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Today we will tell you the composition of gating system with injection mold. The gating system, commonly known as the runner system, is an inevitable passage, in which the molten plastic material ejected from the nozzle to the mold cavity.This system mailnly includes primary runner, sub-runner, gate and quench well.
- Primary runner
Known as the sprue,primary runner is the flow path from the nozzle to the contact part of bushing, which is the first part for the molten plastic flowing through the mold.
According to the design of injection mold, the sub-runner can be divided into first runner and secondary runner.The sub-runner is the transition area between the primary runner and the gate, which can make the flow direction of the molten plastic obtains a gentle transformation. For multi-cavity mold, it has the function of distributing plastic to each mold cavities evenly.
Also known as the feeding inlet, it is a narrow passage between the sub-runner and the mold cavity, and it is also the most short and thin part of the whole system. It plays a role of accelerating the flow of plastic: The high shear rate can make the plastic flow well and the viscous heating can also enhance the material temperature and reduce the viscosity.
After molding, the gate will solidified the seal immediately, which prevents plastic material returns and pressure decrease too fast from making the molding product shrinked and sunk. It is convenient to cut off and separate the plastic parts from the runner system.
- Quench well
It is also called the cold material cave. It plays a role of storingthe cool plastic wavefront th the initial stage of complement filling, and preventing cold material into the mold cavity directly from disrupting the filling quality or blocking the gate. Quench well usually set at the end of the primary runner, but if the length of the sub-runneris too long, quench well should be set up at the end of the sub-runner.
About PTJMould Industrial Company Limited
PTJmould is a manufacturer of plastic molds- injection mold, die casting moulds, plastic blow molding, rotational molding, medical plastic injection molding, two shot plastic injection molding, insert molding, overmolding, metal injection molding, micro injection molding, powder injection molding, ceramic injection molding, liquid injection molding, husky injection molding, household mold, casting mold, die mold tool, custom molds, china moulds, rapid prototyping tooling, plastic prototyping tooling, punch press tooling, die and tooling for mobile/ cell phone parts, automotive parts, vacuum cleaners, rechargeable tools, telephones, copiers, computers, multimedia speakers, and many other electronic products and household appliances. And also a plastic product manufacturer- plastic parts, plastic water tank, plastic balls, plastic containers, plastic buckle, plastic anchor, plastic hanger, plastic spoon, plastic pipe fitting, plastic tumble, plastic tableware, plastic cups, plastic bottles, plastic tray, plastic cosmetic container, plastic case, plastic food container, plastic chairs, plastic caps, plastic cap closure, plastic tubes, plastic water pipes, plastic knobs, plastic tubing, plastic utility boxes, plastic racks and so on.
Link to this article：COMPOSITION OF GATING SYSTEM WITH INJECTION MOLD MAKING IN PLASTIC MANUFACTURING
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