What is the role of gas in injection molds

As a flowing medium, gas has properties that liquids do not have, that is, gas can be compressed. If there is no container restriction, the volume of gas will not be restricted. It is because of the special properties of gases that they are widely used in the industrial field. For example, gases can act as a medium for heat transfer: in power plants, gases can be used to transmit force. Due to the wide range of air sources, most of the atmospheric composition is nitrogen, so if there is no special demand in the industry, compressed air, nitrogen, etc. can be used as the required gas, which will help reduce pollution in industrial production and can be recycled.
Mold, process and forming resin material are the three core components of injection molding technology. After the resin material is selected, the design and process control of the injection mold have a direct impact on the quality of the molded product. With the development of science and technology, gas is also used in injection mold structure and process control. For example, the release mechanism in the injection mold can be ejected by gas to realize the release action, and the cylinder can be used to realize the reset action; in the process control , Compressed nitrogen is introduced into the cavity during the re-forming and filling stage, which plays a role in maintaining pressure.
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