Top Tips & Expert Views — Extruders

Hand held extruder guns are commonly used to rapidly fill a hole or skive with raw rubber compound during the tyre repair process.    How they work Uncured rubber compound formed into a long continuous rope is fed into the pneumatically driven worm drive which is mounted at the front of the gun. This is warmed enough to reduce the rubber viscosity but not enough to start the curing process.  Under great pressure the warmed compound is then extruded out of the end of the gun so it can be directed to fill the skive without any air bubbles being trapped...