A revolutionary sound-absorption solution

The sound-absorbing function of acoustic nonwoven is primarily generated by the vibration of air within the micro-pores of the fibres, which is triggered as sound waves pass through the material. This requires the material to be permeable to sound waves and to contain a large number of micro-pores, whilst also possessing a certain degree of airflow resistance to create the conditions necessary for air vibration. Materials that are both lightweight and breathable are difficult to manufacture, resulting in low efficiency and high costs. From a manufacturing perspective, dense materials are easier to produce and less costly; however, they also result in excessively high airflow resistance, preventing sound waves from penetrating or allowing only minimal penetration. Consequently, the sound-absorption performance is inevitably significantly reduced or virtually non-existent.

Acoustic nonwoven is generally applied to the back of perforated panels; it can be fixed in place using glue, or you can use acoustic paper products that come with their own hot-melt adhesive and apply them to the back of the perforated panels by heating them.

Common perforated ceiling panels primarily utilise a single aperture to form a Helmholtz resonator, whilst the numerous apertures in the perforated panel create a Helmholtz resonance system to achieve sound absorption; however, the system formed by the perforations is selective with regard to sound wave frequencies. Applying sound-absorbing nonwoven to the reverse side increases acoustic resistance, broadens the sound absorption frequency band, and significantly enhances noise reduction performance.

Sound-absorbing nonwoven is generally used in public buildings with high footfall or where there are stringent requirements regarding the acoustic environment, such as airports, office blocks, underground stations, hospitals, conference centres, laboratories and enclosed sports venues.