What is the difference between two-color mold injection molding and two-shot injection molding?

How are the plastic products of various colors we see made? For this question, two-color injection molding, two-shot injection molding and two-shot injection molding can both produce such products, so what is the difference between two-color mold injection molding and two-shot injection molding?

1. Two-color injection molding, also known as two-color mold injection molding, is to inject two plastic materials on the same injection molding machine and form them in two times, but the product only produces one mold, which is usually completed by a set of molds, which requires a special two-color injection molding machine.

Two-color injection molding: real two-color mold, the product is rotated 180 degrees to get another material, that is: the same rear mold, different front mold. If there is a requirement for production capacity, it is best not to consider secondary injection molding, because the efficiency is low and not high.

2. Secondary injection molding, also known as packaging mold injection molding, is that two plastic materials are not necessarily injected on the same injection molding machine, and are molded in two times; the product is taken out of one set of molds, and then put into another set of molds for secondary injection molding . Therefore, in general, this molding process is usually completed by two sets of molds, without the need for a dedicated two-color injection molding machine.

Secondary injection molding is to make a colored plastic part on a single-color injection molding machine, and then manually put the product into it to form a mold. Because it is difficult to place it manually, the product will have surface quality problems such as edging, straining, and brokenness after it comes out, and it will be scrapped. large.

Secondary injection molding is to take out a part of the product for injection molding, and then put it into another injection molding machine for injection molding. The efficiency will be slower and the cost will be higher. But if the quantity is small, the cost will be low; two-color injection molding is not only a simple combination of two or more color plastics, but also product precision, beautiful appearance, and better performance of plastics of different colors.

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