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Polymethyl methacrylate, abbreviated as PMMA, is an important injection molding thermoplastic that was developed in the earlier stage. The plastic features great transparency, chemical stability and weather resistance. It is easy to dye and process, with an aesthetic appearance, thus widely applied in the construction industry.         Chemical Formula: [C5O2H8]n Structural Formula: PMMA, an important …

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1. A Brief Introduction of ABS Abbr.: ABS Full Name: Acrylonitrile Butadiene Styrene As one of the five synthetic resins, the ABS plastic boasts excellent resistance to impact, heat, low temperature and chemicals, as well as outstanding electrical properties, in addition to the characteristics of easy processing, stable product dimensions, and great surface gloss. It …

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Surface finish (polishing and texture)

Common Surface Finishes for Plastic Injection Molds include Polishing ,Thin Fire Texture ,Texture,Plating,sand blasting 1.Polishing The method to remove the convex part and machining marks on the steel surface, to obtain a smooth polishing effect, mainly realized by cutting. Whetstone, wool wheel and sandpaper, etc., are usually used mainly by manual operation.there are a popular …

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How the slide work in plastic injection mold? In a plastic injection mold, the mold opening action is leveraged to create a relative movement trend between the angle pin and the slide, so that the slide moves in two directions – the mold opening direction and the horizontal direction – to release it from the …

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Guiding system

What are the guiding and positioning mechanisms of an injection mold? Collectively speaking, the mold guiding mechanism is the component of an injection mold that aims to ensure the smooth movement and accurate reset of each moving part during mold opening and closing, so that they are not misaligned and deformed under the action of …

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Venting system

What is venting system in plastic injection mold? Venting system, also known as air vents. is a structure that allows the air in the cavity and the gating system to escape in time, and punctually involves air during mold opening and plastic product release, so as to prevent vacuum from forming between the plastic part …

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Ejection system

Product ejection is the last step in the plastic injection molding process. After a product solidifies in the mold, an effective method is needed to eject it from the mold. Product ejection cannot be neglected, and during the ejection process, the product should be protected from deformation, ejector marks, cracking and other damages. So, this …

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Mold Cooling

During the plastic injection molding process, the mold temperature directly determines the plastic product quality and the molding efficiency. An excessively high mold temperature not only extends the cooling time and reduces production efficiency, but also causes the plastic melt to lose its original performance; an excessively low mold temperature affects the melt fluidity and …

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Hot runner

A hot runner system mold is equipped with heating devices on the sprue and runners, on basis of a traditional two-plate or three-plate mold, so that the plastic in the runner is always in a molten state, so as to eliminate or reduce cold slug for the runners. Pros of Hot Runner Systems 1.Reduce the …

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Gate types

What is gate?what types of gates do we use? Injection molding gate is the last opening that allows the molten plastic to flow into the cavities ,the most common gate types in injection molding include:Side gate/edge gate,Tab gate,Fan gate,Sub gate,Ring gate,Direct gate/sprue gate,Banana gate,Pin point gate,Hot runner(Point gate,Valve gate) Injection molding gate design and location …

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