Cleaning and liquid contact with solids – Processes – Including forming a solidified or hardened coating for cleaning
Patent
1997-10-22
1999-05-18
Snay, Jeffrey
Cleaning and liquid contact with solids
Processes
Including forming a solidified or hardened coating for cleaning
134 17, 134 19, 134 38, B08B7/00
Patent
active
059041587
ABSTRACT:
A method of removing layers of heat cured paint buildup on supporting hangers is disclosed. The method includes coating support hangers with a layer of a thermally expandable material in a water soluble carrier and thereafter applying a water insoluble coating layer. The thermally expandable material, the carrier and the water insoluble coating are all selected so as to be relatively unaffected by the curing temperatures of the paint line where the hangers are to be used. When an undesirably thick coating of cured paint has built-up on the hangers, it is removed by heating to a temperature sufficient to expand the thermally expandable material thereby cracking the paint layers. Thereafter, the hangers are soaked in a hot aqueous solution to dissolve the carrier layer and remove the cracked, cured paint layers.
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Deboo Steven M.
Deschryver Mark J.
Minnis Ralph L.
Mitchell David B.
Wayman Gene V.
BetzDearborn Inc.
Boyd Steven D.
Snay Jeffrey
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