Yarn

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Zhuan Yong Zou - One of the best experts on this subject based on the ideXlab platform.

  • Effect of Some Variables on the Fibre Packing Pattern in a Yarn Cross-section for Vortex Spun Yarn
    2016
    Co-Authors: Zhuan Yong Zou, Long Di Cheng, Shaoming Zheng, Jiangwei Yao, Jinjiang Laboratory, P. R. China
    Abstract:

    This paper examined the influence of various parameters such as fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed on the fibre packing pattern in a Yarn cross-section for vortex spun Yarn. Cross-section images of vortex spun Yarns were used to evaluate the fibre packing pattern. Results from different variables influencing the fibre packing pattern for vortex spun Yarn were also analysed. The results indicated that the fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed are all significant parameters for Yarn hairiness and fibre packing density in a vortex spun Yarn cross-section. Key words: vortex spun Yarn, process parameter, fibre packing density, Yarn structure. of vortex spun Yarn. Zheng et al. [13] in-vestigated the fibre packing density and effective fibre packing density of vortex and ring spun Yarns, and also calculate

  • Effect of process variables on properties of viscose vortex coloured spun Yarn
    Indian Journal of Fibre and Textile Research, 2014
    Co-Authors: Zhuan Yong Zou
    Abstract:

    The vortex spinning machine has been used to develop coloured spun Yarn which is commonly used in the Yarn-dyed fabrics. Based on the Box and Behnkan Design, the regression analysis of response surface is used to study effects of process variables, namely nozzle pressure, Yarn delivery speed and Yarn count, on the properties of viscose vortex coloured spun Yarn, such as Yarn tenacity, elongation-at-break, evenness and diameter. The results show that different response. variables are affected by different combinations of model terms. Yarn tenacity is significantly affected by Yarn delivery speed, Yarn count, and quadratic terms of nozzle pressure and Yarn delivery speed. Yarn delivery speed has a nonlinear and marked effect on Yarn elongation-at-break, while Yarn count has a linear effect on Yarn elongation-at-break. Yarn evenness is significantly influenced by nozzle pressure, Yarn delivery speed and Yarn count. There is interaction between Yarn delivery speed and Yarn count. Yarn hairiness H value is significantly affected by nozzle pressure and Yarn delivery speed. Compared with Yarn delivery speed, Yarn count and nozzle pressure have a significant effect on Yarn diameter.

  • study of the stress relaxation property of vortex spun Yarn in comparison with air jet spun Yarn and ring spun Yarn
    Fibres & Textiles in Eastern Europe, 2012
    Co-Authors: Zhuan Yong Zou
    Abstract:

    The structure of vortex spun Yarn made by the Murata vortex spinning machine is different from that of other Yarns, such as ring spun Yarn, air-jet spun Yarn and so on. The stress relaxation model is constructed by a generalized Maxwell model connected in a row to a Hook’s spring in order to predict and analyse the stress relaxation property of vortex spun Yarn. Based on the stress relaxation model, the stress relaxation properties of vortex spun Yarn, ring spun Yarn and air-jet spun Yarn are compared and analysed. The factors influencing the stress relaxation property of vortex spun Yarn, such as the tensile strain, tensile rate and Yarn count are discussed. The research results show that the stress relaxation model can be used for describing the stress relaxation mechanism of vortex spun Yarn. The elasticity of vortex spun Yarn is better than that of air-jet spun Yarn, but worse than that of ring spun Yarn. When the tensile strain is lower and the tensile rate is larger, vortex spun Yarn has a more obvious stress relaxation phenomenon. The stress relaxation phenomenon of finer Yarn is more obvious than that of coarser Yarn.

Shaoming Zheng - One of the best experts on this subject based on the ideXlab platform.

  • Effect of Some Variables on the Fibre Packing Pattern in a Yarn Cross-section for Vortex Spun Yarn
    2016
    Co-Authors: Zhuan Yong Zou, Long Di Cheng, Shaoming Zheng, Jiangwei Yao, Jinjiang Laboratory, P. R. China
    Abstract:

    This paper examined the influence of various parameters such as fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed on the fibre packing pattern in a Yarn cross-section for vortex spun Yarn. Cross-section images of vortex spun Yarns were used to evaluate the fibre packing pattern. Results from different variables influencing the fibre packing pattern for vortex spun Yarn were also analysed. The results indicated that the fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed are all significant parameters for Yarn hairiness and fibre packing density in a vortex spun Yarn cross-section. Key words: vortex spun Yarn, process parameter, fibre packing density, Yarn structure. of vortex spun Yarn. Zheng et al. [13] in-vestigated the fibre packing density and effective fibre packing density of vortex and ring spun Yarns, and also calculate

  • Effect of Some Variables on the Fibre Packing Pattern in a Yarn Cross-section for Vortex Spun Yarn
    Fibres & Textiles in Eastern Europe, 2014
    Co-Authors: Shaoming Zheng, Long Di Cheng, Bojun Xi
    Abstract:

    This paper examined the influence of various parameters such as fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed on the fibre packing pattern in a Yarn cross-section for vortex spun Yarn. Cross-section images of vortex spun Yarns were used to evaluate the fibre packing pattern. Results from different variables influencing the fibre packing pattern for vortex spun Yarn were also analysed. The results indicated that the fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed are all significant parameters for Yarn hairiness and fibre packing density in a vortex spun Yarn cross-section.

