Bending resistance of air-textured yarns

The exceptionally high bending rigidity of air-textured yarn has hindered its use and development in such fields as household textiles and garments.The cantilever method was used to measure the bending rigidity of the classic yarn,air-textured yarn,and differential shrinking air-textured yarn.The experiment results indicated that the bending rigidity of the air-textured yarn was more than 2 times of that of the control ring spun wool yarn and cotton yarn.The high bending rigidity of the air-textured yarn is attributed to the entanglement structure which is formed from disordering the fiber alignment during processing the yarn.Therefore,through optimizing the process parameters of air-textured yarn,the bending resistance of the yarn can be improved with a small margin without excessive extension of the process,while the multi-texturing can greatly lower the bending rigidity of the yarn by adjusting the entanglement degree.The experiment has proved that when the differential shrinkage is above 10%,the bending rigidity of the air-textured yarn can be reduced remarkablely.