A portable single screw extruder for dispensing
A portable single screw extruder for dispensing highly viscous 100 percent butyl sealant compounds under sufficient fore force and low enough viscosity to enter any areas desired. The twin screw extruder comprises in combination: a barrel having a rotatably mounted extruding screw axially mounted therein; a power head for driving the extruding screw mounted at one end of the barrel and an extruding die having an orifice therein mounted at the other end of the barrel. An electrical resistance heater suitably insulated on the outside is surroundingly mounted on the barrel adjacent the extruding screw in order to heat sealant compound in the barrel. A port is transversely located in the barrel adjacent the drive end of the screw for introducing sealant into the barrel.
The sheet production extruder is apparatus for extruding a plastic material which comprises a barrel, a rotatably mounted extruding screw axially mounted within the barrel, means for rotating the screw attached to an end of the screw, a die having an orifice attached to the opposite end of the barrel, means for heating the barrel, and means for feeding plastic materials into the barrel adjacent the extruding screw. Preferrably the heating means is an electrical heating band mounted around an aluminum barrel, while the means for rotating the screw is an electrical motor driven power head and which forms the closure at the upstream side of the barrel. For ease of use, a handle is attached to the forward end of the barrel, while a pistol grip is attached to the rear end with an actuating trigger. A dispensing reel carrying the plastic material may be mounted on the barrel and a roller attached to the orifice end of the barrel to furnish partial support for the apparatus of this invention.
For ease of use, an outwardly extending handle (not shown) may be mounted perpendicular to the barrel at the forward end thereof, and just adjacent its beveled outside surface in any suitable manner. A bracket 62 is attached to the drive end of the barrel extending upwards in the same direction as the feed port. An outwardly extending shaft 64 is attached to the top of the bracket 62. A reel 66 is rotatingly mounted on the shaft reel and held on by any suitable means such as a wing nut. The reel 66 holds the plastic rope 42 which is drawn from the reel into the feed port by the action of the rotating extruding screw.
Having fully described my twin screw extruder and wishing to cover those modifications and variations which would be apparent to those skilled in the art but without departing from either the spirit or scope of the single screw extruder.