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.

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.

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.

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).

Analysis of the influence of the guided needle structure on the vortex spinning process and yarn properties

2018 ◽  
Vol 89 (7) ◽  
pp. 1246-1257 ◽  
Author(s):  
Chenchen Han ◽  
Longdi Cheng ◽  
Weidong Gao ◽  
Yuan Xue ◽  
Wenliang Xue ◽  
...  
Keyword(s):  
High Speed ◽  
Structure And Properties ◽  
Dynamics Model ◽  
Airflow Velocity ◽  
Binding Force ◽  
Yarn Properties ◽  
Production Practice ◽  
Spinning Process ◽  
Needle Structure ◽  
Yarn Structure

Based on the nozzle structures of MVS870 and J26, this paper analyzed the influence of the guided needle existence and length on the vortex spinning process and yarn properties. In this research, we compared the airflow pressure and velocity distribution under different guided needle structures in the twisting cavity, combining with the numerical simulation of the fluid dynamics model. The influence of the negative pressure and the airflow velocity changing law on the yarn structure and properties was verified by experiments in this paper. The results show that the existence of the guided needle structure could help the head end of the single fiber get into the center of the yarn with less pulling-out by the high-speed rotating airflow, and then improve the yarn tightness and the yarn binding force on the fibers, which will result in a greater extent, as the length of the guided needle is larger. This study present a feasible theoretical analysis for the influence of the guided needle structure on the vortex spinning process and yarn properties, which has guiding significance in actual production practice.

The impact of combing and processing parameters on the structure and properties of fine count vortex yarns

2012 ◽  
Vol 83 (4) ◽  
pp. 396-405 ◽  
Author(s):  
N Erdumlu ◽  
W Oxenham ◽  
B Ozipek
Keyword(s):  
Processing Parameters ◽  
Short Fiber ◽  
Fiber Content ◽  
Structure And Properties ◽  
Factors Affecting ◽  
Yarn Properties ◽  
Spun Yarns ◽  
Yarn Count ◽  
Yarn Structure ◽  
The Impact

In this paper, the impact of short fiber content, yarn count and yarn delivery speed on the structure and properties of fine count cotton vortex yarns were investigated. The factors affecting the fine count yarn spinning on a vortex spinning system were determined on the basis of yarn structure and properties by using the linear regression technique. Moreover, the spinning limits of combed cotton vortex spun yarns were investigated. The results of the experiments revealed that the short fiber content in the cotton sliver is an important parameter in spinning fine count vortex spun yarns. The lower short fiber content in the sliver allows finer counts to be spun in the vortex spinning system. It was also observed that yarn delivery speed influences the yarn structure, and hence the yarn properties significantly, since it determines the residence time of the fibers in the yarn formation zone, and also affects the fiber control due to the air flow caused by the surface speed of the delivery rollers. In addition, the structure and properties of vortex spun yarns change significantly with regard to yarn count.

Investigation into the effects of yarn structure and yarn count on different types of core-spun yarns

2021 ◽  
pp. 004051752110214
Author(s):  
Samah M E Elrys ◽  
Fawkia Faheem El- Habiby ◽  
Rehab Abd Elkhalek ◽  
Ahmed S Eldeeb ◽  
Abdellatif M El-Hossiny
Keyword(s):  
Pairwise Comparison ◽  
Factorial Analysis ◽  
Sem Images ◽  
Elastic Core ◽  
Yarn Properties ◽  
Spun Yarns ◽  
Yarn Count ◽  
Yarn Structure ◽  
Yarn Hairiness ◽  
Dual Core

The scope of this research is to study the effect of yarn structure and yarn count on properties of types of core-spun yarns, including elastic core/T400, elastic core/Lycra, dual core, and tri-core yarns. Five types of yarn structures and three yarn counts were produced. Mechanical properties, yarn irregularity, imperfections, and hairiness were measured. Full-factorial analysis and Tukey tests were performed on the test results. It was concluded from factorial analysis that yarn count, yarn structure, and two-way interaction had a significant effect on yarn properties, except for yarn hairiness where the effect of yarn structure and two-way interaction was not significant. A Tukey pairwise comparison was used in this study to specify exactly the subgroups of yarn count and yarn structure that have a significant mean difference. The scanning electron microscopy (SEM) images of the dual-core yarns and tri-core yarns were performed to illustrate the structure of these yarns.

