In the field of building doors and windows, aluminum-plastic co-extruded profiles are widely used due to their excellent comprehensive performance. As one of the leading aluminum co-extruded passive windows, it shows significant advantages in many aspects compared with ordinary aluminum co-extruded windows. Liaoning Muhan New Material Co., Ltd. has been deeply engaged in the research and development of aluminum co-extruded products for a long time, and the following will be an in-depth analysis of the unique advantages of aluminum co-extruded passive windows from a number of dimensions.

First, energy-saving performance is greatly improved

(A) excellent thermal insulation design

Aluminum-plastic co-extruded passive window adopts multi-cavity structure design, and the number of cavities is often more than ordinary aluminum-plastic co-extruded windows. More cavities form a more complex air insulation layer, which greatly extends the heat conduction path and effectively reduces the heat conduction efficiency. At the same time, it is usually paired with high-performance insulating glass, such as double or triple insulating glass, part of which will also be filled with inert gases such as argon to further enhance the thermal insulation effect. According to professional tests, the heat transfer coefficient of aluminum-plastic co-extruded passive windows can be as low as 0.8 - 1.5W/(㎡・K), while the heat transfer coefficient of ordinary aluminum-plastic co-extruded windows is generally 2.0 - 3.5W/(㎡・K). This means that in the same climate conditions, the use of aluminum-plastic co-extruded passive windows in the building, the amount of heat loss or gain is greatly reduced, significantly reducing the heating and cooling energy consumption.

(ii) Highly efficient airtightness

Aluminum-plastic co-extruded passive windows require extremely high airtightness, and air leakage is effectively prevented through the use of high-quality sealing rubber strips, advanced sealing technology and precise installation technology. In contrast, ordinary aluminum co-extruded windows have a certain gap in airtight performance. Good airtight performance makes the passive window can effectively avoid the exchange of heat caused by air convection, so that the indoor temperature is more stable, thus reducing the frequency of air conditioning, heating and other equipment, to achieve significant energy-saving effect.

Sealing performance upgraded

(A) High-quality sealing materials

Aluminum-plastic co-extruded passive windows use high-quality sealing materials between the window frame and the window sash, and between the window frame and the wall. For example, the aluminum-plastic co-extruded passive windows produced by Liaoning Muhan use EPDM sealing tape. This type of adhesive tape has excellent weather resistance, aging resistance and elasticity, and can maintain good sealing performance in various harsh environments, effectively preventing the intrusion of rain, dust and air. The ordinary aluminum-plastic co-extruded windows may use relatively low quality sealing tape, which is prone to aging, hardening, cracking and other problems after long-term use, resulting in a decline in sealing performance.

(ii) Fine splicing and installation process

Passive window in the window frame and window splicing process is more delicate, using precision welding or riveting technology to ensure that the splicing is smooth and smooth, no gaps. At the same time, in the connection part of the window frame and the wall, the sealing treatment is carried out in strict accordance with the standard, and high-quality sealant is used to ensure the integrity of the seal. In contrast, ordinary aluminum-plastic co-extruded windows in the splicing and installation process, may not be fine enough due to the process, resulting in poor sealing effect.

Third, sound insulation and noise reduction effect is remarkable

(A) optimized structural design

The multi-cavity structure and high-performance glass of aluminum-plastic co-extruded passive window not only enhance the thermal insulation performance, but also play a positive role in sound insulation and noise reduction. The multi-cavity structure can effectively block the propagation of sound waves and reduce the penetration of sound waves; while the double or triple insulating glass and the filled inert gas further enhance the ability to block sound waves of different frequencies. According to the test, the sound insulation of aluminum-plastic co-extruded passive window can be up to 40 - 50dB, which can effectively isolate traffic noise, construction noise and other external interference, creating a quiet and comfortable indoor environment. Ordinary aluminum-plastic co-extruded window sound insulation amount is generally 25 - 35dB, sound insulation effect is relatively weak.

(ii) Good airtight performance assistance

As mentioned above, the excellent airtightness of aluminum-plastic co-extruded passive windows effectively prevents air leakage and reduces the noise generated by air vibration into the room. To a certain extent, this further enhances its sound insulation and noise reduction effect.

IV. Longer service life

(A) High-quality material selection

Aluminum-plastic co-extruded passive window selected aluminum alloy, plastic and other accessories have higher quality standards. The aluminum alloy skeleton has higher strength and stronger corrosion resistance; the plastic outer layer has better anti-aging properties. At the same time, the passive window in the production process, the quality of the material more stringent control to ensure product stability and reliability. In contrast, ordinary aluminum-plastic co-extruded windows may have certain differences in material selection, resulting in a relatively short service life.

(ii) Advanced production technology

Passive windows use advanced production processes to strictly control the quality of production in the extrusion of profiles, door and window assembly and other aspects. For example, the quality and performance of profiles are ensured through precise control of temperature, pressure and other parameters; in the process of door and window assembly, automated equipment is used to improve assembly precision and reduce human error. All these measures help to extend the service life of aluminum-plastic co-extruded passive windows.

In summary, compared with ordinary aluminum-plastic co-extruded passive windows, aluminum-plastic co-extruded passive windows have significant advantages in terms of energy-saving performance, sealing performance, sound insulation and noise reduction effect as well as service life. Liaoning MOHAN New Material Co., Ltd. will continue to increase R & D investment, and constantly improve the performance of aluminum-plastic co-extruded passive windows, to create better quality, more energy-saving, more comfortable building door and window products for customers.