A feeder according to an embodiment includes: a weight-type feeder including a hopper to which a raw material is supplied, and a discharging port from which the raw material is discharged; and a volume-type feeder including a hopper to which the raw material discharged from the discharging port is supplied, and a discharging port from which the raw material is discharged. The volume-type feeder repeats the discharging of the raw material from the discharging port and the stopping of the discharging, and the weight-type feeder continuously discharges the raw material from the discharging port to the hopper during which the discharging of the raw material from the discharging port and the stopping of the discharging are performed.

An injection molding machine performs a plasticization process causing a screw to move backward during rotation to plasticize a granular resin supplied to a heating cylinder through a hopper in accordance with a plasticization condition, a purging process causing the screw to move forward in the heating cylinder separated from a mold to discharge a molten resin plasticized by the plasticization process, a correction process causing a learned model having learned in advance to correct the plasticization condition so as to bring a waveform data piece close to an ideal state, the waveform data piece indicating a change in a physical quantity obtained during a course of discharging the molten resin by the purging process, and an injection process causing the screw to move forward in the heating cylinder in contact with the mold that is clamped to inject the molten resin plasticized by the plasticization process into a cavity.

Pressure moulding process, and related device (100), for manufacturing an article, the process comprising: providing a substrate (70) made of a composite material comprising a first polymeric material and fibres impregnated with said first polymeric material; providing a coating sheet (71); heating said substrate (70) to a temperature of the substrate (70) greater than 160 C.; subsequently, during a first compression step, compressing under pressure the substrate (70) and the coating sheet (71) between a first conformation surface (1) and a second conformation surface (2) for conforming the substrate (70) and the coating sheet (71) and for firmly fixing the substrate (70) and the coating sheet (71) to each other; during a second compression step subsequent to the first compression step, compressing under pressure the substrate (70) and the coating sheet (71) between the first (1) and second conformation surface (2) and injecting a second polymeric material in an injection cavity (3) having an outlet mouth (4) onto the first conformation surface (1), wherein a first face of the substrate (70) opposite to the coating sheet (71) is in contact with the first conformation surface (1); cooling the second polymeric material for firmly fixing the second polymeric material to the first face of the substrate (70), wherein, during the first compression step, a temperature of the first (1) and second conformation surface (2) is less than 120 C.