Abstract: In a method and an injection-molding nozzle for producing injection-molded parts from plastic with an injection mold, the plastic melt in the form of at least one ribbon-like strand of melt is injected through a nozzle slit into a cavity of the injection mold before the injection-molded part is demolded once the plastic melt has solidified. The plastic melt is exposed to heat in the region of the sprue during solidifying in the cavity and the sprue is torn off during demolding of the injection-molded part along the nozzle slit in the region of the sprue as a result of the temperature gradient between the solidified injection-molded part and the plastic melt.

Abstract: The present invention refers to an injection molding nozzle for introducing a molten plastic to a mold cavity (15) of an injection molding tool via a slot gate (2, 2, 3). The injection molding nozzle includes a nozzle core (2, 3, 3) having an elongate edge (3B) and is received in an opening (1A, 1) in a housing (1, 1). A portion of the nozzle core (2, 3, 3) is spaced apart from the housing (1, 1) so as to define a nozzle flow channel that is in fluid communication between a source of the molten plastic and the slot gate (2, 2, 3), and at least a downstream portion of the nozzle flow channel that is between the housing (1, 1) and the nozzle core (2, 3, 3) surrounds the nozzle core (2, 3, 3) on all sides.

Abstract: The invention relates to a method and an injection-moulding nozzle for producing injection-moulded parts from plastic with an injection mould, wherein the plastic melt in the form of at least one ribbon-like strand of melt is injected through a nozzle slit (2) into a cavity (15) of the injection mould before the injection-moulded part is demoulded once the plastic melt has solidified. In order to provide advantageous injection-moulding and demoulding conditions, it is proposed that the plastic melt is exposed to heat in the region of the sprue during solidifying in the cavity (15) and that the sprue is torn off during demoulding of the injection-moulded part along the nozzle slit (2) in the region of the sprue as a result of the temperature gradient between the solidified injection-moulded part and the plastic melt.