scholarly journals Research on the Qualities of Cellulosic Yarn

2018 ◽  
Vol 26 (1(127)) ◽  
pp. 30-35
Author(s):  
Iwona Frydrych ◽  
Xuzhong Su ◽  
Xiaoxuan Qin ◽  
Xiaoxuan Qin ◽  
Xiaoxuan Qin ◽  
...  
Keyword(s):  
Cross Sections ◽  
Viscose Fibre ◽  
Breaking Strength ◽  
Ring Spinning ◽  
Textile Processing ◽  
Sampling Device ◽  
Spun Yarn ◽  
Fundamental Process ◽  
Spun Yarns ◽  
Compact Spinning

Cellulosic fibre is a kind of renewable fibre that has attracted more and more attention in textile processing recently. Yarn spinning is the first fundamental process in textile processing. Therefore, in this paper, taking viscose fibre and tencel fibre as examples, the qualities of cellulosic yarn were studied. Three kinds of pure viscose and tencel yarn: 14.6 tex (40S), 9.7 tex (60S) and 7.3 tex (80S), were spun on a ring spinning system modified with lattice apron compact spinning (LACS) and complete condensing spinning (CCS), respectively. The spun yarn qualities, yarn evenness, breaking strength and hairiness, were tested and comparatively analysed. Then two kinds of cellulosic blend yarn including 14.6 tex, 9.7 tex and 7.3 tex JC/R 60/40 yarn, and 14.6 tex, 9.7 tex and 7.3 tex JC/T 70/30 yarns were spun on a ring spinning system modified with CCS. The spun yarn evenness, breaking strength and hairiness were tested, and the cross sections of the spun yarns were presented using a Y172 Hardy’s thin cross-section sampling device. The results show that for both the pure viscose and tencel yarn, compared with LACS, CCS has better yarn evenness, a little lower yarn breaking strength and a little more hairiness, while the uniformity of yarn qualities are all improved. For the cellulosic blend yarn, compared with the pure cellulosic yarn, yarn evenness is worse, especially for the cotton and tencel blend yarn.

Comparison of Filament-Core Spun Yarns Produced by New and Conventional Methods

1992 ◽  
Vol 62 (2) ◽  
pp. 67-73 ◽  
Author(s):  
A. P. S. Sawhney ◽  
G. F. Ruppenicker ◽  
L. B. Kimmel ◽  
K. Q. Robert
Keyword(s):  
Cross Sections ◽  
High Strength ◽  
Improved Method ◽  
Ring Spinning ◽  
Paper Briefly ◽  
Cover Factor ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Core Yarn ◽  
Sewing Threads

In recent years, we have been reporting our research on composite yarns of mostly cotton content produced on a modified ring spinning system. Recently, we reported an improved method of producing an all staple-core spun yarn, and we have applied the same method to filament-core spinning, obtaining a yarn of greatly improved quality. The new filament-core yarn has almost total core coverage, does not strip, and is about 10% stronger (probably due to its improved yarn structure) than a conventional filament-core yarn. This paper briefly describes the new and conventional core spinning methods and evaluates nylon filament-core/cotton-wrap yarns produced with them. There is also a comparison of the cover factor, strip resistance, and microscopic cross sections of a few other core yarns (with Kevlar, fiberglass, and polyester cores). A significant improvement in the cover factor of the new yarn suggests that it may be very useful for sewing threads; ropes; twines; cables; special military, industrial, and surgical fabrics; and other textiles in which the high strength, durability, and a 100% cotton surface (for ease of finishing or coating) are important.

Analysis of the appearance of two-color cotton yarn by the double-channel spinning system

2018 ◽  
Vol 89 (9) ◽  
pp. 1712-1724 ◽  
Author(s):  
Mingrui Guo ◽  
Fengxin Sun ◽  
Lei Wang ◽  
Yuan Xue ◽  
Ruihua Yang ◽  
...  
Keyword(s):  
Weight Ratio ◽  
Fiber Distribution ◽  
Ring Spinning ◽  
Surface Distribution ◽  
Left Hand ◽  
Spun Yarns ◽  
The Mean ◽  
Compact Spinning ◽  
The Right ◽  
Double Channel

The main aim of this paper is to investigate the fiber distribution on the surface of a kind of novel two-color yarn spun by regulating the feeding ratio of two colored rovings on a modified ring spinning frame, which is named the double-channel spinning frame. The surface distribution ratio ( SDR) and the coefficient of variation of surface distribution evenness ( CV sd) of the two colored fiber strands in the yarns was used to quantify the fiber distribution feature along the yarns based on a purpose-made image acquisition device and the corresponding image processing method. The effect of the weight ratio, roving feeding position and spinning method on the mean SDR and CV sd were studied, and the testing results of the Z-twist and S-twist two-color yarns spun by a modified traditional ring spinning frame as well as the yarns spun by a modified compact spinning frame were compared with each other. The fibers of the left-hand roving are more likely to distribute in the surface of Z-twist yarn, while the fibers of the right-hand roving tend to distribute in the surface of S-twist yarn. Four linear fitting equations of the 19.4 tex Z-twist and S-twist two-color ring spun yarns and two-color compact spun yarns were developed to predict the relationships between the mean SDR and weight ratio of two colored fibers.

