Industry information

Two-color injection moulds sino double-color mould


Two-color mold is two kinds of plastic materials in the same injection molding machine, divided into two molds, but the product is only a mold.General this molding process is also called double injection molding, usually completed by a set of mold, and the need for a special two-color injection molding machine.

Two-color mold is increasingly popular in the market at present. This process can make the appearance of the product more beautiful, easy to change the color and can not be sprayed, but the cost is expensive and the technical requirements are high.

The basic information

Chinese name

Two-color injection moulds

Foreign names

sino double-color mould


The alias

Double color mold

1. The two shapes of the mother mold are different, forming one product respectively, while the two shapes of the male mold are exactly the same.

2. The front and back die of the mold must match after the center rotates 180o.Design must do this check action, this point on the mold position processing requirements higher.

3. The total thickness of front die panel and A plate should not be less than 170mm.Please carefully check other reference data for this type of injection molding machine, such as maximum volume thickness, minimum volume thickness, KO hole distance, etc.

4. It is best to design the nozzle of the three plate mold into automatic demoulding action.Special attention should be paid to the soft glue mouth demoulding action can be *.

5. In the design of the second injection of the mother mold, in order to avoid the second mother mold insertion (or rubbing) damage the first time has been formed the product glue position, you can design a part of the air.But we must carefully consider the strength of each sealant position, that is, in the injection molding, whether there will be deformation of the plastic under the large injection molding pressure, leading to the possibility that the second injection molding may have a batch front?

6. When injection molding, the size of the product for the first injection molding can be slightly larger, so that it can be pressed more tightly with another male mold in the second molding, so as to achieve the effect of sealant.

7. Note that in the second injection molding, whether the flow of the plastic will impulse the products that have been formed for the first time, deforming the glue position?If it's possible, find ways to improve it.

8. Before plate A and B are closed, please pay attention to whether the slider or inclined top of the front die will be reset and crush the product first.In this way, must think of A way to make in A, B plate first die, after the slider before the die or inclined top can be reset.

9. The water transport arrangement of the two female and male molds should be as full as possible, and balanced and the same.

In 10.99% of cases, the hard part of the product was first molded, and then the soft part was molded.Because soft glue is easy to deform