[1] The choice of metallic substrate[2] is determined by the dimensional, mechanical and corrosion resistance properties required of the coated product in use.
[4] The definition of a coil coating process according to EN 10169:2010 is a ‘process in which an (organic) coating material is applied on rolled metal strip in a continuous process which includes cleaning, if necessary, and chemical pre-treatment of the metal surface and either one-side or two-side, single or multiple application of (liquid) paints or coating powders which are subsequently cured or/and laminating with permanent plastic films’.
[5] The metal substrate (steel or aluminum) is delivered in coil form from the rolling mills.
The coil is positioned at the beginning of the line, then unwound at a constant speed, passing through the various pre-treatment and coating processes before being recoiled.
Two strip accumulators at the beginning and the end of the line enable the work to be continuous, allowing new coils to be added (and finished coils removed) by a metal stitching process without slowing down or stopping the line.
Backing coats are generally not exposed to corrosive environments and not visible in the end application.
[12] It is chosen for the quality, low cost, design flexibility, and environmentally beneficial properties.
Using prepainted metal can contribute to credit toward LEED certification for sustainable design.
This has numerous applications in various industries, including in: In the old days of traditional manufacturing, steel and other metals arrived at factories in an untreated and unpainted state.