Process of making injection moldings and injection mold for carrying out the process

Abstract From the Canadian patent

An injection mold comprises two or more mold sections, which enclose a cavity for molding an injectionmolded part. The mold cavity is adapted to be supplied with the molding material through at least one entrance opening. The injection mold is maintained at a temperature at which the molding material is set. Said molding material is injected in a liquid state at a greatly differing temperature. To simplify the injection molding operation to avoid damage by the removal of sprues and to accelerate, the manufacture, the molding material is injected through the entrance opening directly into the cavity by means of at least one injection nozzle. The injection mold comprises an injection nozzle …