The role of gas pressurization system in gas assisted injection molding

More and more plastic products are being used in social life nowadays. In order to save costs and produce better products through injection molding, most plastic product manufacturers use high-pressure nitrogen gas to inflate the products to form a hollow space, which solves the problems of product incompleteness and shrinkage while also saving raw materials, achieving a win-win effect.

In this article, the editor will briefly introduce the role of gas pressurization system in gas assisted injection molding. Gas assisted injection molding usually uses nitrogen as the assisting gas, which is an inert gas and should not change due to high pressure and high temperature. The nitrogen pressure in gas assisted injection molding depends on the site conditions, usually ranging from 30-130 bar (kg). This is mainly reflected in the wall thickness and material of the finished plastic product. For example, hangers, thick edge trays, etc. are mainly designed to save costs and solve the pressure of shrinking glue, usually ranging from 30-50 bar. Car handles, high-quality toys, and other items with relatively large internal hollows require high pressure, usually maintained at 120-130 bar. In situations where there is a pressure difference, the gas pressurization system can be classified as medium high pressure. For example, the Feentor ZTA10 can increase the nitrogen pressure inside the nitrogen generator to 80 bar. The Feentor ZTT25 can increase the pressure inside the nitrogen generator to 200 bar.

Gas assisted injection molding is mainly based on the on-site conditions and requirements. Gas assisted injection molding machines and medium high pressure gas pressurization systems can be optionally equipped. For cost saving and shrinking purposes, gas assisted injection molding machines can be omitted. Plastic product manufacturers can contact us at 18815239658 (Mr. Zhao) for differences in product pressure and internal hollow size.

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