The Effect of Blending Ratio and Yarn Twist Multiplier on Polysulfone /Meta-Aramid Blended Yarn Properties

2011 ◽  
Vol 287-290 ◽  
pp. 2552-2556
Author(s):  
Xiang Hong Li ◽  
Jian Hua Yin
Keyword(s):  
Factor Analysis ◽  
Breaking Strength ◽  
High Strength ◽  
Yarn Strength ◽  
Breaking Elongation ◽  
Blended Yarn ◽  
Yarn Twist ◽  
Yarn Properties ◽  
Twist Multiplier ◽  
Yarn Hairiness

The effect of blending ratio and yarn twist multiplier on Polysulfone /Meta-aramid blended yarn properties is studied. Two-factor analysis of variance shows that yarn twist multiplier and blending ration have a significant effect on yarn breaking strength while yarn breaking elongation is affected by yarn twist multiplier considerably. Yarn evenness varies with blending ration delicately. Blending ratio and yarn twist multiplier have little effect on yarn hairiness. Yarn evenness nearly has no change with yarn twist multiplier and yarn breaking elongation remains consistent under different blending ratios. Yarn breaking strength gets higher with Meta-aramid content increasing. When the yarn twist multiplier is small, it’s easy to increase yarn strength by blending high-strength fibers. Yarn breaking elongation gets higher when yarn twist multiplier is larger. Blended yarn evenness gets better with finer Meta-aramid content increasing.

Structure and Properties of Double-Filament Tri-Component Combined Yarn

2014 ◽  
Vol 1035 ◽  
pp. 101-105
Author(s):  
Yi Qiang Gao
Keyword(s):  
Abrasion Resistance ◽  
Manufacturing Process ◽  
Breaking Strength ◽  
Structure And Properties ◽  
Breaking Elongation ◽  
Yarn Properties ◽  
Yarn Structure ◽  
Yarn Hairiness

Manufacturing process of combined yarn with different filament size and cotton roving has been discussed. It shows that filament feeding point has some effect on combined yarn structure and yarn properties. If the filaments are fed from different sides of the cotton strand, they usually wrap the strand in parallel. If the filaments are fed from the same side of the strand, they wrap the strand crossed more often. Filament feeding point has an effect on yarn hairiness while it affects yarn breaking strength, yarn breaking elongation and abrasion resistance slightly. Yarn property weight is determined by subjective empowerment and Borda method is used to analyze yarn property. It has proved that if the filaments are fed from different sides of the cotton strand, the filament-roving space is set at 4mm respectively; the combined yarn shows the best.

Study on Properties of Hard Twist Cotton Yarn

2014 ◽  
Vol 1028 ◽  
pp. 20-24
Author(s):  
Rui Fang Cui ◽  
Xiang Hong Li
Keyword(s):  
Breaking Strength ◽  
Cotton Yarn ◽  
Breaking Elongation ◽  
Yarn Twist ◽  
Twist Factor ◽  
Spun Yarn ◽  
Ring Spun Yarn ◽  
Rotor Spun Yarn ◽  
Yarn Hairiness

Ring-spun cotton yarn and rotor-spun yarn with hard twist factor were manufactured. It shows that yarn breaking strength varies slightly with twist factor, either ring-spun yarn or rotor-spun yarn. Twist factor has little effect on yarn breaking elongation. Yarn number has effect on yarn hairiness for ring-spun yarn and rotor-spun yarn. Coarser yarn has more hairiness than fine yarn. Ring-spun yarn hairiness is higher than rotor-spun yarn. Twist factor has some effect on coarse yarn uniformity while it affects fine yarn uniformity slightly. Ring-spun yarn has higher strength than rotor-spun yarn. Rotor-spun yarn has less elongation and less hairiness than ring-spun yarn and its uniformity is better.

scholarly journals Numerical Simulation of Fiber Motion in the Condensing Zone of Lateral Compact Spinning with Pneumatic Groove

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jindan Lyu ◽  
Longdi Cheng ◽  
Bugao Xu ◽  
Zhihong Hua
Keyword(s):  
Fiber Bundle ◽  
Fiber Model ◽  
Yarn Strength ◽  
Agglomeration Process ◽  
Yarn Twist ◽  
Fiber Motion ◽  
Yarn Properties ◽  
Spinning Process ◽  
Yarn Hairiness ◽  
Compact Spinning

Abstract Lateral compact spinning with pneumatic groove is a spinning process to gather fibers by common actions of airflow and mechanical forces. Compared with ring spinning, it can more effectively reduce yarn hairiness and enhance yarn strength. However, fiber motion in the agglomeration area is complex. And, it is important to establish a new fiber model to accurately describing the fiber motion. The objectives of this research were to create a new fiber model to simulate the agglomeration process, to analyze yarn properties of the lateral compact spinning with pneumatic groove, and to compare with other spinning yarns through a series of tests. The new fiber model was based on the finite element method implemented in MATLAB and was to show the fiber motion during the agglomeration area. The simulation generated results were close to the real motion of fibers in spinning. In the lateral compact spinning with pneumatic groove, fiber bundle through the agglomeration area can be gathered, and the output of the fiber bundle was nearly to cylinder before yarn twisted. The experiments demonstrated that the lateral compact spinning with pneumatic groove can improve the yarn properties: increase the yarn twist, enhance the yarn strength, and reduce the yarn hairiness.

