Nozzle terminal for injectors of plastic material injection moulding apparatus

A nozzle terminal for injectors of plastic material injection moulding apparatus, comprising:

• an inner tubular body or tip defining a flow passage for the injected plastic material, and a ring nut fixed externally and coaxially to the tip,
• wherein the tip includes:
• a radially inner element made of a first material and having a proximal end and a distal end, the radially inner element defining a peripheral annular recess formed into an outer surface thereof, the annular recess having proximal and distal ends terminating at a distance from the respective proximal and distal ends of the radially inner element, and
• a radially outer element made of a second material arranged at contact with said radially inner element, the radially outer element being housed within the peripheral annular recess and being mechanically coupled therewith such that the radially outer element is arranged at an intermediate portion of the radially inner element terminating at a distance from the distal and proximal ends thereof and exposed towards the ring nut,
• wherein the ring nut is distinct from the tip and the radially outer element of the tip is an element distinct from the radially inner element, and
• wherein the distal end of said annular recess is formed by a radial annular collar of the radially inner element and the annular recess has, adjacent its proximal end, at least one projecting relief for engagement of a corresponding inner cavity of said radially outer element.