Plastic chair molding machines can be classified according to different molding principles and technical characteristics, such as injection molding machines, compression molding machines, etc. Among them, injection molding machine is a commonly used type in the manufacturing of plastic chairs. It uses high-pressure injection to inject melted plastic materials into the mold, suitable for producing plastic chairs with complex shapes and precise dimensions.

The melt is fed into the mold through the injection or compression system of the molding machine. In the mold, the melt is subjected to pressure, filling the mold cavity and forming the shape of a plastic chair. After a period of cooling and solidification, the melt transforms into a solid plastic chair. Finally, open the mold and take out the formed plastic chair.