Estimation of yarn strength based on critical slipping length and fiber length distribution

2017 ◽  
Vol 89 (2) ◽  
pp. 182-194 ◽  
Author(s):  
Zhan Jiang ◽  
Chongwen Yu ◽  
Jianping Yang ◽  
Guangting Han ◽  
Mingjie Xing
Keyword(s):  
Fiber Length ◽  
Length Distribution ◽  
Probability Method ◽  
Yarn Strength ◽  
Fiber Length Distribution ◽  
Yarn Twist ◽  
Twist Multiplier ◽  
Strength Based ◽  
Breaking Mechanism ◽  
Yarn Structure

Yarn strength is composed of the total contributions made by all breaking and slipping fibers which are determined by critical slipping length lc. Though the definition of lc has been the focus of many research projects, it still remains unsolved. In this study, idealized assumptions were made on yarn structure, and lc was then estimated. At the same time, the actual contributions that breaking fibers and slipping fibers make to yarn strength were recalculated based on an idealized yarn structure, which was analyzed with the conditional probability method according to fiber length distribution. Then, yarn strength was computed by simulating random fiber arrangement in the yarn. It could be seen from calculated results that the critical slipping length declines as yarn twist multiplier increases. Meanwhile, as the twist multiplier increases, the calculated yarn strength rises to the highest point and then declines, which is in agreement with traditional spinning theory. Thus, the calculation of yarn strength based on critical slipping length could reflect the yarn breaking mechanism with a change in the yarn twist multiplier, and could be applied for further prediction of yarn strength.

Analyzing the effect of spinning process variables on blow room blended cotton melange yarn quality

2018 ◽  
Vol 22 (1) ◽  
pp. 2-14 ◽  
Author(s):  
Suchibrata Ray ◽  
Anindya Ghosh ◽  
Debamalya Banerjee
Keyword(s):  
Quality Parameters ◽  
Spindle Speed ◽  
Process Variables ◽  
Content Type ◽  
Yarn Strength ◽  
Yarn Quality ◽  
Yarn Twist ◽  
Twist Multiplier ◽  
Spinning Process ◽  
Shade Depth

Purpose The use and importance of mélange yarn in apparel sector is increasing day by day. With the gradual increase in market share, achieving the desired quality level of mélange yarn remains a challenge for yarn manufacturing industry. The purpose of this paper is to investigate the effect of raw material (dyed fiber percentage in the mixing), important spinning process variable (yarn twist multiplier) and productivity (spindle rpm of ring frame) on properties of cotton mélange spun yarn. Design/methodology/approach Box and Behnken Design of experiment has been used to investigate the important yarn quality parameters like evenness, imperfection, hairiness, breaking strength and breaking elongation of blow room blended cotton mélange yarn. The quadratic regression model is used to derive the statistical inferences about sensitivity of the yarn quality parameters to the different process variables. The response surfaces are constructed for depicting the geometric representation of yarn quality parameters plotted as a function of process variables. Findings The study shows that shade depth and spindle speed have significant effects on the mélange yarn unevenness and imperfections. Mélange yarn strength and hairiness are significantly affected by shade depth and yarn twist multiplier (TM). Yarn elongation at break is only influenced by the spindle speed. A darker shade is responsible for higher yarn unevenness, imperfection, hairiness and lower yarn strength. A higher spindle speed is also liable for deterioration of yarn quality. Practical implications Many spinning industries are planning to convert their existing spindles from normal gray yarn production to mélange yarn manufacturing. The outcome of this study will lead to achieve better mélange yarn quality and productivity by the industry. Originality/value Research on mélange yarn is itself scant. This study is exclusively conducted to analyze the individual and interactive effect of various process parameters on the mélange yarn quality.

Influence of Technological Parameter for Ramie Yarn Hairiness on Compact Spinning with Suction Groove

2012 ◽  
Vol 217-219 ◽  
pp. 1695-1698
Author(s):  
Hong Cai Ma ◽  
Long Di Cheng ◽  
Gui Xiang Yan ◽  
Shi Ping Xu
Keyword(s):  
Negative Pressure ◽  
Technological Parameter ◽  
Breaking Strength ◽  
Spindle Speed ◽  
Ramie Fiber ◽  
Ring Spinning ◽  
Yarn Properties ◽  
Yarn Hairiness ◽  
Compact Spinning ◽  
Ramie Yarn

The application of compact spinning technology with suction groove for ramie was studied. This technology improved ramie yarn hairiness, breaking strength and so on. The performance of the yarn hairiness was analyzed in detail through contrast test of the compact spinning technology with suction groove and the traditional ring spinning for ramie fiber. At the same time, the comprehensive performances of ramie yarn spinning by the two kinds of spinning technologies were contrasted and analyzed. The results showed that the spinning technology with suction groove can be significantly improved ramie yarn properties: hairiness and breaking strength etc. In the spinning technology with suction groove, the optimal technological parameter for producing least yarn hairiness, A1 B1 C1 D1, is acquired, where the spindle speed A is 6600 r/min, twist B is 608 T/m, the value of negative pressure C is -3.1 kPa, and traveler D is 21 # (yarn Nm 36).

