For the textile industry the touch of a fabric has become a very important selling argument; this is why several processes in textile finishing meant to improve fabric touch are performed: sanding and raising, for example. It is now necessary tocharacterise these processes objectively, at present the control is very empirical. This study describes two methods for investigating sanding and raising and brings into light the effects of these processes on the fabric surface. Two differentmulti-directional roughness meters have been developed: a mechanical and an optical one A textile fabric is rubbed with a probe or lighted with a beam and the signal obtained with each method is studied in the frequency domain. The power spectrum density, resulting to Fourier transform, shows several peaks of frequency which correspond to the kind of weave or knit and of the fabric density. The peak height varies and decreases after sanding and raising, due to a modified surface profile. The mechanical oroptical multi-directional roughness meters provide information about the state of surface fabric and the basic directions of fabric relief
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