Coil Coating: The Advanced Finishing Technology

摘要

Coil Coating is an advanced finishing technology available for different metal substrates,specifically steel and aluminum, with several millions of square meters processed each year.Born in the 60's, the coil coating technology has gained interest in the market in the late 80's and90's and it's now booming due its peculiarities both technical as well as environmental and in termsof energy.The Coil Coated product is used in many different applications' fields: architecture, with facades,cladding, industrial and residential roofing, shutters: transportation, with caravan, train interiors;industry, with caps, closures.The same application technology is widely used for canstock - body, ends and taps: the processconcept, being the same, though with remarkable differentiation in terms of speed, metal gauges,application systems and paint qualities (water based, low gauge and highly diluted).The process and the product are both very complex: the Product consists of a combination mergingmetal, surface treatment and paints; the Process is thus a combination of different steps, perfectlysynchronized unique in terms of speed and contact time. Metallurgy, Chemistry, Mechanics, FluidDynamics, Energy management: this all comes together within seconds on the same line.For Aluminum, the product features depends on metal alloy - usually lxxx, 3xxx and 5xxx, withthe most different tempers ranging from fully soft through fully hard; different paint types andqualities, ranging from standard Polyester, through the newly developed HDPE and Polyurethanewith / without Polyamide to high quality PVdF and Fluopolymers.The presentation will detail these technical features highlighting the significant differences betweentraditional finishing and Coil Coating