How to judge the quality of color painted aluminum coil

    　A color painted aluminum coil is a type of decorative aluminum coil, featured by beautiful appearance, durable surface, light body, high strength, strong temperature resistance, good fire resistance, strong acid resistance, good sound insulation, easy maintenance, easy cleaning, low cost and good decorative effect. As a newly popular material for interior and exterior wall decoration, the color painted aluminum coil is regarded among top three curtain wall materials together with stone and glass, drawing increasing attention of people in the construction industry. However, not all purchasers in the construction industry are clear about tips in judging the quality of color coated aluminum coil rolls.
    color painted aluminium coil
    　　People usually first focus on properties of a pre-painted aluminium coil in their purchasing task, which is perfect, but not so perfectly carried out in practice. Some properties can be tested, but others not. For example, you demand 5005 H24 color coated aluminum coil with a color number, and your supplier has to supply as you require, but if your only requirement is that “the coil must last for 15 years above”, it’s not so testable, for you won’t be able to accuse a supplier of poor quality 10 years later when the coil gets corrosive, for the company may have shut down by then. Thus, a better way is to give a clear specification that guarantees the service life as you need.
    　　In addition, qualified color painted aluminum coils must not have obvious indentations, missing coatings, or penetrating coating damage on the surface, and ripples, scratches, and blisters are not allowed, either. Except these obvious defects, you have to check whether there is any color difference, which is inconspicuous but visible, anyway. If you are no careful enough, it will affect the final decorative effect in application.
    　　At present the color coated aluminium coil rolls for curtain walls can also be treated by electrostatic spraying. The powder spray coating materials are mainly polyurethane, polystyrene resin, epoxy resin and other materials with high color retention pigments. Dozens of different colors of spray powder and decoration can be obtained.

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