Plastic injection molding is a process that involving the use of plastic. With the granular polymer which is fed into a heated barrel, the rotation process of a screw type plunger is therefore generated by the friction between polymer granules while the screw is rotating. Nowadays, one of the most popular techniques on plastic injection is called double injection. This common technique contains several of factors to influence the quality of the molded plastic product. In this way, the selection of a plastic injection manufacturer for your molded design is crucial.
Start with material melting process, the melted plastic is forced into a mold cavity with the required shape through a nozzle. The action is finished by the screw rotation action, and then the mold is waited to be cold, sometimes you will need cooling channels to run through it. After the cooling, the molten plastic will be solidified while the mold cavity is filled. The whole double injection process is simple, and with the fact that the plastic is not expensive, it can be manipulated into any shape. So you can prepare more extra shape in hand to handle any failure during the manufacturing.
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