0.5mm 0.7mm Thickness PE/PVDF Coated Prepainted Aluminum Sheet for Metal Roofing Corrugated Panels
Product Description
Specification
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Item
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Specification
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Material
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Aluminum Alloy (1060, 3003, 3004, 5052 optional)
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Thickness
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0.5mm, 0.7mm (customizable for special requirements)
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Coating Type
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PE (Polyester) Coating, PVDF (Fluorocarbon) Coating
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Coating Thickness
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PE: 15-25μm; PVDF: 20-30μm (primer + topcoat for PVDF)
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Alloy Temper
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H12, H14, H24, H26 (customizable based on project needs)
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Width
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1000mm, 1220mm, 1500mm (max 2650mm, customizable)
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Length
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2m-6m (customizable up to 12m for large-span projects)
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Color
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RAL color code, Pantone color, or custom color (matte, high-gloss,satin finishes optional)
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Surface Finish
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Smooth, wood grain, stone grain, or brushed (customizable)
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Standards
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ASTM, JIS, DIN, EN, ISO, GB, AAMA 2605 (for PVDF)
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Certification
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SGS, ITS, BV
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Features & Advantages
PVDF Coating: Based on PVDF resin with fluorine content over 60%, featuring C-F bonds with bond energy up to 500 kJ/mol. It offers exceptional weather resistance, UV resistance, acid-alkali resistance, and salt spray resistance, maintaining stable color for over 20 years in harsh environments such as coastal high-salt-fog areas and industrial pollution zones. The coating has a pencil hardness of ≥2H, adhesion of ≥1 level, and excellent self-cleaning performance with low surface energy (18-22 mN/m), making pollutants hard to adhere.
PE Coating: Made of polyester resin, with good decorative performance, high gloss, and rich colors. It is cost-effective, with a service life of 10-15 years in temperate climates, suitable for general outdoor and indoor roofing projects. The coating adopts a single-layer baking process at 200-220℃, ensuring good processability and flexibility.
Coating Performance Comparison
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Performance Item
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PE Coating
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PVDF Coating
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Weather Resistance (Outdoor Service Life)
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10-15 Years
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20-25 Years
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UV Resistance (QUV Aging Test)
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2000-3000 Hours
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≥4000 Hours (Gloss Retention >90%)
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Pencil Hardness
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≥2H
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≥2H (Better Wear Resistance)
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Adhesion
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≥1 Level
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≥1 Level
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Acid-Alkali & Salt Spray Resistance
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Medium
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Excellent (Suitable for Coastal/Industrial Areas)
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Self-Cleaning Performance
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General
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Excellent
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Cost Level
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Economical (50%-70% of PVDF)
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Higher (Premium Performance)
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Application
Residential Buildings
Commercial Buildings
Industrial Buildings
Public Facilities
Special Environments
Production Process
Aluminum Substrate Selection: High-quality aluminum alloy coils are selected and inspected to ensure uniform thickness and stable performance.
Surface Treatment: The substrate is degreased, pickled, chromated, and dried to remove impurities and form a protective film, enhancing coating adhesion.
Coating Application: PE coating adopts single-layer roller coating; PVDF coating adopts double coating and double baking process (primer + topcoat), with precise control of coating thickness.
High-Temperature Curing: PE coating is cured at 200-220℃; PVDF coating is cured at 230-250℃ to form a stable and dense coating film.
Cooling & Cutting: The coated aluminum coil is cooled to room temperature, then cut into sheets of specified width and length according to customer requirements.
Quality Inspection: Each batch of products undergoes strict inspection (coating thickness, adhesion, color difference, flatness, etc.) to ensure compliance with standards.
FAQ
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