Comparison between Anodized Aluminium Sheet And Roller Coated Aluminium Sheet

Comparison between Anodized Aluminium Sheet And Roller Coated Aluminium Sheet

I. Technical principle

Anodic oxidized aluminium plate:

Roller-coated aluminium:

Through the roller-coating process, a layer of coating is uniformly applied to the surface of the aluminium sheet and cured by baking. This technology can effectively improve production efficiency, while giving the aluminium plate a rich choice of colours and patterns.

II. Performance Characteristics

Processability

Anodized aluminium sheet is highly decorative, moderately hard, can be easily bent and shaped, suitable for continuous high-speed stamping, and convenient for direct processing into products. Roller coated aluminium sheet has the same good workability, but the specific workability may be affected by the thickness and hardness of the coating.

Weatherability

Standard thickness oxide film (3μm) of anodized aluminium sheet indoor use for a long time without discolouration, corrosion, oxidation, rust. The anodized aluminium sheet with thickened oxide film (10μm) can be used outdoors without discolouration when exposed to sunlight for a long time. The weather resistance of roller coated aluminium sheet mainly depends on the quality and performance of the coating. A good quality coating is effective against UV rays and various environmental factors.

Metallic Feeling

The anodized aluminium sheet surface has high hardness, good scratch resistance, retains the metallic colour of the aluminium sheet, and highlights the modern sense of metal. Roller coated aluminium sheet is covered with coating, the sense of metal is relatively weaker, but a certain sense of metal can be retained by choosing transparent or semi-transparent coating.

Fire resistance

Anodized aluminium sheet is a pure metal product, without paint and any chemical substances on the surface, it does not burn at a high temperature of 600 degrees and does not produce toxic gases, which meets the fire protection and environmental protection requirements. The fireproof performance of roller coated aluminium sheet depends on the fireproof grade of the coating material. Certain high performance coatings can provide good fire protection.

Corrosion resistance

The aluminium oxide film on the surface of anodized aluminium sheet has excellent corrosion resistance and can be used for a long time in harsh environments. The corrosion resistance of roll-coated aluminium sheets also depends on the quality and properties of the coating. High quality anti-corrosion coating can effectively extend the service life of aluminium sheet.

Colour and pattern

Anodized coloured aluminium can achieve a wide range of colours through specific technical treatments on the basis of natural colours, but the choice of colours is relatively limited. Roller coated aluminium plate is more flexible in the expression of colour and pattern, which can meet different design requirements.

Cost and application

Cost: The anodic oxidation process is relatively complex, involving more steps and materials, so the cost is higher. Roller coating process is easy to operate, can achieve large quantities of rapid production, the cost is relatively low.