2K Mold
The rotary mold is composed of two-cavity and core sides, the two core sides are the same, only the cavity sides is different which the second color cavity is bigger than the first color, at the beginning of injection molding, the barrel of the two-color injection molding machine first injects the plastic into the mold cavity of the first color, after it is cured, the core side will be rotated after solid, then the first color part will be injected to the second color mold by core rotating, then the 2 shot moldbarrel will cover the first color part by injection, the two-cavity and core sides are continuously produced, then the part will be ejected out by the second color.
2k injection moldingdesign key points
- Generally speaking, the shrinkage rate of the two-color mold depends on the first color material, because the first color material has supported the outline of the plastic part, the second color material will not shrink more. As for how to determine the primary and secondary materials, there are many factors to be considered, such as the fluidity of raw materials, the shape of plastic products, and so on.
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