The Role and Principle of The PET Acoustic Panel

PET Acoustic Panel, also known as glass wool, is a material made from polyester fibers by hot pressing and forming with sound absorption. It is generally used in engineering noise reduction: automotive engines, and engineering motor seals to mitigate noise. High-frequency high decibel noise has a very good mitigation effect. Next, let's take a look at what PET Acoustic Panel does and how it works.

Here is the content list:

• What does the PET Acoustic Panel do?

• What is the principle of sound absorption in the PET Acoustic Panel?

What does the PET Acoustic Panel do?

The PET Acoustic Panel is an acoustically absorbent material and structure with several small voids on the surface. The material itself is made of wood, so that the sound waves generated in the room reflect part of the energy and absorb part of it, minimizing the noise received by the receiver. The use of PET Acoustic Panels in the vicinity of the sound source effectively reduces the sound energy transmitted by the noise in the room, thus achieving an absorption effect. Whether it is a strong industrial noise environment or a domestic noise indoors, if PET Acoustic Panel is installed on the wall around the sound source, a noise reduction effect of 15-20db can be achieved. At the same time, the closer the PET Acoustic Panel is to the sound source, the better the noise reduction effect, and the better the sound insulation effect on high-frequency noise than on low-frequency noise.

In addition, the PET Acoustic Panel has a good sound absorption effect and is also fire, moisture, and mold resistant, which is why more and more public places are choosing this sound absorption material. The PET Acoustic Panel is also quick and easy to install, saving time and manpower. The size of the panels is also sensitive and can be tailored to the customer's needs, and the panels are available in a wide range of textures and colors to enhance the aesthetics.

What is the principle of sound absorption in the PET Acoustic Panel?

The PET Acoustic Panel is a decorative material made from polyester fibers, which are thermo-compression molded to provide sound absorption. Polyester fibers are porous sound absorbing materials and their sound absorption characteristics increase gradually with increasing frequency, which means that low-frequency absorption is not as good as high-frequency absorption. The necessary condition for sound absorption in porous materials is that the material has a large number of voids, which are numerous and continuous together to form a channel. 

One of the misconceptions is that materials with rough surfaces have sound absorption properties, but they do not, e.g. brushed cement and stones with convex and concave surfaces are non-absorbent. The second misconception is that materials with a large number of internal pores, such as polyphenylene, polyethylene, and closed-cell polyurethane, have good sound absorption properties. These materials have a small absorption coefficient because the internal pores are not connected and sound waves cannot vibrate and rub deep inside the material. 

In contrast, the sound absorption mechanism of the PET Acoustic Panel and the cavity structure is resonant sound absorption by a thin panel. At the resonance frequency, the thin plate absorbs a large amount of sound energy due to its violent vibration. It has a good sound absorption performance for both high and low frequencies. All in all, PET Acoustic Panel has a good sound absorption effect, is environmentally friendly and healthy, and is a good choice for everyone.

For more information about PET Acoustic Panel, please contact us. With years of accumulated experience in R&D and production, we can provide you with more product services and technical support! Our official website is https://www.yhacoustic.com/.