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Coil Coating Part II - The Process

SpecialChem / Apr 6, 2005

The coil coating process is similar to those giant printing presses that produce the evening newspaper. The process doesn't stop, it runs at a constant speed and coils of metal are continuously spliced together so that the moving web is of unlimited length. Unlike newsprint however, the coils of metal need to be cleaned, treated, coated and cured before the process is complete. All coil coating lines from the oldest and most basic line to the newest and most modern line have a number of common steps or processes. These are unwinding the coil, cleaning, treating, painting, curing, cooling and rewinding the same coil for shipment to a sheeter, a slitter or a fabricator. Besides the obvious labor efficiencies, environmental benefits and energy savings; coil coated material is inherently more consistent than those products produced on a part by part basis. A basic principle of coil coated material is that the material travels through the various process sections in a continuous manner without ever stopping or changing speed. As a result, the material being coated has extremely consistent properties.

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