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Apparatus for powder coating welding cans

  • US 5,997,643 A
  • Filed: 07/23/1997
  • Issued: 12/07/1999
  • Est. Priority Date: 02/18/1994
  • Status: Expired due to Fees
First Claim
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1. A system for coating the interior surface of a hollow container body moving along a predetermined path through a can forming machine with a powder coating material, the can forming machine having a welding arm, comprising:

  • a) a delivery passage extending through said welding arm for transporting a flow of air-entrained powder from a source of said powder;

    b) a coating gun mounted to said welding arm and connected to said delivery passage, said coating gun spraying air-entrained powder within said hollow container body to form a coating of said powder on said interior surface of said hollow container body; and

    c) an offset nozzle mounted within an outlet opening of said powder gun to form a continuous annular spray opening with an enlarged portion for applying powder onto said interior surface of said container body.

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