First, using high-quality substrates, the requirements for the surface, plate shape and dimensional accuracy of the substrates are getting higher and higher. Outdoor use such as small spangle flat hot-dip galvanized steel coils and zinc-free flat hot-dip galvanized steel coils are released in time. The emergence of zinc alloy hot-dip coils; indoor use such as electro-galvanized steel coils, film cold-rolled sheets and aluminum coils.
Second, improve the pretreatment process and the pretreatment liquid, the number of equipment is small, and the low cost has become the mainstream process, and the stability, corrosion resistance and environmental protection performance of the pretreatment liquid are continuously improved.
Third, pay attention to the development of new coatings, improve general polyester, polyvinylidene fluoride (PVDF) and plastisol, obtain super color reproducibility, anti-ultraviolet rays, anti-sulfur dioxide, and improve corrosion resistance; develop resistance to pollution and absorption Functional coatings such as heat.
Fourth, the unit equipment is more complete. Such as the use of a new type of welding machine, a new type of roller coater, perfect curing furnace, configuration of advanced automation instruments, etc.
Fifth, because cold embossing is cheaper than hot embossing, it has the characteristics of beautiful appearance, three-dimensional effect, and high strength, making cold embossing production technology a development trend.