Abstract:

In order to study the relationship between the physical mechanical properties of fabrics and air-jet loom speed, the twist difference on both sides of the fabrics at different weaving loom speed（500r/min、600r/min、700r/min）is analyzed in this paper. Samples of the fabrics are selected by ravel weft yarns on the different part, and the twist distribution, the weft strength and elongation, the fabric strength and elongation, the fabric bending length, and the fabric dyeing properties of each weft yarn sections were tested separately under different speed. The experiment result shows that the weft yarn untwisting generate more problems and difference between both sides of the color is bigger when the speed is lower. On the contrary, the increasing of the weft speed will decrease the weft yarn freely flying time, the untwist degree of the weft yarn was decreased with the shorten of weft yarn insertion time, and the weft strength loss, the fabric breaking strength loss, the bending rigidity loss, the dyeing difference on both side of the fabrics was decreased as well, but raw yarn quality requirements were improved with the speed simultaneously. Therefore, proper appropriate speed is the key to improve the quality and output of production by air-jet weft insertion.

Key words: air-fet loom, loom speed, twist, hysical and mechanical property, difference