Centexbel determines the thermal insulation (expressed in Rct) and water vapour permeability (Ret), as well as the moisture management of fabrics and garments.
The usefulness of a zipper in service can be evaluated by these tests. No one test determines the suitability of a zipper for a specific end use. Since the tests are inter-related more than one may be needed for a complete evaluation.
Snagging occurs when loops of yarn or fibers are pulled to the surface of woven or knitted fabrics after contact with a sharp or rough object. This can happen during use when textiles come into contact with such objects, damaging the fabric.
