Abstract: A device for producing a thin-walled elongate body from thermoplastic material includes a removable sleeve (25) and a bush (33), the casing of the removable sleeve (25) and the bore (31) in the bush (33) are arranged eccentrically with respect to the axis of symmetry of the core and, by rotation relative to one another, a displacement of the core can be achieved both in terms of magnitude and also in relation to a deflection angle.

Abstract: A device for producing a thin-walled elongate body from thermoplastic material includes a removable sleeve (25) and a bush (33), the casing of the removable sleeve (25) and the bore (31) in the bush (33) are arranged eccentrically with respect to the axis of symmetry of the core and, by rotation relative to one another, a displacement of the core can be achieved both in terms of magnitude and also in relation to a deflection angle.

Abstract: In a hot channel multiple injection molding die, the molding spaces (15) for the workpieces are each connected to two injection nozzles (9) and the injection nozzles (9) are each connected to two molding spaces (15). The injection nozzles (9) are arranged between the molding spaces (15). Therefore, a small overall height of the lower die part (1) is produced.

Abstract: A plastic pump piston is provided for a disposable syringe, wherein the disposable syringe has a syringe cylinder which is constructed with a needle cone on one end thereof and at least one gripping plate on the other end thereof, and having a sealing element on the front end of a shaft of the pump piston. The sealing element is made of a material having a higher elasticity than the pump piston material and is molded onto the pump piston in the same mold after the pump piston is injection molded.

Abstract: The hot channel die (1) is arranged within a casing (13) filled with oil. In the hollow space (15) filled with oil, baffles (17, 19) are installed which effect a current of the oil directed toward the two ends of the die (1). For this purpose, the heating element (23) is arranged on the underside of the casing (13). The discharge sleeve (117), which introduces the liquid plastic from the feeding screw, discharges into the hollow body (115), which is mounted in a recess in the hot runner plate (105) of a hot channel injection molding die. The distribution conduits (119), which are constructed as curved tubes, are installed on the discharge sleeve (117), and lead to the side wall (121), against which the rear ends of the injection nozzles lie. The hollow space (125) is filled with a heat-conducting medium, for example oil, which is heated by a heater (127) and uniformly circulated within the hollow space (125) by convention or motorized circulation.

Abstract: An injection molding machine for the making of barrels of syringes has first and second mold sections which have confronting surfaces and one of which is movable between operative and retracted positions in which the surfaces respectively abut and are spaced apart from each other. The first section has cylindrical bores each of which is open at the respective surface and extends to an end wall adjacent a nozzle with several uniformly distributed orifices which admit heated plasticized material into the bore when the two surfaces abut. The second section has cores each of which extends into a bore in the operative position of the one section to define with the first section a cavity for reception of plasticized material. The first section has coolant-conveying channels which concentrically surround the bores, and the first section has flow restricting ports which connect the discharge ends of the orifices with the respective cavities.