The dyed yarns can then stain the rubbed fabric by the effect of rubbing during weaving. The determination of rubbing fastness is performed to determine whether such staining occurs. The purpose of these tests is to see whether the dyed yarns in the form of hank do not discolour by the effect of friction.

At the end of the studies, the staining value on the fabric is made according to gray scale (TS 423-3 EN 20105-A03 Textile - Methods for determination of color fastness - Section A03: Use of gray scale for evaluation of color flow). If the obtained value is 4 or higher, the rubbing fastness of the fabric is considered good. Otherwise, the fabric is sent for washing again. The tests are carried out in two ways: wet and dry rubbing fastness. For evaluation, a light cabinet with D65 daylight is used.

Rubbing fastness assessment studies should be performed in condition environment. In authorized laboratories, conditioning chambers are rooms that carry 20 degree room temperature and 65 percentage relative humidity conditions.

Rubbing fastness is applied to the inner surface of woven fabrics and to outer surface of knitted fabrics.

In order to determine to what extent the fabrics contaminate other textile products by rubbing, rubbing fastness is determined in accordance with the following standard:

• TS EN ISO 105-X12 Textiles - Color fastness tests - Part X12: Determination of color fastness to rubbing

Rubbing fastness determination studies should be performed in accredited laboratories from national or international accreditation organizations in accordance with the standards of TS EN ISO / IEC 17025 General Conditions for the Competence of Testing and Calibration Laboratories. These laboratories have a strong technological infrastructure and trained and experienced staff and are able to provide the most accurate, reliable and precise results quickly.