织造参数对经编PBT和PET交织织物弹性的影响

Effect of knitting parameter on the elasticity of polyethylene terephthalate / polybutylene terephthalate warp knitted fabrics

采用PBT和PET长丝交织获得弹性经编针织物,讨论织物组织、牵拉密度、送经量对经编交织面料定负荷伸长的影响,并测试经编交织织物的定负荷伸长值。实验结果表明：使用经绒平组织在E28机号上织造,牵拉密度宜控制在18~20线圈/cm。当牵拉密度从16线圈/cm增加到26线圈/cm时,横向定负荷拉伸长值逐渐减小。当前梳GB1的PET纱线送经量保持恒定时,纵向定负荷拉伸长度随着后梳GB2的PBT纱线送经量的增大而增大。当后梳GB2的PBT纱线送经量保持一致时,增加前梳GB1的PET纱线送经量会使得纵向定负荷拉伸长增大,横向定负荷拉伸长降低。实验揭示了织造参数对织物定负荷伸长影响的规律,对PET/PBT经编针织物的生产提供参考。

This study investigated the influence of fabric weave,drawing density and yarn feeding speed on elastic elongation and elastic elongation value of the elastic warp knitted fabric made of polyethylene terephthalate（ PET）and polybutylene terephthalate（ PBT） filament. The experimental result shows that： the drawing density of locknit knitted on E28 machine is 18 - 20 loops per centimeter. When drawing density increases to 26 loops / cm from16 loops / cm,transverse elastic elongation value decreases gradually. When yarn feeding speed of GB1 keeps constant,lengthways elastic elongation value increases with the increases in PBT yarn feeding speed of GB2. When yarn feeding speed of GB2 keeps constant,the increase in GB1 yarn feeding speed of GB1 will make lengthways elastic elongation value rise and make transverse elastic elongation value reduce. This experiment shows the influencer rules of knitting parameters on elastic elongation of fabrics under certain load,and provides a reference to the PET / PBT warp knitted fabric production.