A Study on Physical Properties of Microfilament Composite Yarns

2016 ◽  
Vol 11 (3) ◽  
pp. 155892501601100 ◽  
Author(s):  
Esin Sarioğlu ◽  
Osman Babaarslan
Keyword(s):  
Tensile Properties ◽  
Textile Industry ◽  
Ring Spinning ◽  
Twist Factor ◽  
Statistical Effect ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Yarn Count ◽  
Ring Spun Yarn ◽  
Sheath Material

In the textile industry, composite yarns with multifilament cores are used to impart strength. There are various spinning systems to produce composite core-spun yarns. In this study, to determine the effects of filament fineness on yarn characteristics of composite yarns, polyester filaments with medium, fine and micro fiber linear densities were used as the core portion and cotton fiber was used as the sheath material. Yarn samples were manufactured using a modified ring spinning system with four different yarn counts and constant twist factor (ae). The effect of filament linear density on yarn tensile properties, unevenness and imperfections was determined. Yarn evenness and tensile properties were compared with 100% cotton ring spun yarn and to each other. When relative amount of core increases, it was observed that composite yarns had improved tenacity and elongation compared to 100% cotton ring spun yarn. Although filament fineness was found to have a significant effect on the CVm % properties, there was no statistical effect on imperfections other than yarn count parameter.

scholarly journals Effect of Nozzle Structural Parameters on Hairiness of Compact-Jet Yarns

2012 ◽  
Vol 7 (2) ◽  
pp. 155892501200700 ◽  
Author(s):  
Demet Yilmaz ◽  
Mustafa Resit Usal
Keyword(s):  
Structural Parameters ◽  
Low Cost ◽  
Ring Spinning ◽  
System A ◽  
Research Activities ◽  
Spun Yarns ◽  
Yarn Hairiness ◽  
Air Nozzle ◽  
Compact Spinning ◽  
Nozzle Head

Hairiness significantly influences the appearance of yarns and fabrics. New methods and spinning systems have been offered to reduce it. Nevertheless, there is still the quest for easy, low-cost processes to produce good quality yarns with reduced hairiness. Therefore, due to its considerable importance for spun yarns, we worked on a new spinning method to decrease yarn hairiness. Many researchers have been studying the use of air nozzles in the spinning and also the winding processes, and they indicated that hairiness decreases by up to 40–50%. From this point, we investigated the use of an air nozzle on a compact spinning system and discussed the effect on yarn hairiness. The nozzle was positioned at the exit of the drafting system on a RoCoS compact spinning system and pressurized air was fed into the nozzle by the compressor during spinning. We called the combination of an air nozzle and a compact spinning system a Compact-Jet spinning system. In the literature, there are no such trials. At the end of the study, it was determined that a Compact-Jet spinning system truly improves hairiness by up to 40% in comparison to the compact spinning system and by up to 70% compared with the conventional ring spinning system. Regarding the nozzle structural parameters, the changes in hairiness indicate that the main hole diameter and nozzle outlet design make the most important contributions in reducing yarn hairiness; whereas the injector angle and nozzle head type show weaker effects. As a result, the Compact-Jet can be considered as an innovative spinning system providing the opportunity to produce less hairy yarn. Additionally, we believe that this study makes an important contribution to the research activities in the spinning field and its associated literature.

Air and Ring Combination in Tandem Spinning

1997 ◽  
Vol 67 (3) ◽  
pp. 217-223 ◽  
Author(s):  
A. P. S. Sawhney ◽  
L. B. Kimmel
Keyword(s):  
Spindle Speed ◽  
Optimum Level ◽  
Ring Spinning ◽  
Air Jet ◽  
Yarn Twist ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Ring Spun Yarn ◽  
Twist Level ◽  
Air Nozzle

With the objective of boosting ring spinning productivity, a new tandem spinning system combining air-jet and ring spinning technologies in continuous tandem is investigated. In this “air-plus-ring” tandem spinning system, a drafted roving strand as it emerges from the front roller nip feeds into a single- or dual-jet air nozzle where it is subjected to a vortex of compressed air, producing a pneumatically entangled, false-twisted, partially strengthened strand. This so-called prefabricated, air-bolstered strand continuously feeds into a standard ring spinning zone and is ultimately spun into a novel, single-component yarn. By spinning a few cotton and cotton-blend yarns with the lowest practical twist levels possible on both the tandem and conventional ring spinning systems, we show that a tandem spun yarn can be produced with a relatively lower (true ring) twist level than a pure ring spun yarn. To an extent, the tandem spinning's air-bolstering action reinforces the drafted fibrous strand, contributing to yarn formation and hence character. Since ring spinning productivity is inversely proportional to yarn twist level, the relatively lower twist level required in tandem spinning allows a proportionately higher yarn production speed (in some cases, up to 50% faster than the conventional ring spinning), while maintaining spindle speed at the traditional, optimum level imposed by the limiting traveler speed. Tandem spun yarns, however, are somewhat different from, and generally weaker than, conventional ring spun yarns. This paper briefly describes a prototype of the new tandem spinning system developed on a laboratory Spintester, and shows spinning parameters and properties of a few yarns produced on both the tandem arid conventional ring spinning systems, each employing the traditional (maximum) optimum spindle speed of 10,000 rpm for a given 5.0 cm (2 inch) diameter ring.

