Reasons for aluminum plastic sheet discoloration

Aluminum-plastic sheet is created by first coating the plastic layer with a specific adhesive aluminum-plastic sheet, then covering it with the aluminum layer and extruding it at high pressure. Because the aluminum plastic sheet is normally separated into three layers, the middle layer is the combustion material, and the top and bottom sandwich layers are the aluminum layer, it is also known as a three-layer composite board.

The look of aluminum composite panel decorating shall meet the national standard, with the surface clean and smooth, with five burrs, aluminum composite panel size without deviation, the thickness not being thin with the preceding thickness, and the surface spraying meeting the criteria. The outdoor aluminum composite panel should be insured against fading and color loss for a period of twenty years. The impact of flame retardant is achieved by the fireproof ability of interior aluminum composite panels.

Aluminum composite sheet browning and decolorization is primarily caused by poor panel selection. The ACP panel is split into two sections: inside panels and outdoor panels. The surface coatings of the two types of panels differ, allowing them to be used in different settings.

Vinyl coatings are typically sprayed on the surface of room panels. This coating is unsuitable for the severe outdoor natural environment. When used outside, it hastens the aging process of aluminum plastic sheets, resulting in yellowing and discoloration. A fluorocarbon component is used in the surface coating process of the outdoor aluminum composite panel. The surface-coating aluminum composite panel with fluorocarbon can be used outside and is resistant to UV rays, high and low temperatures, and aging. It will not fade or discolor after twenty years of use. However, the price of outdoor aluminum composite panels is significantly more than that of indoor aluminum composite panels. To increase profits, some building units or contractors would employ indoor aluminum composite panels as outdoor aluminum composite panels, which causes the aluminum composite panels to fade and lose color.

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