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(1) What are sink marks (appearance)? Sink marks refer to the surface depression caused by resin shrinkage. After the crystalline resin is cooled and solidified, …

Sink Marks, plastic injection molding defect Read More »

(1) What is bubble (appearance)? Bubble refers to the phenomenon in which the surface of a molded product  bulges. Bubbles are prone to occur in …

Injection molding defect bubbles Read More »

Thanks to its low price, inherently anti-inflammatory features, great hardness and rigidity, as well as the outstanding resistance to chemicals and the shrinkage as low …

PVC plastic injection molding process Read More »

1.      PP – Chemical Name: Polypropylene, Shrinkage Rate: 0.012-0.018%; Relative Density: 0.9-0.91 g/cm3 2.     The appearance of PP: White, translucent and waxy when uncolored; natural color, cylindrical …

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Nylon (polyamide, abbreviated as PA) refers to a plastic composed of polyamide resins, which can be obtained by polycondensation of diamines and dibasic acids, or …

Nylon PA plastic injection molding material Read More »

In PC plastic injection molding process, the choice of moisture control and molding conditions are the two most important factors that affect the quality of …

Polycarbonate (PC) injection molding conditions Read More »

ABS Plastic Resin Introduction ABS(Acrylonitrile Butadiene Styrene ) is one of the five major synthetic resins, which is excellent in resistance to impact, heat, low …

ABS, an Engineering Plastic for injection molding Read More »