Two-colour injection moulding process

The two-colour injection moulding process is a process whereby two different plastics are moulded into one set of moulds to form two materials or colours into one plastic part at the same time. The two plastics can be of different colours, soft or hard. In recent years, the demand for two-colour injection moulding has been increasing, and the applications in the home appliance, automotive, medical and industrial sectors are becoming more and more widespread. Cross-border e-commerce companies, brand companies and trading companies with special requirements for appearance are choosing two-colour injection moulding when designing their products. So, what are the areas that require special attention in the two-colour injection moulding process?

In order to ensure that the two different colours of the melt can be better fused in the two-colour mould and to ensure the quality of the plastic parts, it is necessary to adopt higher parameters to ensure a higher melt temperature, higher mould temperature, higher injection pressure and injection rate.

2, two-colour injection moulding, you need to choose a special two-colour injection moulding processing machine, equipped with the ability to rotate and change position, and the same structure of the two components into the mold.

3, in principle, two-colour injection moulding requires the use of raw materials with good thermal stability and low melt viscosity, to avoid the high temperature of the melt and the decomposition of the melt in the mould runners for too long, so the two-colour injection moulding process is more commonly used plastic raw materials such as polyolefin resins, polystyrene and ABS.