scholarly journals Factors Affecting Properties of Yarn Produced by Friction Spinning Machine. Part 6: Effect of Yarn Count, Fiber Materials and Friction Roller Speed on Yarn Properties.

1994 ◽  
Vol 47 (11) ◽  
pp. T266-T274 ◽  
Author(s):  
Hisaaki Kato ◽  
Mamoru Shimakura
Keyword(s):  
Machine Part ◽  
Factors Affecting ◽  
Roller Speed ◽  
Yarn Properties ◽  
Yarn Count ◽  
Fiber Materials

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.

scholarly journals Open-End Yarn Properties Prediction Using HVI Fibre Properties and Process Parameters

2017 ◽  
Vol 17 (1) ◽  
pp. 6-11 ◽  
Author(s):  
Hanen Ghanmi ◽  
Adel Ghith ◽  
Tarek Benameur
Keyword(s):  
Response Surface ◽  
Process Parameters ◽  
Processing Parameters ◽  
Raw Material ◽  
Spun Yarn ◽  
Yarn Properties ◽  
Spun Yarns ◽  
Yarn Count ◽  
Input Variables ◽  
Rotor Spun Yarn

AbstractThis article provides three models to predict rotor spun yarn characteristics which are breaking strength, breaking elongation and unevenness. These models used noncorrelated raw material characteristics and some processing parameters. For this purpose, five different cotton blends were processed into rotor spun yarns having different metric numbers (Nm10, Nm15, Nm18, Nm22, Nm30 and Nm37). Each count was spun at different twist levels. Response surface method was used to estimate yarn quality characteristics and to study variable effects on these characteristics. In this study, predicting models are given by the analysis of response surface after many iterations in which nonsignificant terms are excluded for more accuracy and precision. It was shown that yarn count, twist and sliver properties had considerable effects on the open-end rotor spun yarn properties. This study can help industrial application since it allows a quality management-prediction based on input variables such as fibre characteristics and process parameters.

The Influences of Material and Structure on the UV Protection of Summer Fabrics

2011 ◽  
Vol 298 ◽  
pp. 73-77 ◽  
Author(s):  
Li Dai ◽  
Yi Zhang
Keyword(s):  
Fiber Type ◽  
Fiber Material ◽  
Uv Protection ◽  
Performance Parameters ◽  
Factors Affecting ◽  
Fabric Structure ◽  
Structure Thickness ◽  
Fiber Materials ◽  
Fabric Structures ◽  
Different Thickness

Thin summer fabrics without anti-UV finishing were used as experimental samples and the influences of fabric thickness, tightness, structure and fiber on the anti-UV properties were observed carefully. The measured performance parameters were normalized, to make UV protection properties of different thickness, tightness, fabric structures and fiber materials are comparable. This investigation revealed that the dominant factors affecting fabric anti-ultraviolet property were fabric structure, thickness and fiber type. The anti-UV performance from strong to weak is satin, twill and plain weave in terms of fabric structure; and polyester, silk, hemp and cotton in terms of fiber material. In addition, the anti-UV performances of fabrics positively increase with their thickness, when the other parameters were kept the same.

scholarly journals Measurement of torsional rigidity of yarns with different crimps

2016 ◽  
Vol 88 (6) ◽  
pp. 605-613
Author(s):  
Julie Peiffer ◽  
KyoungOk Kim ◽  
Hiroaki Yoshida ◽  
Masayuki Takatera
Keyword(s):  
Linear Relationship ◽  
Torsional Rigidity ◽  
Measurement Device ◽  
Yarn Properties ◽  
Spun Yarns ◽  
Yarn Count

The effect of crimp on torsional rigidity of monofilament and cotton spun yarns was studied. Two kinds of polymeric monofilament yarns and four kinds of cotton spun yarns were examined. Different crimps were applied to the yarn using original crimp setting equipment. To fix the crimp, the polymeric monofilaments were treated with heat, and the cotton spun yarns were treated with steam. The test samples were then produced following two protocols: with or without the application of weight. The yarn torsional rigidities with crimp were measured using a torsional measurement device, and were compared with those without crimp. Almost no weight was applied to the cotton spun yarns to preserve the crimp during testing. The results with and without the application of weight were compared. For the monofilament yarns, the torsional rigidities of the crimped yarns had a linear relationship with the crimp ratio. For the cotton spun yarns, the torsional rigidities of the crimped yarns were smaller than those of the straight yarns. The smaller the yarn count, the smaller the yarn torsional rigidity. The effect of crimp on torsional rigidity differed according to the yarn counts. There was almost no difference in crimped yarn torsional rigidity between the straightened and non-straightened yarns after crimp setting. Therefore, there is a possibility that the change in yarn properties could have resulted from the bending of the fiber during crimp setting, and not from the shape of the crimp afterwards.

scholarly journals Determination of suitable traveller for definite yarn count: A comparative study

2021 ◽  
Vol 9 (1) ◽  
pp. 036-049
Author(s):  
Padma Kishore Dey ◽  
Bishwajit Das ◽  
Shariful Islam ◽  
Pabitra Kumar Das ◽  
Nobel Chowdhury ◽  
...  
Keyword(s):  
Quality Parameters ◽  
Mass Variation ◽  
Yarn Quality ◽  
Yarn Properties ◽  
Yarn Count ◽  
Low Mass ◽  
Frictional Forces ◽  
Short Time ◽  
High Contact Pressure

The traveller imparts twist to the yarn and enables winding of the yarn on the cop. Yarn quality parameters can be improved by proper traveller weight selection which results in reducing yarn breakage, mass variation, twist variation and hairiness. High contact pressure (up to 35N/mm) is generated between the ring travellers during winding, mainly due to centrifugal force the pressure includes strong frictional forces which in turn lead to significant generation of heat. This is the kernel of the ring/ traveller problem. The low mass of the traveller does not permit dissipation of the generated heat in the short time available. Uster Evenness Tester 5 was used to determine the yarn properties such as unevenness, percentage, imperfection index, hairiness, standard variation of hairiness. Traveller number 5/0 was the best for card 30 Ne compare between traveller number 4/0 Most preeminence fact is that, the traveller speed remained same both for 5/0 and 4/0.

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