive to demoulding, improve product quality.
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6, product post-treatment: for complex shapes, with metal inserts, the use of very low or very high temperature products are necessary to post-treatment - eliminate or reduce internal stress.