Helium compressor What is gas-assisted injection molding?

Gas-assisted injection molding, also known as gas injection molding, is a new injection molding process.

It is one of the most important developments in injection molding industry since the advent of reciprocating screw injection machine.

Gas-assisted injection molding is an extension of injection molding, which is developed on the basis of injection molding technology and structural foam injection molding

It can also be regarded as a certain compound of injection molding and hollow molding, in this sense, it can also be called "hollow injection molding".

The principle is to replace the resin in the cavity with gas with relatively low pressure in the original pressure maintaining stage of injection molding.

Gas-assisted injection molding can be realized only by adding an air supply device to the existing injection molding machine.

The gas supply device consists of an air pump, a high-pressure gas generator, a gas control device and a gas nozzle.

The gas control device uses a special compressor to continuously supply gas, and uses an electric control valve to control the pressure to keep constant.