Aluminum Cladding With Polykraft Moisture Barrier

2025-12-10

In the field of thermal insulation materials, traditional aluminum coils have always suffered from a shortened lifespan due to susceptibility to moisture corrosion, resulting in a persistent performance bottleneck. However, our aluminum cladding with polykraft moisture barrier, thanks to the unique "thermal bonding composite process" and breakthroughs in materials science, have successfully broken through this predicament, becoming the preferred material for international projects such as Middle Eastern oil pipelines and European chemical equipment.

Manufacturing process of aluminum cladding with polykraft moisture barrier:
Aluminum coil pretreatment: Using an imported German thickness gauge ensures a thickness tolerance of ±0.02mm, combined with ultrasonic cleaning to remove surface oil stains, providing a clean substrate for bonding.
Kraft paper activation: Imported yellow kraft paper (basis weight 80g/m², breaking length ≥6000m) is selected and treated with nano-level silane coupling agents, forming a honeycomb-like adsorption structure on the surface.
Gradient thermal bonding: Within a temperature range of 180℃-220℃, infrared heating causes micro-melting at the interface between the aluminum coil and kraft paper, combined with 300N/cm² pressure rolling, achieving 0.01mm-level penetration bonding.
Advantages: Testing shows a bonding strength of 12.5 MPa, 2.5 times the national standard requirement. We immersed samples in a 50℃ salt spray test chamber for 720 hours; upon removal, the poly-kraft paper layer remained intact, and the aluminum coil surface showed no oxidation or corrosion—a figure far exceeding the industry average.

Specifications of our aluminum cladding with polykraft moisture barrier product:
Aluminum alloys: 1060, 1100, 3003, 5005 etc. (Different alloy types can be provided according to customer requirements)
Thickness: 0.6mm, 0.8mm, 1mm, 1.2mm (Customizable according to customer requirements)
Width: 1000mm, 1200mm, 1500mm (Customizable according to customer requirements)
Length: Customizable according to customer requirements, typically 50m, 100m, or 200m rolls.
Kraft paper thickness: 80g/m², 100g/m² (adjustable according to specific requirements)
Surface: smooth, plain, stucco embossed, corrugated, etc.
Performance indicators:
Thermal conductivity: ≤0.035 W/(m·K)
Moisture resistance: ≥98%
Temperature range: -50℃ to +150℃

Performance advantages of aluminum cladding with polykraft moisture barrier:
1. Dual effect of moisture and corrosion protection
The polykraft paper layer not only blocks moisture, but its unique lignin component can also neutralize acidic gases. In a field test at a chemical plant in Saudi Arabia, after 8 years of continuous use, our aluminum jacketing with polykraft moisture barrier showed only a 0.03mm thickness loss in the aluminum coil, while ordinary aluminum coils showed pitting and perforation after 3 years under the same environment.
2. Significantly improved mechanical properties
Through an embossing process, an orange peel pattern is formed on the surface of the aluminum cladding coil, increasing the tensile strength of the material to 185MPa, which is 1.7 times that of flat aluminum coils. In a pipeline wrapping project in the Norwegian North Sea oilfields, our product successfully withstood the impact of ice crystals at -40°C without cracking or deformation.
3. Revolutionary optimization of construction efficiency
Our unique "2mm edge allowance design" leaves uncoated areas on both sides of the aluminum roll jacketing, eliminating the need for additional stripping of the moisture-proof layer during installation. In a renovation project at a German thermal power plant, the construction team increased the daily laying area from 300㎡ to 800㎡ and shortened the construction period by 60% after using our product.
4. Continuously leading environmental performance
Utilizing water-based environmentally friendly adhesives, VOC emissions are only 0.8g/L, complying with EU REACH regulations. At the end of its product lifespan, the aluminum coil has a 98% recycling rate, and the kraft paper can degrade into organic fertilizer, forming a complete green closed loop.

While the industry is still debating the choice between "moisture-proof" and "insulation," we have achieved a symbiotic relationship between these two properties in our aluminum cladding with polykraft moisture barrier product through innovation. Behind every aluminum coil lies rigorous control through 23 quality inspection processes, 127 optimizations and iterations of process parameters, and an unwavering commitment to "quality is life." Choosing our aluminum cladding for insulation products is not just choosing a material, but also choosing a reliable promise that transcends climate zones and time.

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