In the late 1980s, doors and windows were made of aluminum-based alloy profiles. Although they solved some of the shortcomings of steel windows, the profiles themselves were made of metal and had fast heat and cold conduction. The overall difference between steel windows and aluminum alloy windows was K The values are all above 6.0w/(m2.K), which does not fundamentally solve the problems of sealing and insulation. Although it can be equipped with insulating glass, the K value of the entire window can only reach about 4.5w/(m2.K).
In the mid-to-late 1990s, broken bridge aluminum alloy insulated doors and windows appeared in the door and window market, which was a high-end door and window product in the door and window market at that time. The profile design adopts high-strength insulating synthetic materials in the middle, and the surface treatment adopts high-tech technologies such as powder spraying, fluorocarbon spraying and resin hot stamping. Can meet ever-changing color matching needs.
The outstanding advantages of broken bridge aluminum alloy insulated doors and windows are light weight, high strength, good water and air tightness, good fire resistance, large lighting surface, resistance to atmospheric corrosion, long service life, good decorative effect, and good environmental performance.
However, as people's quality of life improves, they pay more and more attention to health, environmental protection, and energy conservation. Insulated aluminum alloy windows and plastic steel windows cannot match the interior decoration, cannot satisfy the appreciation of modern people, and are not in line with the country's energy-saving climate.
