Aluminum Coil With Polysurlyn Moisture Barrier

2025-10-23

Aluminum coil with a Polysurlyn moisture barrier is a specially treated aluminum coil commonly used in construction and industrial applications to prevent moisture and water penetration. Polysurlyn is a polymer material with excellent moisture-resistant properties and is typically coated on the surface of the aluminum coil.

Parameters of Aluminum Coil With Polysurlyn Moisture Barrier:
- Thickness:
0.3-0.5mm: Suitable for indoor piping and lightweight packaging, with a low cost.
0.6-1.0mm: The mainstream choice for industrial piping and cold chain equipment, balancing performance and cost.
1.2mm and above: Suitable for building curtain walls and heavy equipment, requiring custom production.

- Alloy Materials:
1060 pure aluminum: The lowest cost, suitable for dry environments.
3003 rust-proof aluminum: Contains 1.2% manganese, improving corrosion resistance by 30%.

5052 aluminum-magnesium alloy: High strength and salt spray resistance, preferred for marine environments.
- Widths and Customization
Standard widths are 914mm and 1219mm, and can be slit to 600mm or more upon request.
Customization requires confirmation of production lead time (typically 7-15 days) and minimum order quantity (typically 2000kg).

Core Features of Aluminum Coil With Polysurlyn Moisture Barrier:
- Moisture Barrier Performance
Polysurlyn film, created through multi-layer co-extrusion technology, achieves a water vapor transmission rate (WVTR) as low as 0.005g/(m²·24h), significantly exceeding that of standard PE film (WVTR approximately 0.5g/(m²·24h)). This makes it ideal for high-humidity environments such as chemical pipelines and cold chain logistics. For example, in refinery pipeline insulation, Polysurlyn moisture barrier aluminum coils effectively prevent moisture penetration, preventing insulation failure due to corrosion of the aluminum sheet.

- Lamination Advantages
Using hot-press lamination technology, the bond strength between Polysurlyn film and coil aluminum substrates can reach over 2.5N/mm, far exceeding traditional adhesive bonding (approximately 1.2N/mm). This structure remains stable in extreme temperatures ranging from -40°C to 80°C, making it suitable for extreme environments such as pipe insulation at Arctic research stations.

- Weather Resistance and Mechanical Properties
The polysurlyn film, with a thickness of 0.07-0.08mm, can withstand over 10 years of UV exposure without yellowing. Furthermore, the aluminum substrate's yield strength of 120MPa, combined with the film's tear resistance (dyne value ≥38mN/m), makes it impervious to damage during transportation and installation.

Application Scenarios of Aluminum Coil With Polysurlyn Moisture Barrier:
- Pipeline Anticorrosion and Insulation
In the petrochemical industry, Polysurlyn aluminum jackating coils are widely used for steam pipes and storage tank sheathing. For example, a refinery use 0.5mm thick 3003 aluminum coils laminated with Polysurlyn moisture barrier, extending the service life of its pipelines from 8 to 15 years and reducing maintenance costs by 60%.

- Cold Chain Logistics Packaging
During the transportation of pharmaceutical vaccines, insulated boxes made of Polysurlyn moisture barrier aluminum coils can maintain a -20°C environment for up to 72 hours, with a temperature and humidity fluctuation of ≤±1°C. Its moisture barrier properties ensure that vaccine activity is not affected by condensation, meeting WHO cold chain standards.

- Building Curtain Wall Systems
In super-high-rise buildings, Polysurlyn laminated aluminum coils, as curtain wall backsheets, effectively prevent indoor moisture from penetrating into the insulation layer, minimizing the risk of condensation. The Shanghai Tower project used 1.2mm thick 5052 aluminum coils, which have been tested to have a moisture barrier efficiency of 99.7%.

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