Abstract: A process for feeding an injection molding machine including polyester processing with a plastic material to be processed comprising the steps of placing the plastic material to be processed into a container having two opposed open ends and closing these open ends with removable covers. There is provided a frame which is pivotable between intake and discharge positions around an axis supported between a pair of spaced parallel surfaces and there are means on the frame for carrying the containers. The closed container is placed on the carrying means in an intake position and the covers are retracted from the container ends. The swivel frame is pivoted to displace the open ended container of plastic material between the two parallel spaced surfaces from the intake position into a discharge position at the feed cylinder of the machine. The parallel surfaces are spaced the length of the container.

Abstract: The material containers filled with a polyester material are moved in the feed device from an intake position to a discharge position by pivoting 180.degree. with the aid of a swivel frame. In the discharge position the material container is in a coaxial position between the feed cylinder and the retracted feed ram. For emptying, the feed ram passes through the hollow, cylindrical material container, which is open on both front ends, and plunges into the feed cylinder to press the material into the plasticizing unit of the injection molding machine. The material container thus forms a part of the feed cylinder and the feed ram is simultaneously used as a discharge piston, as a result of which the usually necessary, additional discharge devices and the storage space of the feed cylinder can be eliminated.