  • a study of the fiber distribution in Yarn cross section for vortex spun Yarn
    Textile Research Journal, 2012
    Co-Authors: Shaoming Zheng, Wei Shen, Long Di Cheng
    Abstract:

    The image-processing method, based on Photoshop software, was used to analyze the fiber distribution pattern in Yarn cross section for vortex-spun Yarn. Fiber packing density and fiber effective packing density, as well as the fiber migration index, were investigated to provide a better understanding of the internal structures of vortex-spun Yarn. The research results indicate that the vortex-spun Yarn has a lower fiber packing density value than the conventional ring-spun Yarn at the Yarn center and surface. For the bamboo pulp fiber/white cotton blend vortex-spun Yarn, the bamboo pulp fibers are more easily distributed in the Yarn core. In addition, the coarser the vortex-spun Yarn, the higher the migration level of the bamboo pulp fiber tending to migrate towards the inner layer of the blend Yarn.

Long Di Cheng - One of the best experts on this subject based on the ideXlab platform.

  • Effect of Some Variables on the Fibre Packing Pattern in a Yarn Cross-section for Vortex Spun Yarn
    2016
    Co-Authors: Zhuan Yong Zou, Long Di Cheng, Shaoming Zheng, Jiangwei Yao, Jinjiang Laboratory, P. R. China
    Abstract:

    This paper examined the influence of various parameters such as fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed on the fibre packing pattern in a Yarn cross-section for vortex spun Yarn. Cross-section images of vortex spun Yarns were used to evaluate the fibre packing pattern. Results from different variables influencing the fibre packing pattern for vortex spun Yarn were also analysed. The results indicated that the fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed are all significant parameters for Yarn hairiness and fibre packing density in a vortex spun Yarn cross-section. Key words: vortex spun Yarn, process parameter, fibre packing density, Yarn structure. of vortex spun Yarn. Zheng et al. [13] in-vestigated the fibre packing density and effective fibre packing density of vortex and ring spun Yarns, and also calculate

  • Effect of Some Variables on the Fibre Packing Pattern in a Yarn Cross-section for Vortex Spun Yarn
    Fibres & Textiles in Eastern Europe, 2014
    Co-Authors: Shaoming Zheng, Long Di Cheng, Bojun Xi
    Abstract:

    This paper examined the influence of various parameters such as fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed on the fibre packing pattern in a Yarn cross-section for vortex spun Yarn. Cross-section images of vortex spun Yarns were used to evaluate the fibre packing pattern. Results from different variables influencing the fibre packing pattern for vortex spun Yarn were also analysed. The results indicated that the fibre fineness, Yarn count, distance from the front roller nip point to the hollow spindle, nozzle pressure and Yarn delivery speed are all significant parameters for Yarn hairiness and fibre packing density in a vortex spun Yarn cross-section.

  • a study of the fiber distribution in Yarn cross section for vortex spun Yarn
    Textile Research Journal, 2012
    Co-Authors: Shaoming Zheng, Wei Shen, Long Di Cheng
    Abstract:

    The image-processing method, based on Photoshop software, was used to analyze the fiber distribution pattern in Yarn cross section for vortex-spun Yarn. Fiber packing density and fiber effective packing density, as well as the fiber migration index, were investigated to provide a better understanding of the internal structures of vortex-spun Yarn. The research results indicate that the vortex-spun Yarn has a lower fiber packing density value than the conventional ring-spun Yarn at the Yarn center and surface. For the bamboo pulp fiber/white cotton blend vortex-spun Yarn, the bamboo pulp fibers are more easily distributed in the Yarn core. In addition, the coarser the vortex-spun Yarn, the higher the migration level of the bamboo pulp fiber tending to migrate towards the inner layer of the blend Yarn.

Shankar Ganesan - One of the best experts on this subject based on the ideXlab platform.

  • Fibre migration in compact spun Yarns: Part II - Mechanical compact Yarn
    Indian Journal of Fibre and Textile Research, 2007
    Co-Authors: Shankar Ganesan, ANANDA VENKATACHALAM, Vaseetha Subramaniam
    Abstract:

    Fibre migration of ring and mechanical compact spun combed cotton Yarns (40s Ne) has been studied using the tracer fibre technique. It is observed that the migration parameters for compact Yarn made from Mechanical Compacting System (MCS)–positive nip are 10-15 % lower than that of the ring Yarn and similar to that of pneumatic compact Yarn of the same count. However, only a marginal reduction (2-6%) is observed in migration parameter for compact Yarn made from MCS– semi-positive nip as compared to ring Yarn and it is not significant. Significantly lower degree of migration is observed in mechanical compact Yarn spun from MCS–positive nip than in ring Yarn due to the significant reduction in size of the spinning triangle in the system and its consequence in the tension gradient. In the case of MCS–semi-positive nip, the base of the spinning triangle remaining the same, its altitude increase causes slight reduction in tension gradient, resulting in marginal change in migration parameters. Yarn diameter of mechanical compact Yarn from MCS–positive nip system is found to be significantly lower than that of ring Yarn and similar to pneumatic compact Yarn, which contributes to increase in strength by 10-15%. The Yarn from MCS–semi-positive nip system has shown a marginal reduction in Yarn diameter and hence the increase in strength is marginal (3-5%).