Improving fiber trapping with a contact surface during the ring twisting of two cotton yarns

2012 ◽  
Vol 82 (3) ◽  
pp. 272-279 ◽  
Author(s):  
Zhigang Xia ◽  
Weilin Xu ◽  
Xungai Wang
Keyword(s):  
Contact Surface ◽  
Plane Surface ◽  
Geometrical Model ◽  
Variation Analysis ◽  
Significance Level ◽  
Yarn Properties ◽  
Cotton Yarns ◽  
Grooved Surface ◽  
Yarn Hairiness ◽  
Plied Yarn

In this study, a geometrical model was introduced to improve the hair trapping via a surface contacting the yarn-twisting triangle during ring twisting of two single yarns. The fiber-trapping improvement with the contact surface was analyzed theoretically. Then, single Ne 80 ring cotton yarns were used to produce two-ply yarns under different ring-twisting conditions, namely conventional twisting, dry twisting of yarns with a plane surface, wet twisting of yarns with a plane surface, dry twisting of yarns with a grooved surface, and wet twisting of yarns with a grooved surface. Plied yarn properties, including yarn hairiness, strength, and irregularity, were tested. The Student Newman Keuls (SNK) test and variation analysis were also carried out in the SPSS program to study the effect of different contact surfaces on related yarn properties; the significance level was 0.05 for the SNK test and variation analysis. The hairiness of plied yarns was significantly reduced when twisting with the plane or grooved surface, especially for the wet twisting cases. This corresponds well with our model on improving fiber trapping.

Textile Performance Properties of Cotton Fabric Treated with Selected Flame-Retarding Finishes

1977 ◽  
Vol 47 (5) ◽  
pp. 365-371 ◽  
Author(s):  
Stanley P. Rowland ◽  
John S. Mason
Keyword(s):  
Cotton Fabric ◽  
Abrasion Resistance ◽  
Breaking Strength ◽  
Superior Performance ◽  
Disodium Hydrogen Phosphate ◽  
Performance Properties ◽  
Different Types ◽  
The Individual ◽  
Medium Weight ◽  
Selection Of

Seven different types of flame-retarding finishes were applied to light-to-medium weight cotton fabric at add-ons appropriate to pass the DOC FF 3–71 test. The finishes studied were based on tetrakis(hydroxymethyl)phosphonium chloride (THPC), neutralized THPC (THPOH), Fyrol 76, and Pyrovatex CP. The specific finishes were: THPOH-NH3, THPOH-urea-trimethylolmelamine, Proban (THPC-urea precondensate)-NH3, THPC-urea-disodium hydrogen phosphate, Fyrol 76, Fyrol 76-N-methylolacrylamide, and Pyrovatex CP-methylolmelamine. Textile performance properties are reported as a function of add-on of each type of finish; strengths and abrasion resistance of the finished fabrics are considered and discussed as a function of resilience. General trends of decreasing strength and abrasion resistance with increasing resilience were observed for these flame-retardant fabrics. Within this trend there is latitude for selection of finishes that will provide superior performance in the individual textile property such as abrasion resistance, breaking strength, and tearing strength.

Reducing Yarn Hairiness in a Modified Ring Spinning Yarn Path by Various Offsets

2011 ◽  
Vol 331 ◽  
pp. 493-497
Author(s):  
Xu Zhong Su ◽  
Wei Dong Gao ◽  
Ting Ting Wu ◽  
Xin Jin Liu ◽  
Yun Zhang
Keyword(s):  
Critical Region ◽  
Breaking Force ◽  
Ring Spinning ◽  
Fiber Tension ◽  
Yarn Properties ◽  
Spun Yarns ◽  
Spinning Process ◽  
Spinning Triangle ◽  
Yarn Hairiness ◽  
The Right

Spinning triangle is a critical region in the spinning process of yarn. Its geometry influences the distribution of fiber tension in the spinning triangle and the properties of spun yarns, such as the yarn breakage and hairiness. In this paper, the relationships between the spinning angle and yarn properties especially the yarn hairiness were investigated under various horizontal offsets. The properties of spun yarns produced by the modified system were evaluated and analyzed. Both left diagonal and right diagonal yarn arrangements were examined. The results indicate that the right diagonal yarn path leads to reduce yarn hairiness but the left diagonal yarn path leads to increase yarn hairiness; the breaking force of yarn changes little; yarn evenness deteriorates slightly with the changes of offset.

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