Name: Pre-painted Aluminum Coil
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Aluminum Coil,Pre-Painted Aluminum Coil

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Pre-painted Aluminum Coil

Prepainted aluminum coils are aluminum-based products where one or more layers of organic coatings (paints, films, or composite coatings) are applied to the surface of aluminum substrates via a continuous coating process. Their core advantage lies in combining aluminum’s inherent properties (lightweight, corrosion resistance, recyclability) with the coating’s decorative and functional attributes (weather resistance, color stability, scratch resistance).

Products

Product Parameters

Material

Method of manufacture

PPAL

Painted products made from aluminum and aluminum alloy steel sheets

ㆍAesthetic appearance, light weight, corrosion resistance, workability, heat reflectivity, etc

ㆍUsed as interior and exterior building materials, ceiling materials, special vehicle exterior materials, etc.

1.Degrease and clean the aluminum coil substrate

2.Chemical pretreatment to form a conversion film

3.Roll coat primer and bake to cure

4.Roll coat topcoat (with color patterns if needed)

5.High-temperature baking to cure the coating

6.Cool, then slit and wind up

Paint
	Fluorocarbon Coating (PVDF)	Polyester Coating (PE)	Silicon-Modified Polyester (SMP)	High-Durability Polyester (HDP)
Outdoor Weathering Life	15-20 years	5-10 years	10-15 years	10-15 years
UV Resistance	Extremely strong (almost no chalking)	Moderate (prone to chalking)	Relatively strong (slow chalking)	Relatively strong (slower chalking)
Salt Spray Resistance	>5000 hours (no corrosion)	1000-2000 hours	2000-3000 hours	2000-3000 hours
Cost	High (about 2-3 times that of PE)	Low	Medium (about 1.5 times that of PE)	Medium (about 1.2-1.5 times that of PE)
Flexibility	Moderate (hard coating)	Good	Good	Good
Applicable Scenarios	High corrosion resistance requirements (e.g., curtain walls in coastal areas, building facades in heavily polluted industrial areas)	Indoor or mild outdoor climates (e.g., home appliance casings, indoor decorative components)	General outdoor (e.g., non-coastal areas, such as warehouse and commercial building walls/roofs)	General outdoor environments (e.g., industrial factory walls, ordinary building roofs)