Door and window industry needs to "stabilize" the advantages and disadvantages of aluminum-wood composite products
China's door and window market has seen significant growth over the past decade, with a wide variety of products now available. Among them, composite doors and windows have become increasingly popular, including aluminum doors and windows, wooden-aluminum composites, and various other combinations. The term "wood composite doors and windows" has become the most common in the market. Other terms like "aluminum-wrapped wood," "wood-laminated aluminum," and "aluminum-wood composite" all refer to products that combine wood and aluminum. While they may look similar at first glance, their internal structures and performance characteristics differ significantly.
The concept of aluminum-wood composite doors and windows was introduced from Europe earlier on, and since then, many similar products such as "aluminum-wrapped wood" and "wood-clad aluminum" have appeared in the domestic market. These products are widely used in Europe due to their mature technology and well-established standards. A notable example is the Hannsock door and window system from Germany, which brought the idea of aluminum-wood composites to China, shaping the industry’s development.
Aluminum-wood composite doors and windows evolved from traditional wooden windows. They still use solid wood as the main structure, but add an aluminum alloy profile on the exterior side. This combination not only protects the wood but also enhances the structural strength, achieving performance levels that pure solid wood cannot reach. In Germany, the minimum standard for aluminum-wood composite doors and windows is IV68+. With the introduction of new energy-saving regulations, the standards have been upgraded to IV78+ and IV88+.
The term "aluminum-clad wood" comes from the concept of aluminum-wood composites. It is a name commonly used by Chinese manufacturers for this type of product. Though visually similar, there are differences in the standard systems, product structures, and even the entire process of deep wood processing. Currently, there is no unified national standard for aluminum-clad wood doors and windows, leading to various versions like the 56 series and 58 series. Most of these products use IV68+ as a reference, aiming to reduce wood thickness and save material costs. As a result, performance and structural strength are often compromised.
"Wood-laminated aluminum" doors and windows represent another variation of aluminum composite products. Unlike aluminum-wood composites, they are based on aluminum alloy windows, with wooden panels added on the interior side. Visually, they resemble "aluminum-wrapped wood," but from a system perspective, they are derived from aluminum windows rather than wooden ones. Therefore, there is no direct connection between "wood-laminated aluminum" and "aluminum-clad wood." In this case, the "wood" serves mainly as a decorative element and lacks structural strength, while adding weight to the aluminum frame. If the wood is not properly processed, its inherent flaws may still be present.
Due to the low technical barriers and minimal complexity involved in manufacturing wood-laminated aluminum doors and windows, many aluminum companies have entered this market. Some even mimic the appearance of "aluminum-wrapped wood" to attract consumers, sometimes misleading them. This creates confusion among buyers, making it difficult for them to make informed decisions. For some manufacturers, this has become a new way to boost profits.
Experts suggest that the current chaotic market conditions create challenges for both consumers and industry players. To address this, accelerating the establishment of clear and standardized industry guidelines is essential. Setting proper standards will help regulate the market, protect consumers, and ensure long-term healthy development of the industry.
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