In the pursuit of high quality of life, noise pollution has become a problem for people. Aluminum-plastic co-extruded doors and windows with good sound insulation and noise reduction performance, to create a quiet and comfortable indoor space for people. Liaoning MOHAN New Material Co., Ltd. empowers the sound insulation and noise reduction ability of aluminum-plastic co-extruded windows and doors from multiple dimensions by virtue of its profound accumulation in the field of aluminum-plastic co-extrusion. Here is a detailed analysis of the sound insulation and noise reduction technology of aluminum-plastic co-extruded doors and windows and its practical effects.

First, subtle structural design, to create a soundproof barrier

Multi-cavity design to block the propagation of sound waves

Aluminum-plastic co-extruded door and window profiles adopt multi-cavity structure, each cavity is like an independent defense line. When the sound wave encounters these cavities in the process of propagation, it needs to pass through the interface between the air and the profile continuously, and every time it passes through it will consume part of the acoustic energy. Multi-cavity profiles significantly lengthen the propagation path of sound waves, allowing them to be reflected and refracted in a continuous process of energy attenuation. Liaoning MOHAN part of the aluminum-plastic co-extruded window and door products use five-cavity profiles, which have been professionally tested, and compared with the traditional three-cavity profiles, their ability to block medium and high-frequency noise has been improved by 10% - 15%.

Bridge-breaking technology reduces the impact of resonance

Through the bridge-breaking design, PA66 nylon and other heat-insulating strips are used to separate the inner and outer aluminum profiles, which not only solves the heat conduction problem, but also plays an important role in sound insulation and noise reduction. This design effectively avoids resonance of internal and external aluminum profiles due to acoustic vibration, reduces the possibility of direct transmission of sound waves through aluminum profiles, and prevents noise from easily penetrating the doors and windows.

Second, high-quality materials, solid foundation for sound insulation

Plastic outer layer absorbs acoustic energy

The outer layer of aluminum-plastic co-extruded windows and doors is made of polyvinyl chloride (PVC) plastic, which has good sound-absorbing properties and can absorb part of the acoustic energy that hits the surface of the windows and doors and convert the acoustic energy into heat energy for dissipation. During the production process, LIAONING MUHAN will add special additives to further optimize the sound-absorbing properties of PVC and enhance its absorption of sound waves of different frequencies, so as to weaken the intensity of noise transmitted into the room from the source.

Double or multi-layer glass to enhance the sound insulation effect

Aluminum-plastic co-extruded windows and doors are often used with double or multi-layer glass. The air or inert gas layer formed between the glass acts as an additional noise barrier. When sound waves of different frequencies pass through the glass and the air layer, they will be reflected and refracted due to the difference in acoustic impedance, and a large amount of noise will be blocked outside after many times of reflection and refraction. Among them, after filling the insulating glass with argon gas, the sound insulation performance can be improved by 3 - 5 dB, creating a quieter environment for users.

Third, tight sealing, to prevent noise leakage

Sealing strip to block noise intrusion

When installing aluminum-plastic co-extruded doors and windows, use high-quality sealing tape for sealing. Sealant strip has good elasticity, can closely fit between the door and window frames and fans, doors and windows and the gap between the wall, effectively preventing noise transmission into the room through the gap. This sealing not only prevents air convection, but also blocks the channel of noise propagation, significantly reducing the noise generated by air vibration.

Precise Installation to Guarantee Soundproof Effect

MOHAN Liaoning has a professional installation team that strictly follows the installation standards to ensure that the gaps between the door and window frames and the walls are filled to the brim and the sealant is evenly applied. During the installation process, through precise measurement and adjustment, the door and window fans and frames are made to fit tightly and seamlessly, eliminating problems such as air leakage and water seepage, avoiding noise “seepage” from the installation process, and giving full play to the sound insulation and noise reduction performance of the doors and windows.

Fourth, the actual application of the effect is remarkable

Aluminum-plastic co-extruded doors and windows installed in the city's main road next to the residence, indoor noise can be reduced by 30 - 40 decibels. The original noisy street noise is greatly weakened, creating a quiet rest and living space for residents. In schools, hospitals and other places with high requirements for noise control, aluminum co-extruded doors and windows can also effectively block outside noise interference, providing a good teaching environment for teachers and students, and creating a quiet rehabilitation space for patients.

In summary, aluminum-plastic co-extruded doors and windows through the scientific structural design, high-quality material selection, tight sealing technology and professional installation services, multi-faceted synergies to achieve ideal sound insulation and noise reduction effect. Liaoning MOHAN New Material Co., Ltd. will continue to innovate and provide customers with better aluminum-plastic co-extruded windows and doors to help people create a quiet and comfortable living space.