The Surface Treatment of Decorative Aluminum Sheet

1. Decorative aluminum sheets need to be surface treated before they can be put on the market

In order to meet the needs of users, decorative aluminum sheets are generally surface-treated before they can be put on the market. Therefore, the surface treatment of decorative aluminum sheets is more important. How to install decorative aluminum sheets and how to protect the surface of decorative aluminum sheets?


2. The surface treatment method of decorative aluminum sheet

(1) Anodizing: 

Aluminum alloy doors and windows have been introduced in the 1950s, and it is still a common surface treatment measure for aluminum doors and windows and colored aluminum sheets;


(2) Acrylic resin for electrophoresis after anodic oxidation: 

It was commercialized in Japan in the 1960s and used in Europe in the 1970s, and is currently mainly used in Asia. At present, the technology has developed from transparent bright film to matte transparent film and color film, and the varieties are becoming more diversified, and the industrial control and product quality are relatively stable.


(3) Electrostatic spraying after chemical conversion treatment:

Including electrostatic powder spraying and electrostatic liquid phase spraying. Electrostatic liquid phase spraying fluorocarbon resin was commercialized in the United States in the 1960s. The electrostatic powder spraying thermosetting polyester coating has been commercialized in Europe in the late 1960s, and it is still the dominant surface treatment method in European countries. Today, the sales of anodized aluminum doors and windows on the market have decreased significantly. Japan favors electrophoretic coating, and white electrophoretic coating has developed rapidly and is being used in Europe. Electrostatic powder spraying has become the preferred surface treatment method in Europe and America due to its diverse colors, convenient control, environmental protection, and excellent performance. The electrostatic powder coating market is also expanding rapidly in recent years.


(4) Paint spraying: 

usually fluorocarbon spraying. The treatment before the decorative aluminum sheet spray paint is more important. Passivation treatment is required to ensure that the paint and the aluminum sheet are tightly combined. The curtain wall aluminum sheet uses this method for surface treatment.

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