The present invention relates to a wood-plastic composite physical micro-foaming injection molding machine and molding process, falling within the field of wood-plastic composite production equipment. It comprises a twin-screw extruder and an injection molding machine, characterized in that the twin-screw extruder includes a barrel with two screws installed therein. A hopper is positioned at the input end of the barrel, while a barrel front section is located at its output end. A connecting body is situated below the barrel front section. A supercritical fluid injector is mounted on the side of the connecting body. The connecting body houses a first chamber, with its upper end communicating with the barrel front body via the first chamber. The side of the connecting body communicates with the supercritical fluid injector via the first chamber. A gear pump is positioned below the connecting body. The injection machine comprises an injection cylinder, an injection cylinder front body, and a nozzle. The gear pump connects to the injection cylinder front body via a check valve below it. This addresses issues such as uneven pore sizes in wood-plastic products, high brittleness, poor density, susceptibility to cracking, and excessive density during molding. The overall equipment structure is simple and facilitates processing.
Country Code: CN
Application Number: CN201911227870.1
