If you are a businessman from tooling and injection molding industry, you should not ignore the Chinese market. With the rapid economic growth, it has become the center of the world’s plastic mould manufacturers and injection molding factories. But if…
The successful design and fabrication of good plastic products require a combination of sound judgment and experience. Designing good products requires a knowledge of plastics that includes their advantages and disadvantages as well as some familiarity with processing methods. Until…
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The action of the pressure holding is to continue to exert pressure to the melt plastic, in order to increase the density of plastic to compensate for the shrinkage of plastic. In the process of pressure holding, the mold cavity…
Filling stage Filling is the first step in the process of injection molding; the filling time begins from the close of the plastic mold until the 95% filling of mold cavity. In theory, the shorter the filling time is, the…
Design of branch runner Branch runner is a melt flowing way connecting the main runner and the gate, which acts as the role of diversion and turning. The branch runner system of the side gate is on the parting line…
The concept of main runner The main runner is a conical section that connects injection molding machine nozzle to the branch runner, by which the molten plastic run into the mold cavities. And its diameter is closely related to the…
The function of the mold feed system is to make the high temperature melt under high pressure go into the mold cavity to fulfill that. The style and quantity of gate and feed style often determine the specifications of plastic mold…
Design principle of ejection system Product ejection is the last step of the injection process, the ejection quality will directly affect the quality of the product, and design should follow the principles. (1) The principle of equilibrium layout: ejector pins…
Local thick wall thickness, wrong position of gates and cooling layout would lead to sink marks, trapped air, deformation and burns on the injection parts, the following will analyze some factors: Wall Thickness: The wall thickness should keep same to…