A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
113/55, 117/69
A61F 13/00 (2006.01) B05C 9/14 (2006.01) B05C 13/02 (2006.01) B05C 19/00 (2006.01) B05D 7/14 (2006.01) B65H 51/14 (2006.01) B05D 3/02 (2006.01) B05D 7/00 (2006.01)
Patent
CA 1058019
ABSTRACT Lengths of polymer-coated tubing are continuously produced from steel strip by roll-forming and welding at a fast rate of speed. The welded tubing is sized, cleaned and heated to raise its temperature to that desired for applying a polymeric coating. After coating, the tubing is heated to a desired baking temperature and then cooled. The tubing is unsupported from a location upstream of the coating station until cooled. Elongated endless belts grip the tubing over a longitudinal distance of at least about two feet and pull the tubing in a controlled manner to maintain the tubing in precise spatial location throughout its heating, coating and baking.
249621
Allied Tube And Conduit Corporation
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