Process for the injection molding of non-precatalyzed polymerizable resins at high-pressure and flow

Claim 1

In a process for the injection molding of at least one non-precatalyzed, polymerizable monocomponent or hybrid resin at high pressure and flow which comprises the steps of: a) providing a mixing head comprising a cylindrical mixing chamber having a closed end and an ejectment end, and a self-cleaning molding piston; b) withdrawing from a storage tank at least one flow comprising a non-precatalyzed polymerizable monocomponent or hybrid resin; c) withdrawing from a storage tank at least one flow comprising at least one catalyst; d) injecting each flow at high pressure into the mixing chamber through at least one catalyst injection nozzle and at least one resin injection nozzle; e) discharging the resulting polymer from the mixing chamber with the self-cleaning molding piston; wherein the improvement comprises: (i) positioning the resin nozzles disposed closer to the ejectment end than the catalyst injection nozzles; (ii) injecting the catalyst through the catalyst injection nozzles angled towards the ejectment end; and (iii) injecting the resin through the resin injection nozzles angled towards the ejectment end of the mixing chamber.