Effect of Nonwoven Backings on the Noise Absorption Capacity of Tufted Carpets

Abstract

Using an impedance tube interferometer as a measuring device, we found that between 250 to 1000Hz, the noise absorption coefficients of tufted carpets backed by several layers of stitch-bonded nonwovens were significantly higher than those of un backed carpets. The increase in the noise absorption capacity of the backed carpets depended primarily on the thickness of the backing, the effect of fiber content being only marginal.