What Are The Requirements For Plastic Raw Materials In Hot Runner Injection Molding?

Because the hot runner mold has high requirements for plastics, the hot runner must be selected according to the specific plastics and their applications (the replacement of colored plastics is difficult and time-consuming). Different nozzles shall be used according to the type of plastic, and the plastic used shall meet the following conditions:

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① Plastic has good thermal stability. Plastic has a wide melting temperature range, small viscosity change, and is insensitive to temperature change. It has good fluidity at lower temperatures, and is not easy to decompose at higher temperatures.

② The melt viscosity of plastics is sensitive to pressure. When the injection pressure is not applied, the plastic part will not flow, but when a lower injection pressure is applied, the plastic part will flow.

③ The curing temperature and thermal deformation temperature of plastics are high. The plastic parts can be cured at a relatively high temperature to shorten the molding cycle.

④ The plastic has a small specific heat capacity, which can not only condense rapidly, but also melt rapidly.

⑤ Plastic has good thermal conductivity. It can quickly transfer the heat brought by the resin to the mold to accelerate the curing.

Eight Common Injection Mold Structure Classification

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Eight common injection mold structure classification One. Single parting surface injection mold When the mold is opened, the movable mold and the fixed mold are separated, so as to take out the plastic parts, which is called single parting surface mold, also called double-plate mold. It is the simplest and most basic form of injection mold, which can be designed as single-cavity injection mold or multi-cavity injection mold according to the need, and is the

Injection Mold Manufacturing Process And The Basic Processing Process Analysis

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Injection mold manufacturing process and the basic processing process analysis The injection mold manufacturing process mainly includes. Acceptance of the task. Mold design. Mold manufacturing. Mold inspection and mold trial. Mold modification and repair. Mold maintenance. I. Acceptance of tasks Plastic mold making, first of all, the customer engineers provide product drawings to the mold manufacturer, the manufacturer through the molding plastic production task requirements, the process of collecting, analyzing, digesting product data, this is

The Difference Between Injection Moulds And Plastic Moulds

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The difference between injection moulds and plastic moulds Many people can’t tell the difference between injection molds and plastic molds, and many people even think that they are the same kind of molds, just called different. Although injection molds and plastic molds are both molds, but there is a difference between them. Want to figure out the difference between the two, first and Xiaobian together to understand what is injection mold, what is plastic mold.