Process for controlling fluid flow during production of hollow plastic components by injection molding comprises temporally controlling the volume flow of the fluid according to the pressure of the fluid in the region of an injection point

摘要

Process for controlling fluid flow during production of hollow plastic components by injection molding comprises plastifying plastic using a plastifying and injection screw (1), introducing a specified quantity of plastic into a cavity (2) of an injection molding tool (3), and injecting fluid into the still plastic plastic composition via an injection point so that the plastic composition is pressed on the wall of the cavity. The volume flow of the fluid is at least temporally controlled according to the pressure of the fluid in the region of the injection point. Preferred Features: The volume flow of several tools can be controlled.