As the most influential trade platform for yarn and fiber industry players in Asia,Yarn Expo Autumn is renowned for its comprehensive range of exhibitors.As such,the show keeps gaining in popularity,with the number of...As the most influential trade platform for yarn and fiber industry players in Asia,Yarn Expo Autumn is renowned for its comprehensive range of exhibitors.As such,the show keeps gaining in popularity,with the number of exhibitors increasing from 258 to morethan 270 this year.To date,they come from 12 countries展开更多
A study is reported for mathematical model and simulation of complex structure fancy yarns. The investigated complex structure fancy yarns have a multithread structure composed of three components - core, effect, and ...A study is reported for mathematical model and simulation of complex structure fancy yarns. The investigated complex structure fancy yarns have a multithread structure composed of three components - core, effect, and binder yarns. In current research the precondition was accepted that the cross-sections of the both two yarns of the effect intermediate product in the complex structure fancy yarn remain the circles shaped, and this shape does not change during manufacturing of the fancy yarn. Mathematical model of complex structure fancy yarn is established based on parameter equation of space helix line and computer simulation is further carried out using the computational mathematical tool Matlab 6. 5. Theoretical structure of fancy yarn is compared with an experimental sample. The simulation system would help for further the set of information in designing of new assortment of the complex structure fancy yarns and prediction of visual effects of fancy yarns in end-use fabrics.展开更多
The technique of sirospun process is applied on a modified semi-worsted balloonless spinningframe to investigate the effect of spindle-speed,yarn-twist and strand-spacing on yarn properties.Yarn breaking strength,brea...The technique of sirospun process is applied on a modified semi-worsted balloonless spinningframe to investigate the effect of spindle-speed,yarn-twist and strand-spacing on yarn properties.Yarn breaking strength,breaking extension,evenness and imperfection are examined on the basisof CCD experimental design.Yarn hairiness is particularly concerned,being found that all spinningparameters tested have significant effects on hairiness and that the minimum number of hairs oc-curs at the strand-spacing of 14.4 mm.Compared to conventional single spun yarn,experimentshave revealed the greatest advantage of using sirospun process is that all sirospun yarns have muchless hairiness.A new sirospun yarn fault,so called“loop”,has also been examined.The most likely cause forthis yarn fault is the strand-tension unbalance between the two strands when low tension spinningis applied.Further analysis and some initial tests have been carried out in the hope of overcomingthis loop fault which is an important obstacle to the application of balloonless spinning.展开更多
文摘As the most influential trade platform for yarn and fiber industry players in Asia,Yarn Expo Autumn is renowned for its comprehensive range of exhibitors.As such,the show keeps gaining in popularity,with the number of exhibitors increasing from 258 to morethan 270 this year.To date,they come from 12 countries
文摘A study is reported for mathematical model and simulation of complex structure fancy yarns. The investigated complex structure fancy yarns have a multithread structure composed of three components - core, effect, and binder yarns. In current research the precondition was accepted that the cross-sections of the both two yarns of the effect intermediate product in the complex structure fancy yarn remain the circles shaped, and this shape does not change during manufacturing of the fancy yarn. Mathematical model of complex structure fancy yarn is established based on parameter equation of space helix line and computer simulation is further carried out using the computational mathematical tool Matlab 6. 5. Theoretical structure of fancy yarn is compared with an experimental sample. The simulation system would help for further the set of information in designing of new assortment of the complex structure fancy yarns and prediction of visual effects of fancy yarns in end-use fabrics.
文摘The technique of sirospun process is applied on a modified semi-worsted balloonless spinningframe to investigate the effect of spindle-speed,yarn-twist and strand-spacing on yarn properties.Yarn breaking strength,breaking extension,evenness and imperfection are examined on the basisof CCD experimental design.Yarn hairiness is particularly concerned,being found that all spinningparameters tested have significant effects on hairiness and that the minimum number of hairs oc-curs at the strand-spacing of 14.4 mm.Compared to conventional single spun yarn,experimentshave revealed the greatest advantage of using sirospun process is that all sirospun yarns have muchless hairiness.A new sirospun yarn fault,so called“loop”,has also been examined.The most likely cause forthis yarn fault is the strand-tension unbalance between the two strands when low tension spinningis applied.Further analysis and some initial tests have been carried out in the hope of overcomingthis loop fault which is an important obstacle to the application of balloonless spinning.
