A plastic mold hot runner system is a system used in the injection molding of plastics. The system injects molten plastic into the mold cavity through a heated runner system. This system is used to produce molded parts with intricate…
The Difference between insert molding and Double Color molding The so-called two-color injection molding refers to injecting two kinds of plastics with different colors into the same mold. It can make the plastic parts with two different colors and make…
Acrylic is also called polymethyl methacrylate (PMMA). Due to the defects , such as low surface hardness, easy scratching, low impact resistance and poor molding fluidity, the modification of PMMA appears alot. Such as copolymerization of methyl methacrylate with styrene…
How to solve the sink marks The problem of sink marks of plastic injection parts (surface shrinkage and internal shrinkage) is due to the insufficient melt replenishment when the thick part is cooled. We often encounter these sink mark problems.…
The plastic mold can be viewed as an exchanger that carries the heat of the hot melt away from the plastic mold by the circulating refrigerant. The cooling system plays an important role More than two-thirds of the thermoplastic injection…
If the plastic parts are unevenly shrinked, the internal stress distribution will be uneven. If the stress exceeds the rigidity of the plastic part, the warpage and deformation of the plastic part will be found, which will affect the dimensional…
Plastic parts are shaped and dimensionally accurate as a function of the temperature of the injection mold during filling, solidification, and production efficiency. Different kinds of plastics have different mold temperatures scope, enabling plastic melt to fill the cavity with…
PET chemical name is polyethylene terephthalate, also known as polyester. At present, GF-PET is the most used among customers, mainly for preform injection. The rheology of PET in molten state is better, and the effect of pressure on viscosity is…
Why venting important？ In a sense, the injection mold is also a displacement device where the hot plastic melt enters the mold cavity while displacing the air in the mold cavity. In fact, the air in the mold is…
Transparent parts have their special characteristics and functionality. The poly-carbonate injection molding will inevitably be used for auto part. When injection molding, we often encounter some thick-walled transparent injection molded parts. For performance reasons, these plastic parts are made of…
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