Sound Absorption Classification
Heavyweight paperboard products or composite webs provide sound-reducing properties in architectural or industrial linings. An acoustic damping roll consists of layers designed to dissipate vibrational energy into heat through friction between fibres. Manufacturers specify these materials by their mass per unit area and flow resistance.
The effectiveness of the roll depends on the density of the substrate and any specialized coatings applied during the finishing process.
Conversion Method
Rotary slitting and winding equipment processes the wide master rolls into narrower formats for construction application. The acoustic damping roll requires tension control that prevents crushing the porous structure of the medium. If the winding pressure exceeds the compressive strength of the fibres, the air voids collapse and reduce the decibel drop.
Specialized unwinders maintain a constant pull to preserve the loft of the material. Mechanical properties such as tensile strength ensure the web survives the coating line where viscoelastic polymers are often added to enhance the deadening effect.
Performance Tolerance
Testing protocols evaluate the ability of the material to lower noise transmission across a range of frequencies. While a standard acoustic damping roll handles mid-range vibrations well, low-frequency sounds usually require higher bulk or secondary backing. Total attenuation varies by mounting style and the air gap left behind the panel.
