Extrusion Mold

    we can do everything to satisfy customer demands. We have good relationship with Mold maker’s devising of USA SPI. We also get technical support from SPI. Paying highly attention to company management, Royalwill is strictly conforming to ISO9001 (2000) quality system and we positively promote 5S management on site to guarantee quality and meet customer demands. We are now supplying molds for domestic and oversea big corporations and have obtained good reputation for our good service. Our molds are mainly exported to countries such as USA, Canada, Mexico, Brazil, Australia, Germany, France, Italy, Spain, Korea, Japan and so on. Warmly welcome customers to visit our factory.

     We are professional in designing and manufacturing plastic moulds, hardware stamping moulds,die casting...

Various Moulds are mainly as below:

1).automobile parts and moulds,
2).household electrical appliances parts and moulds,
3).office equipment parts and moulds,
4).IT digital products and moulds,

5).other parts and moulds.

Hot Runner Molds In a three-plate mold, the runner system must be reground and the material reused. However, it is possible to eliminate the runner system entirely by keeping the material fluid. This is done by using a hot runner mold (Fig. 6-3). The material is kept plasticized by the hot runner manifold, which is heated with electric cartridges. The block is thermostatically controlled, and heated probes, controlled by thermocouples and pyrometers, are used. The material is kept fluid at the proper temperature, and the injection pressure is transmitted through the hot runner manifold and gate into the part. A probe is inserted from the runner to the gate area. There are two kinds of probes: one has no moving parts and essentially depends on the insulating properties of the plastic at the gate area to prevent it from drooling, whereas the other has a reciprocating device or other method to block the flow between each shot. A hot runner mold is more difficult to start up than a three-plate mold. It takes considerably longer to become operational. In multicavity molds, balancing the gate and the flow and preventing drooling can be difficult. The hot runner mold is highly susceptible to tramp metal, wood, paper, and other contaminants, which quickly clog up the nozzle. Various screen systems have been devised in attempts to prevent this. Cleaning out a plugged hot runner mold is a long process, and the molds themselves are relatively expensive; but they offer the advantage that in a long-running job, they provide the most economical way of molding. There is no regrinding, with its cost of handling and loss of material. The mold runs automatically, eliminating the variations caused by operators. The loss of temperature and pressure experienced with a cold runner in a threeplate mold is eliminated.