Abstract: In order to analyze the influence of domestic tumble laundering on denim fabric, three common fabrics were selected as the research objects in this paper. The effects of different washing times on the air permeability, stiffness, color fastness to friction, tear strength and tensile properties of denim fabrics are discussed. It can provide guidance on washing care of denim garment for consumers. The results show that, washing has little effect on the physical properties of denim fabric on the whole, so consumers can wash normally. The effect on the appearance and comfort of the fabric is more obvious, which is mainly reflected in two aspects: easy fading and poor air permeability. The air permeability of 10 times of washing is worse than that of 20 times of washing. With the increase of washing times, the physical properties of the denim fabric with spandex added have a greater change, so it is suggested to wash less for this kind of apparel.

Key words: Denim fabrics, Domestic tumble laundering, Physical properties, Washing times