Coated Aluminum Coil Suppliers

Coated aluminum coil suppliers offer color coated aluminum coil product meet all your demands. While looking coated aluminum coil for sale on the market, there are so many color coated aluminum suppliers, how can we select right product? Here we will introduce two methods for you to choose color coated aluminum product.

1, Coating gloss options

Gloss is not an indicator of coating performance, just like color, it's just a characterization. In fact, paints (coatings) are relatively easy to achieve high gloss. However, the high-gloss surface is dazzling and the high reflectivity of sunlight during the day will cause light pollution (many glass curtain walls are not used now because of light pollution). In addition, the high-gloss surface has a small friction coefficient and is easy to slip, which is easy to bring safety hazards during roof construction. The aging of the color coated aluminum coil when it is used outdoors is the first sign of loss of luster. When maintenance is required, it is easy to distinguish between the old and new steel plates, resulting in poor appearance; if the back paint is high-gloss, it is easy to produce halo when there is light indoors. Visual fatigue of personnel. Therefore, under normal circumstances, color coated aluminum sheets for construction use medium and low gloss (30-40 degrees).

2, Choice of coating thickness

Microscopically, the coating is a porous structure. Water and corrosive media (chloride ions, etc.) in the air will invade through the weak part of the coating, causing sub-film corrosion, and then the coating will foam and peel off. In addition, even with the same coating thickness, the secondary coating is denser than the primary coating. According to coated aluminum coil suppliers test results, the front coating of 20μm or more can effectively prevent the intrusion of corrosive media. Due to the different anti-corrosion mechanisms of primer and topcoat, not only the total film thickness should be specified, but also the primer (》 5μm) and the thickness of the topcoat (>15μm), only in this way can the corrosion resistance of different parts of the color coated aluminum sheet be balanced. PVDF coated aluminum products require thicker coatings, because of the longer service life guarantee. The requirements for the back coating depend on the application, and the sandwich panel requires only one coat of bondable primer. The formed aluminum plate also requires two layers due to the indoor corrosive environment. The thickness is at least 10 μm or more.