Abstrakt:

The investigation of the stress relaxation process of a three-ply breathable-coated fabric, consisting of an outer polyester woven fabric, an insider polytetrafluoroethylene micropore film and a liner polyester knitted fabric, is presented. The tensile properties of these materials are also analysed. The stress relaxation curves of a breathable-coated fabric and an outer polyester woven fabric are determined in three directions, in warp, in weft and on the cross at a 45° angle, and the character of the relaxation process is also analysed. The break points of the stress relaxation process of the materials investigated are also determined. The comparison of the stress relaxation process of a breathable-coated fabric and breathable-coated leather is presented. The break point in the relaxation process is observable even in the system in which this is observable in at least one layer of the system.