Types of perforated acoustic panels

Everyone knows that sound-absorbing board is one of the good materials for decoration and sound insulation. Perforated sound-absorbing board is one of them. Its unique perforated design makes its sound-absorbing performance very good. Perforated sound-absorbing board types are wood perforated sound-absorbing board, aluminum honeycomb perforated board, gypsum perforated sound-absorbing board, etc. The following small series for you to introduce in detail!

Wooden perforated sound-absorbing board is a kind of structural sound-absorbing material with round holes on the front and back. Because there are many tiny connected pores inside the material, sound waves can penetrate into the material along these pores, and the sound energy is converted into heat energy through friction with the material.

Gypsum perforated sound-absorbing board refers to the cylindrical holes that run through the front and back of the gypsum board, and the sound-absorbing material that can absorb sound energy is pasted on the back of the board. The sound absorption mechanism is that there are a large number of tiny connected holes in the material. The sound waves along these holes can penetrate into the material, generate friction with the material, and convert sound energy into heat energy. The sound absorption performance of porous sound-absorbing materials increases with the increase of frequency, and the sound absorption coefficient increases gradually.

　　Aluminum honeycomb perforated acoustic panelThe internal structure of the perforated panel and perforated backplane is an aluminum honeycomb sandwich structure directly bonded by high-quality adhesive and aluminum honeycomb core. A layer of sound-absorbing cloth is pasted between the honeycomb core and the panel, the honeycomb core and the backplane. This will hinder the flow of air (air propagation), so that the sound wave of the sound is hindered, and the sound absorption coefficient is increased.

The perforated sound-absorbing honeycomb aluminum plate adopts a honeycomb sandwich structure, that is, the surface is coated with a decorative coating with excellent weather resistance, and the perforated aluminum plate and the aluminum honeycomb core are compounded by high temperature and high pressure. The structural structure of punched sound-absorbing honeycomb aluminum plate is perforated panel and perforated back plate, which are directly bonded to aluminum honeycomb core by high-quality adhesive into aluminum honeycomb sandwich structure, and a layer of sound-absorbing non-woven fabric is pasted on the back plate of aluminum honeycomb plate.

Because the honeycomb core in the honeycomb aluminum plate is divided into a plurality of closed small rooms, the airflow is blocked, the sound wave is blocked, the sound absorption coefficient is improved (up to 0.9 or more), and the strength of the plate itself is also improved, so that the size of a single plate is larger, and the design freedom is further increased. According to the indoor sound quality design, different perforation design can be carried out, and the sound absorption coefficient of the combined structure can be controlled within a certain range, which can not only achieve the design effect, but also reasonably control the cost.

According to the acoustic principle, the designers of perforated sound-absorbing panels have different perforation methods, some are directly perforated, and some are combined into a honeycomb sandwich structure by a panel and a backplane, and their effects have their own advantages. Fabric is non-woven.