  • Fibre migration in compact-spun Yarns: Part I—Pneumatic compact Yarn
    2006
    Co-Authors: Shankar Ganesan, G. Ramakrishnan
    Abstract:

    Fibre migration of regular ring-spun vis-a-vis compact-spun (pneumatic compact) combed cotton Yarns has been studied using the tracer fibre technique for the di fferent migration parameters. The Yarn counts used were 40s and 52s Ne ( 14.8 tex and 1 1 .4 tex). It is observed that the migration parameters for compact Yarn are 1 0-25% lower than those of regular Yarn in both 40s and 52s Ne counts. The degree of migration is found to be lower in compact-spun Yarn than in ring-spun Yarn due to the reduction in size of spinning triangle and its consequence in the tension gradient. Even though this causes significant change in degree of migration, its contribution is less in comparison to the tension gradient due to fibre occupying different radial positions. The diameter of compact Yarn is found to be lower than that of regular Yarn in both the cases and this indicates that the packing densities are different. H igher packing density coupled with better integration of fibres i nto the Yarn body results in higher Yarn strength.

  • fibre migration in compact spun Yarns part i pneumatic compact Yarn
    IJFTR Vol.31(3) [September 2006], 2006
    Co-Authors: Shankar Ganesan, G. Ramakrishnan
    Abstract:

    Fibre migration of regular ring-spun vis-a-vis compact-spun (pneumatic compact) combed cotton Yarns has been studied using the tracer fibre technique for the di fferent migration parameters. The Yarn counts used were 40s and 52s Ne ( 14.8 tex and 1 1 .4 tex). It is observed that the migration parameters for compact Yarn are 1 0-25% lower than those of regular Yarn in both 40s and 52s Ne counts. The degree of migration is found to be lower in compact-spun Yarn than in ring-spun Yarn due to the reduction in size of spinning triangle and its consequence in the tension gradient. Even though this causes significant change in degree of migration, its contribution is less in comparison to the tension gradient due to fibre occupying different radial positions. The diameter of compact Yarn is found to be lower than that of regular Yarn in both the cases and this indicates that the packing densities are different. H igher packing density coupled with better integration of fibres i nto the Yarn body results in higher Yarn strength.

T. Theyson - One of the best experts on this subject based on the ideXlab platform.

  • effect of relative rubbing speed on the tribo electrification of continuous filament Yarn by stainless steel pins
    Journal of The Textile Institute, 2011
    Co-Authors: William Oxenham, Abdel Fattah M Seyam, T. Theyson
    Abstract:

    The effect of relative rubbing speed on the tribo‐electrification between different continuous filament Yarns and stainless steel “charging pins” was analysed. A modified linear tester, housed in an environmental room, was used to charge the Yarn while transporting at desired speed and input tension. The Yarn was rubbed against the charging pin, which was also rotated at different speeds. The Yarn surface charge, Yarn output tension and charging pin’s vibration were monitored in real time automatically. The results showed that for nylon Yarn charge was minimized when the Yarn/pin relative speed approached zero, regardless of the absolute rubbing speeds of Yarn and pin. It was also found that, at the same relative speed, less charge was generated when a larger pin was used. For finish‐free nylon Yarn, the charge was also minimized as the relative speed approaches zero; however, for finish‐free polyester Yarn and finish‐free polypropylene Yarn, the effect of relative rubbing speed on the electrification was...

  • Effect of relative rubbing speed on the tribo‐electrification of continuous filament Yarn by stainless steel pins
    Journal of The Textile Institute, 2011
    Co-Authors: William Oxenham, Abdel Fattah M Seyam, T. Theyson
    Abstract:

    The effect of relative rubbing speed on the tribo‐electrification between different continuous filament Yarns and stainless steel “charging pins” was analysed. A modified linear tester, housed in an environmental room, was used to charge the Yarn while transporting at desired speed and input tension. The Yarn was rubbed against the charging pin, which was also rotated at different speeds. The Yarn surface charge, Yarn output tension and charging pin’s vibration were monitored in real time automatically. The results showed that for nylon Yarn charge was minimized when the Yarn/pin relative speed approached zero, regardless of the absolute rubbing speeds of Yarn and pin. It was also found that, at the same relative speed, less charge was generated when a larger pin was used. For finish‐free nylon Yarn, the charge was also minimized as the relative speed approaches zero; however, for finish‐free polyester Yarn and finish‐free polypropylene Yarn, the effect of relative rubbing speed on the electrification was...