POM

Development History  of POM 1. Around 1955, DuPont, the US obtained formaldehyde homopolymer from formaldehyde polymerization, i.e., POM-H, with the trade name of Delrin. 2. In 1960, Celanese Corporation in the US started from paraformaldehyde to produce a copolymer with a small amount of dioxolane or ethylene oxide, i.e., POM-C, with the trade name of …

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PC

Polycarbonate (Abbr. PC) is an engineering thermoplastic with an excellent performance, boasting outstanding resistance to impact and creep, as well as great dimensional stability, heat resistance, low water absorption, non-toxicity and excellent dielectric properties. Among the top 5 engineering plastics, it is the only one with great transparency, while also being the fastest growing general …

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PP

The Characteristics of PP   PP – Chemical Name: Polypropylene; Shrinkage Rate: 1.2-1.8%; Relative Density: 0.9-0.91 g/cm3,structrual formula: (C3H6)n The appearance of PP: White, translucent and waxy when uncolored; natural color, cylindrical and smooth pellets of 2-5mm in any direction; odorless, non-toxic, and no mechanical impurities  The applications of PP: Suitable for the production of general …

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PA(nylon)

Nylon (polyamide, abbr.as PA) refers to a injection molding plastic composed of polyamide resins, which can be obtained by polycondensation of diamines and dibasic acids, or by ring-opening polymerization of lactams formed by dehydration of amino acids. Different from PP, PE and PS, PA Nylon does not gradually soften with the rise of temperature, but …

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PMMA

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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ABS

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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Slide

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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