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US 6,474,574 B1Granted
Process for removing paint from polymeric materials
OwnerMichael Montgomeryinventor
Life of this patent
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Abstract
Process and apparatus for separating a coating from an elastomeric material with the use of an extruder.
Claims7
A method for the separation of a paint coating from the surface of a polymeric material using a cooled extruder, the extruder having a clearance between the outer periphery of a screw and the inner surface of a barrel within which the screw rotates which comprises:
- introducing the material into the upstream end of the extruder;
- moving the material from the upstream end to the downstream end through the clearance, which clearance diminishes from the upstream end to the downstream end;
- separating the paint coating from the polymeric material by shearing the paint from the polymeric material;
- maintaining the temperature of the material below its melting point;
- and
- discharging the separated polymeric material from the paint material as shredded material.
3 more elements
Dependencies are inferred from the claim text.