Mold
Traditionally, molds have been expensive to manufacture. They were usually only used in mass production where thousands of parts were being produced. Molds are typically constructed from hardened steel, aluminum and beryllium copper alloy. The choice of material to build a mold is primarily one of economics. Steel molds generally cost more to construct, but their longer lifespan will offset the higher initial cost over a higher number of parts made before wearing out
Injection molding is the process of making polymers. It is considered a great branch of science because it helps to shape plastic into useful objects. Plastic can be shaped by various techniques but injection molding is the most common method of shaping plastic resins. Large machines called injection molding machines accomplish injection molding. Plastic parts are formed by forcing molten material into a mold where it first cools and then hardens. The molded shape produced is a reverse image of the mold tool. Injection molding is considered a low cost technique for creating both simple and complex plastic parts.
Automotive molding
Automotive Molding (car body molding) is protective and decorative moldings, Car moldings include side body molding, lower body molding, door moldings, window moldings, footrest molding, etc. Various car moldings on the car body. must have high scratch resistance, weather resistance and gloss matching that of the car body.
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