scholarly journals Determination of Optimum Twist Equation for the Long Staple Combed Cotton Ring-Spun Yarn

Fibers ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 59
Author(s):  
Dunja Šajn Gorjanc ◽  
Neža Sukič
Keyword(s):  
Ring Spinning ◽  
Elongation At Break ◽  
Yarn Strength ◽  
Yarn Twist ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Ring Spun Yarn ◽  
Yarn Hairiness ◽  
Spinning Mill

The aim of this research was to determine the optimum twist equation for ring-spun yarns. The yarn twist can be calculated by different equations. With the research, we tried to find the appropriate equation to determine the yarn twist, which is determined by the values of yarn strength and hairiness. In the research, yarns from long staple combed cotton rovings and of different fineness (10 tex, 11.8 tex, 20 tex and 29.4 tex) were analyzed. The yarn twist was calculated using the equations of Koechlin and Laetsch. The analyzed yarns were produced in the spinning mill on the laboratory ring spinning machine Spinntester. In the second part of the investigation, yarn strength and hairiness were analyzed as a function of yarn twist. The results showed that Laetsch’s equation is suitable for determining the twist for yarns with a fineness of 10 tex, 11.8 tex, 20 tex and 29.4 tex, since, in this case, the calculated number of yarn threads is higher and thus the strength and elongation at break are also higher. The yarn hairiness is higher in analyzed samples for yarns with the twist calculated according to the Koechlin’s equation.

Test and Analysis of Shengma Pure Yarn and Shengma/Modal Blended Yarn Mechanical Property

2011 ◽  
Vol 322 ◽  
pp. 310-313
Author(s):  
Qing Bin Yang
Keyword(s):  
Mechanical Property ◽  
Breaking Strength ◽  
Blended Yarn ◽  
Twist Factor ◽  
Spun Yarn ◽  
Yarn Properties

To discuss yarn mechanics property of shengma pure yarn or shengma modal blended yarn with different twist factor and different blending ratio were spun, yarn properties were analyzed. The test shows that shengma contents is about 70%, yarn breaking strength is the lowest, when shengma contents is about 30%-40%, the influences on yarn breaking strength and elongation is simultaneity. 70% is the suitable ratio for shengma fiber in spinning production.

Studies on Properties of Outlast Air-Conditioning Fiber and Blended Yarn

2012 ◽  
Vol 503-504 ◽  
pp. 538-542
Author(s):  
Cai Xia Zhao ◽  
Jia Guang Meng ◽  
Chao Zhi Zhi
Keyword(s):  
Spectral Analysis ◽  
Air Conditioning ◽  
Fiber Strength ◽  
Morphological Structure ◽  
Alkali Resistance ◽  
Yarn Strength ◽  
Blended Yarn ◽  
Infrared Spectral ◽  
Acid And Alkali Resistance ◽  
Yarn Hairiness

This article first introduces the properties and tempering principle of outlast air-conditioning fiber. Then a series of tests, including morphological structure, infrared spectral analysis, fineness, single fiber strength and yarn strength, fineness uniformity, absorbency, moisture content, yarn hairiness, and acid and alkali resistance, has been respectively done to study the basic performances of the fiber and yarn, and the results of test were analyzed and evaluated systematically.

scholarly journals Modal–Cotton Fibre Blend Ratio and Ring Frame Parameter Optimisation Through the Taguchi Method

2019 ◽  
Vol 19 (1) ◽  
pp. 86-96
Author(s):  
R Maheswaran ◽  
V Srinivasan
Keyword(s):  
Parametric Design ◽  
Ring Spinning ◽  
Anova Analysis ◽  
Blend Ratio ◽  
Blended Yarn ◽  
System A ◽  
Ring Frame ◽  
Yarn Properties ◽  
Yarn Tenacity ◽  
Setting Parameters

Abstract The influence of Modal–cotton (MC) fibre blend ratio and ring frame machine parameters such as front top roller loading and break draft on the blended yarn properties has been studied. Compact MC blended yarn samples of 14.75 tex with three different MC fibre blend ratio has been produced in a LR 6 ring spinning frame fitted with Suessen Compact drafting system. A robust design optimisation to minimise the variations of the output yarn properties such as blended yarn tenacity, yarn unevenness and hairiness caused because of the variations in the material as well as machine setting parameters is achieved through the Taguchi parametric design approach. It is found that the maximum compact MC blended yarn tenacity is 23.76 g/tex, which is influenced very much by MC fibre blend ratio but meagrely by top roller loading and break draft. Similarly, the minimum 9.54 U% and 3.59 hairiness index are achieved with 100:0 and 70:30 MC fibre blend ratio, respectively, at 23-kg top roller loading. Statistical ANOVA analysis is performed on the results and optimum values are obtained within the 95% confidential level through confirmation experiments.

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