Innovative Applications and Advantage Analysis of AL+PET Composite Aluminum Foil in the Ventilation Ducts Field

In ventilation and air conditioning systems, ventilation ducts, as key components for air transportation, their performance has an important impact on the energy efficiency of the system and air quality. AL+PET composite aluminum foil, with its excellent physical and chemical properties, has demonstrated strong competitiveness in the manufacturing and application of ventilation ducts, bringing innovation to the ventilation and air conditioning industry.

The application of AL+PET composite aluminum foil in ventilation ducts is first reflected in its outstanding thermal insulation performance. The combination of the low thermal conductivity of aluminum foil and the heat insulation properties of PET film makes the thermal conductivity of the composite aluminum foil as low as 0.03W/(m·K), effectively reducing the heat loss of the ducts during air transportation. In the ventilation and air conditioning systems of large commercial buildings and industrial plants, ventilation ducts insulated with AL+PET composite aluminum foil can reduce the energy consumption of the air conditioning system by 15% - 20%, significantly improving energy utilization efficiency. At the same time, this material has good moisture-proof performance, which can prevent surface condensation of the ducts, avoid mold growth and metal corrosion caused by moisture, and ensure indoor air quality. For example, in a large shopping mall in a humid coastal city, after replacing the traditional duct materials with AL+PET composite aluminum foil ducts, the mold detection rate in the air dropped from 12% to less than 1% within half a year, and the number of customer complaints about air quality decreased by 80%.

In terms of mechanical properties, AL+PET composite aluminum foil has high strength and flexibility. Its tensile strength can reach more than 150MPa. During the installation and use of ventilation ducts, it can withstand certain external extrusion and collision and is not easily deformed or damaged. The flexibility allows the composite aluminum foil to adapt to the processing requirements of ventilation ducts of different shapes and sizes. Through processes such as rolling and bending, it can be made into various forms of ventilation ducts, such as circular and rectangular, to meet the ventilation requirements of complex building structures. In a high-rise office building with a complex duct layout, AL+PET composite aluminum foil ducts were successfully bent into multiple angles to bypass building beams and columns, reducing the need for additional connecting parts by 30% compared to traditional metal ducts. In addition, the surface of AL+PET composite aluminum foil is smooth, with low air resistance, which can reduce the noise of air flowing in the ducts and improve the operation comfort of the ventilation system. Tests show that in the same air volume, the noise generated by AL+PET composite aluminum foil ducts is 5-8 decibels lower than that of galvanized steel ducts.

Another notable advantage of AL+PET composite aluminum foil in ventilation ducts is its lightweight property. Compared with traditional galvanized steel ducts, the weight of AL+PET composite aluminum foil ducts of the same specification is reduced by about 60%. This not only reduces the load on the building structure but also simplifies the installation process. In the installation of a hotel's ventilation system, the use of AL+PET composite aluminum foil ducts reduced the number of installation workers by 20% and shortened the installation time by 30% compared to the original plan using steel ducts. Moreover, the lightweight feature also reduces transportation costs. For long-distance transportation, the transportation cost per unit length of AL+PET composite aluminum foil ducts is about 40% lower than that of steel ducts.

From the perspective of corrosion resistance, AL+PET composite aluminum foil performs exceptionally well. In environments with high humidity or containing corrosive gases, such as chemical plants and swimming pools, traditional metal ducts are prone to corrosion, which affects their service life and air quality. However, AL+PET composite aluminum foil has good chemical stability and can resist the erosion of common corrosive gases and liquids. A chemical plant that used AL+PET composite aluminum foil ducts in its ventilation system found that after 5 years of use, the ducts showed no signs of corrosion, while the previous galvanized steel ducts needed to be replaced every 2-3 years, greatly reducing maintenance costs.

In terms of environmental protection, AL+PET composite aluminum foil is also in line with the development trend of green buildings. It is recyclable, and the recycling rate can reach more than 90%, which reduces the generation of construction waste. In the production process, the energy consumption and pollutant emissions of AL+PET composite aluminum foil are lower than those of traditional metal materials. According to relevant data, the carbon emissions during the production of AL+PET composite aluminum foil are about 30% lower than that of galvanized steel. This helps reduce the carbon footprint of the construction industry and promotes the development of low-carbon buildings.

From the perspective of industry development trends, with the continuous improvement of building energy conservation standards and the popularization of the concept of green buildings, the demand for high-efficiency and energy-saving duct materials is increasing. AL+PET composite aluminum foil, with its advantages of energy conservation, environmental protection, and durability, has broad market application prospects. In the future, the industry will further explore its composite application with new thermal insulation materials, such as aerogel, to develop duct products with better performance. For example, the combination of AL+PET composite aluminum foil and aerogel can reduce the thermal conductivity to below 0.02W/(m·K), further improving the thermal insulation effect. At the same time, research and development of flame-retardant AL+PET composite aluminum foil will also be strengthened to meet the higher fire safety requirements of buildings. It is expected that in the next 5-10 years, the market share of AL+PET composite aluminum foil in the ventilation duct material market will increase by 20-30%, promoting the development of the ventilation and air conditioning industry towards the direction of low-carbon and high-efficiency.