Method and apparatus for internally and externally coating enclosed metallic structures
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United States of America Patent
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Mar 17, 1998
Grant Date -
N/A
app pub date -
Mar 27, 1995
filing date -
Mar 27, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process and apparatus for internally and externally coating enclosed structures with polymeric materials are provided. In general, the process includes loading a polymeric material into the interior of an enclosed structure. The enclosed structure is then heated and rotated until a polymeric lining is formed within the structure. A second coat of polymeric material may be applied to the exterior surface of the enclosed structure while the enclosed structure is at a temperature sufficient to melt the polymeric material. The enclosed structure can include tanks, drums, barrels, pipes, and the like. In one embodiment, an apparatus having a plurality of arms is used to rotate the enclosed structures between stations corresponding to different steps in the process. The apparatus can include a cooling system for cooling the arms during operation.
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