Mixing nozzle to the homogeneous mixing of several reaktionsfaehiger, flue polyethylene components

摘要

A dispensing nozzle is disclosed for use on a mixing head of the type employed in blending and dispensing polymerizable liquid components, especially in the manufacture of foamed plastic products. The nozzle is continuously self-cleaning without need for solvent flushing, making possible long periods of operation free of down-time for removal of accummulated, adherent polymerized material within the nozzle. The characterizing features of the nozzle are a frustoconical walled housing within which a spiro-helical finned rotor is spun to properly blend the separate liquid components prior to discharging the resulting mix into molds. The housing and rotor are configured to produce the necessary homogenization of the liquid components with minimum adverse effect on the physical cell configuration of the resulting polymerized foam, as well as minimizing internal build-up of polymerized material.