The two shapes of the two-color mold are completely different and can be made into one product respectively. In the two-color mold, the two shapes of the male mold are completely consistent and can only be made into one product. For the two-color mold, the front and rear membranes rotate according to the center and can coincide after 180 degrees. Therefore, this action needs to be checked in the design process, This point has high requirements for mold base positioning processing.

In the front mold panel of the two-color mold, the total thickness of plate a cannot be less than 170 mm, so it is necessary to check the reference data of the equipment, such as its oil film thickness, hole distance, etc. the nozzle of the three films can be designed as an automatic demoulding action. It is necessary to pay attention to whether the demoulding action of the soft rubber nozzle can be rotated. In the process of designing the master mold of the two-color injection mold, part of the wall hole can be designed to avoid the master mold at the price of the molded product, but the strength of each sealing glue must be carefully considered in the process of processing, that is, there will be no large injection pressure in the process of work, otherwise the plastic will be deformed in this case, It may lead to mistakes in the next batch of products.

In the process of injection molding, the size of the molded product can be larger, so that it can be pressed more tightly with the next mold in the next molding process, so as to achieve the function of glue waiting. Pay attention to whether the fluidity of the plastic will be impulsively formed in the next work. Good products will make it more deformed. If so, we must find ways to improve it. Before closing the A-plate and b-plate in the two-color mold, it is necessary to pay attention to whether the front mold slider and inclined top will be reset first, resulting in the crushing of the product. Therefore, it is necessary to find a way to reset the slider or inclined top of the front membrane before the two plates and membranes.

Compared with the traditional injection molding, the two-color mold in the dual material co injection molding process has the following advantages: the core material can use low viscosity materials to reduce the injection pressure. In consideration of environmental protection, recycled secondary materials can be used as core materials. According to different use characteristics, for example, soft material is used for the skin material of thick finished products, hard material is used for the core material, or foamed plastic can be used for the core material to reduce the weight. Lower quality core materials can be used to reduce costs. The leather material or core material can be expensive and have special surface properties, such as anti electromagnetic wave interference, high conductivity and other materials to increase the product performance. The appropriate combination of skin material and core material can reduce the residual stress of molded products, increase the mechanical strength or product surface properties, and produce products such as marble lines.