Coil coating is an industrial process used to produce precoated aluminium coils. There are different types of coatings: anodizing, paint, liquid or powder coating. This method is used to promote the use of aluminium in the most environmental conditions. For this reason application of coil coatings embraces two large industries: building and interior design.
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Coil coating process
Coated aluminium can be used in food packaging to manufactures containers and cans. Coated aluminium makes trays more resistant to food with an aggressive pH or high salinity. More than this, it improves the aesthetic appeal of containers, adding personalisation capabilities and enhancing in the consumers the perception of the quality of the product.
Coil coating manufacturers
Italcoat manufactures coated rolled aluminium products in different alloys and dimensions, with gauges from 40 to 400 microns, for a wide range of applications. Supported by our subsidiary IPS Industrial Packaging Solution, aluminium with gauges lower than 40 microns can be lacquered, laminated or printed with the customer’s desired graphics.
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The metal substrate (steel or aluminium) is delivered in coil form from the rolling mills. Coils weight varies from 5-6 tonnes for Aluminium and up to 20 tonnes for steel.
The coil is positioned at the beginning of the line, and then unwound at a constant speed, passing through the various pre-treatment and coating processes before being recoiled.
Two strip accumulators found 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 having to slow down or stop the line.
The following steps take place on a modern coating line:
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