ACP

Aluminium Composite Panels

ACP is mainly used for external and internal architectural cladding or partitions, false ceilings, signage, machine coverings, container construction, etc. Applications of ACP are not limited to external building cladding, but can also be used in any form of cladding such as partitions, false ceilings, etc. ACP is also widely used within the signage industry as an alternative to heavier, more expensive substrates.

ACP has been used as a light-weight but very sturdy material in construction, particularly for transient structures like trade show booths and similar temporary elements. It has recently also been adopted as a backing material for mounting fine art photography, often with an acrylic finish using processes like Diasec or other face-mounting techniques. ACP material has been used in famous structures as Spaceship Earth, VanDusen Botanical Garden, the Leipzig branch of the German National Library.

Benefits

  • Thermal Resistance

    Sandwich panels have λ-values from 0.024 W/(m·K) for polyurethane to 0.05 W/(m·K) for mineral wool. Therefore, they can achieve different U-values depending on the core and the thickness of the panel.

  • Joints

    The installation of a system with sandwich panels minimizes thermal bridges through the joints.

Structures

These structures made optimal use of ACP through its cost, durability, and efficiency. Its flexibility, low weight, and easy forming and processing allow for innovative design with increased rigidity and durability. Where the core material is flammable, the usage must be considered. The standard ACP core is polyethylene (PE) or polyurethane (PU). These materials do not have good fire-resistant (FR) properties unless specially treated and are therefore not generally suitable as a building material for dwellings; several jurisdictions have banned their use completely.[10] Arconic, owner of the Reynobond brand, cautions the prospective buyer. Concerning the core, it says that distance of the panel from the ground is a determinant of "which materials are safer to use". In a brochure it has a graphic of a building in flames, with the caption "[a]s soon as the building is higher than the firefighters’ ladders, it has to be conceived with an incombustible material". It shows that the Reynobond polyethylene product is for up to circa 10 meters; the fire-retardant product (c. 70% mineral core) from there to up to c. 30 meters, the height of the ladder; and the European A2-rated product (c. 90% mineral core) for anything above that. In this brochure, Fire Safety in High-rise Buildings: Our Fire Solutions, product specification is only given for the last two products.

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