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Over Molding is a kind of double injection molding process, which is usually formed by two kinds of plastic materials two times, and the product is removed after the first injection molding, and then put into another set of molds or another cavity for the second injection molding.
"Over molding" means the secondary injection molding of the product. The main overmold product includes two, one refers to the plastic inside, and one refers to the rubber outside. In overmold manufacturing, the plastic mold is first manufactured, that is, the main hard rubber mold. After it cools naturally, it is put into another mold for injection molding again, so that the two plastic parts are wrapped together in the mold. The adhesive is usually used more on the handle. Among them, the outer soft rubber is commonly used in artificial rubber, TPU, TPR, and other rubber materials, and the inside can be ABS, PC, PP, and so on. The disadvantage of the coated mold is that it is not suitable for injection molding precision two-material and multi-material injection molding products; The overmolding process cycle is relatively long, and the production efficiency is lower than that of the two-color mold.
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