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With the development of technology and the improvement of living standards, as well as the call of the country to establish an energy-saving and harmonious society, doors and windows, as the eyes and energy loss of buildings, account for 40% of the total energy loss of buildings, which has attracted sufficient attention from the country. Especially in 2004, Beijing, the capital city, made the heat transfer coefficient (insulation and energy-saving index) of doors and windows a mandatory acceptance index, which has also attracted great attention and implementation in various provinces and cities throughout the country Energy saving doors and windows have become the mainstream of building doors and windows.

Energy saving doors and windows are generally composed of several modules, including profiles, hardware, glass, EPDM sealing strips, and processing technology. Sealing strips have been overlooked by many door and window manufacturers due to their low cost and the influence of some traditional concepts that do not attach importance to energy-saving standards. However, sealing strips play a crucial role in door and window systems. What role does EPDM sealing strips play in door and window systems? {HotTag}

Sealing strips are installed on door and window frames, fans, and glass, relying on the excellent elastic performance of EPDM to tightly connect the profiles, hardware components, and glass of doors and windows, forming a whole. Based on the basic principle of equal pressure design for energy-saving doors and windows, they play a sealing equal pressure role, thereby achieving the three property standards and energy-saving standards of doors and windows. They play a crucial role in improving the airtightness, water tightness, and sound insulation performance of doors and windows, Make doors and windows truly qualified energy-saving doors and windows.

In addition, there are many manufacturers in the current door and window industry who still do not emphasize the technical connection and integrity of the door and window system. The door and window profiles and accessories used are pieced together, causing materials and accessories that are not very compatible to be combined together, resulting in many problems and defects after the door and window are made, or problems that occur due to uncontrolled processing technology. Finally, sealing strips are used to compensate for the defects of the window, in order to improve the overall performance of the door and window, Meeting the standards for energy-saving doors and windows, and solving such problems requires the high or low product design and technical production capabilities of sealing strip manufacturers.

Below are some opinions on sealing strips from the material, design, and dimensional tolerances of EPDM:

The importance of the first material

Nowadays, most energy-saving doors and windows are made of EPDM rubber material. EPDM is a copolymer of ethylene, propylene, and a small amount of third monomers. The international name for EPDM is EPDM. EPDM rubber has excellent resistance to sunlight and ultraviolet rays, weather resistance (service life is synchronous with doors and windows), heat aging, high and low temperature resistance, ozone resistance, chemical medium resistance, water resistance, good electrical and elastic properties, and other physical and mechanical properties. Also known as crack free rubber, it is recognized worldwide as the best material for producing sealing products. The main physical properties and technical parameters are as follows:

The above data is in accordance with the requirements of the national standard GB12006-89 and the overall requirements for door and window systems, referring to DIN 53505 and DIN 53504 in Germany.... According to the data considered in the DIN5316 standard, the EPDM of this physical property state can better meet the standards of the three properties and energy efficiency of door and window systems.