2K and 3K Molds Injection Machines
Molds 2K and 3K Molds (Double and Triple Shot tools) Injection machines are also adapted from a standard vertical injection molding machine, By adding a set of sol and feed injection system to achieve the AB two blocks of alternating injection once completed double color injection molding.
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Product Introduction
Molds 2K and 3K Molds (Double and Triple Shot tools) Injection machines are also adapted from a standard vertical injection molding machine, By adding a set of sol and feed injection system to achieve the AB two blocks of alternating injection once completed double color injection molding.
The characteristics of injection molding of two-color mould are as follows:
1. The two-color injection molding machine is composed of two sets of plasticizing injection devices with the same structure and specifications. The nozzle should have a special structure according to the needs of the production mode, or it should be equipped with two molds with the same structure which can rotate and transpose. When plasticizing injection, it is required that the melt temperature, injection pressure, injection melt volume and other process parameters in two sets of plasticizing injection devices should be the same, and the fluctuation difference of process parameters in two sets of plasticizing injection devices should be minimized as far as possible.
2. Plastic products made by injection molding of double-color moulds should be made of raw materials with good thermal stability and low melt viscosity, so as to avoid decomposition due to high melt temperature and long residence time in the flow channel. Polyolefin resin, polystyrene and ABS materials are the most widely used plastics.
3, double color mold injection molding plastic products in injection molding, in order to make two different colors of molten can be well fused in the mold during molding, ensure the molding quality of injection products, should use higher melt temperature, higher mold temperature, higher injection pressure and injection rate.
4. Compared with ordinary injection molding plastic products, the melt temperature and injection pressure of the two-color mold should adopt higher parameter values. The main reason is that the flow channel of the two-color mold in injection molding is long, the structure is complex, and the flow resistance of the injection melt is large.
