Aluminium Composite Panel and it’s Evolution
Aluminium Composite Panel (ACP) has been a popular material for building facades as well as cladding for more than two decades. ACP consists of two high-strength aluminium sheets which sandwich a low density, insulating core. Hence, they are also known as sandwich panels.
The original purpose behind their design and creation was to use it as a material for signage. However, today ACP find diverse applications like wall coverings, architectural claddings, interior decorations, false ceilings, etc.
So, below is the history and evolution of ACP and how it came to become one of the most important building material used in various construction and architectural projects.
The Aluminium Composite Panel (ACP) was originally introduced as a joint-invention between companies known as Alusingen and BASF in 1969. Later Alusuisse bought Alusingen, which was eventually obtained by another international firm named Alcan (currently Rio Tinto) in 2000.
In spite of its introduction in the 1960s, it was only until the mid-1980s that the mainstream architectural industry discovered the properties of ACP as a building material and started its extensive use. Moreover, the widespread use of ACP in the commercial and residential buildings began in the early 1990s. It was then realised that it could reduce costs and enhance architectural performance.
ACP Brands through time
The first form of ACP that came to existence was marketed under the brand name ‘Alucobond®,’. The manufacturing process was patented by Alusingen for 20 years, between 1971 and 1991. The brand name (Aluminium –Composite — Bonding) was itself a representation of how the panel was made; by bonding the aluminium alloy to a composite material. It is for the same reason that the original aluminium composite panels were also known as Alucobond.
After the patent expired, many prominent names of the construction industry began the ACP manufacturing process. As a result, several significant brands emerged, like Alcoa (brand name Reynobond), Mitsubishi (brand name Alpolic), Etem (brand name Etalbond), etc.
Change in Composition of Aluminium Composite Panel
Even though many ACP brands emerged, the product did not change in essence. The significant changes occurred in the composition of the aluminium panels, which was modified based on the required features of the panel and their area of use.
However, when some high-rise buildings got burnt due to the involvement of ACP, the flammable nature of its core material came to fore. Since then, the core material has been altered to constitute non-flammable material with a low combustion risk.
The overall thickness of the panels used currently is in the range of 3-6 mm (0.12-0.24 in.), and that of the aluminium facings is in the range of 0.2- 0.8 mm (0.008- 0.032 in.) The insulated core has been developed from several different materials, but there are three general categories today in which every kind of core belongs:
PE Cores – These cores are made of 100% polyethylene (PE) and are flammable.
FR Cores – These cores are made of a composite material containing a high percentage (70% to 90%) of mineral wool/ rock fiber/ rock wool, which are non-combustible and act as a fire retardant.
Aluminium Cores – These cores are either made of an aluminium honeycomb structure or solid aluminium.
To make them more suitable for various kinds of applications, ACPs have been developed with different types of paints and coatings, as shown below:
PE/FR Constructional/Architectural Panel sheets coated with PVDF resin, (XT/ High Durable) polyester paint.
Panel sheets coated with Nano PVDF
Digital Printing/ Signage Panel sheets coated with FEVE resin or high-quality polyester.
Since the modifications carried out with the core and panel quality, several ACP products have launched which show many architectural advantages over other building materials:
Higher strength to weight ratio
Material flexibility and adaptability
Superior insulation features
Evolution of Aluminium Composite Panel
From being used for signage in the beginning to being a major architectural material, ACP has come a long way. Today, it finds applications in various projects and spaces, including in:
Internal Partitions, Building Renovations, Curved Fascias, Container Constructions, Internal Wall Coverings, Architectural Claddings, Machine Coverings and many more.
Aluminium Composite Panels are one of the most used material that dominates the facade industry. Due to its light-weight features, it is the substance of choice for building temporary elements like trade show structures. Viva manufactures high-quality Aluminum composite panels as per the building requirements. These include Aluminum core, FP core and PE core sandwich material that gives maximum structural integrity and fire hazard protection.
The use of Aluminium Composite Panels has evolved to such a level that many famous architectural marvels are extensively constructed from it. Some of them are Spaceship Earth in Orlando (U.S); L’Oreal Paris building in France; Guggenheim Museum Bilbao; The Leipzig branch of German National Library; VanDusen Botanical Garden in Canada, etc.
From a material dominated by a single company, ACP has evolved not only in its composition and manufacturers but also in its applications, making it one of the most used materials in the construction and architectural industry. With their lighter weight and fire -retardant properties, aluminium composite panels have been used so extensively, that some modern cities are composed entirely of them, along with materials like glass and curtain wall.