Patent attributes
A hot runner nozzle system (500) comprising a nozzle tip (100) adjacent to a nozzle (405) in series, and a retainer (400) adjoining both the nozzle tip (100) and the nozzle (405) in parallel, the retainer (400) having a first retainer thread (435), for connection to a nozzle thread (420) to form a first seal (450) between the nozzle end (440) of the retainer (400) and a nozzle shoulder (430), a second retainer thread (460), for connection to a tip thread (455) to form a second seal (470) between the inlet end (475) of the nozzle tip (100) and the gate end (425) of the nozzle (405), a seal ring (115) for creating a gate seal (496) with a gate insert (120), and a plurality of flats (410) thereon to facilitate torquing of the retainer (400) to the nozzle (405), the torque value applied to the retainer (400) being about two to four times of that applied to the nozzle tip (100) to facilitate removal of the nozzle tip (100) independent of the retainer (400).
