Hot-break curtain wall

The heat break curtain wall has become the mainstream of the current curtain wall system, and the heat break method of the curtain wall is basically the way of the heat break strip, the common materials are mainly Tylenol wind heat break strip, PA66 nylon insulation strip, bridge PVC. The heat break strip connects the interior and exterior curtain wall components to form a keel supporting structure of the curtain wall. Among them, in addition to the heat break function, the main function of the heat break strip is to connect the aluminum alloy components of the curtain wall, so it needs to have the strength and stiffness similar to that of the aluminum alloy.

In the application of engineering project, the curtain wall facade has become the key material widely used, but because the cost of the heat break bar has a great impact on the cost of the heat break profile, it also causes the increase of the curtain wall cost. Due to the requirements of heat break, the connection between the building structure and the column of the curtain wall system can only be limited to indoor, that is to say, the column supporting the curtain wall system can only be on the indoor side of the heat break strip, while the material on the outdoor side of the heat break strip can only play its decorative role because it can not be directly connected with the building structure. Especially in the case that the curtain wall adopts the large vertical decorative belt, the amount of aluminum profile of the outdoor decorative belt accounts for more than 30% of the total amount of the aluminum curtain wall system, but it only plays the role of decoration or shading, and it is still necessary to set up another structural system to support the curtain wall system indoors, and the strength utilization rate of the material is extremely low.

Therefore, the ideal goal is to improve the strength utilization rate of the material by changing the way the curtain wall is constructed, and at the same time to ensure or improve the insulation and other functions of the curtain wall panel. In addition, if the curtain wall system can cancel the heat break strip without affecting the insulation effect, the material cost can be reduced. The processing technology of aluminum profile can be divided into “strip” and “pouring” two kinds. Its production process is different, the mechanical quality of the material is also different. Because processing is a necessary process, so in the process of processing quality problems are inevitable.