scholarly journals An Intelligent Model to Predict Breaking Strength of Rotor Spun Yarns Using Gene Expression Programming

2012 ◽  
Vol 7 (2) ◽  
pp. 155892501200700 ◽  
Author(s):  
Abdolrasool Moghassem ◽  
Alireza Fallahpour ◽  
Mohsen Shanbeh
Keyword(s):  
Gene Expression ◽  
Breaking Strength ◽  
Gene Expression Programming ◽  
Ann Model ◽  
Spun Yarn ◽  
Yarn Properties ◽  
Spun Yarns ◽  
Artificial Neural Network Ann ◽  
High Degree ◽  
Prediction Approach

Exploring relationships between characteristics of a yarn and influencing factors is momentous subject to optimize the selection of the variables. Different modelling methodologies have been used to predict spun yarn properties. Developing a prediction approach with higher degree of precision is a subject that has received attention by the researchers. In the last decade, Artificial Neural Network (ANN) has been developed successfully for textile nonlinear processes. In spite of the precision, ANN is a black box and does not indicate inter-relationship between input and output parameters. Hence, Gene Expression Programming (GEP) is presented here as an intelligent algorithm to predict breaking strength of rotor spun yarns based on draw frame parameters as one of the most important stages in spinning line. Forty eight samples were produced and different models were evaluated. Prediction performance of the GEP was compared with that of ANN using Mean Square Error (MSE) and correlation coefficient (R2-Value) parameters on test data. The results showed a better capability of the GEP model in comparison to the ANN model. The R2-value and MSE were 97% and 0.071 respectively which means desirable predictive power of GEP algorithm. Finally, an equation was extracted to predict breaking strength of the yarns with a high degree of accuracy using GEP algorithm.

scholarly journals Investigating the Effects of Core Spun Yarns on the Quick-Dry Property of Towels

2018 ◽  
Vol 26 (3(129)) ◽  
pp. 46-51
Author(s):  
Sait Yılönü ◽  
Belkıs Zervent Ünal
Keyword(s):  
Raw Materials ◽  
Water Absorbency ◽  
Ring Spinning ◽  
Basic Properties ◽  
Weft Direction ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Core Yarn

The purpose of this study was to investigate the effects of core-spun yarn on the quick-dry property of towels. This study focused on five different raw materials (modal, cotton, polyester, bamboo, viscose) which are the most frequently used in towel production. Seven different core yarns and five different conventional yarns were produced with these fibres on a ring spinning machine. These yarns were used in the weft direction of the towels. Samples produced with the same ground and pile warp yarns were subjected to constant dyeing conditions. All samples were tested for strength, softness, hydrophilicity and quick drying. As a result, polyester core yarn on the towels did not negatively affect basic properties such as water absorbency, softness and strength. However, the usage of polyester core yarns provided better quick dry properties than that of conventional yarns.

Mechanism and Confirmation in Compact Spinning with Suction Groove

2012 ◽  
Vol 468-471 ◽  
pp. 1962-1965
Author(s):  
Hong Cai Ma ◽  
Shi Lin Lu ◽  
Long Di Cheng ◽  
Shi Ping Xu
Keyword(s):  
Breaking Strength ◽  
Quality Parameters ◽  
Breaking Elongation ◽  
Related Data ◽  
Spun Yarns ◽  
Spinning Triangle ◽  
Compact Spinning ◽  
Harmful Effects

Compact spinning eliminated the harmful effects of spinning triangle, as the edge fibers are incorporated into the yarn due to the elimination of the spinning triangle. The compact yarns possess less hairiness, higher breaking strength and breaking elongation compared with the conventional ring-spun yarns. In this article, we study the mechanism of compact spinning with suction groove and analyze the compact action in twisting fiber strip. Some quality parameters of wool compact spinning with suction groove are compared with those of wool conventional ring-spun yarns. The changes of hairiness are analyzed in the different spinning conditions. This provides related data for improving compact spinning system with suction groove.

Study on properties of elastic core-spun yarns containing a mix of spandex and PET/PTT bi-component filament as core

2017 ◽  
Vol 88 (9) ◽  
pp. 1065-1076 ◽  
Author(s):  
Tao Hua ◽  
Ngo S Wong ◽  
Wai M Tang
Keyword(s):  
Draw Ratio ◽  
Linear Density ◽  
Test Results ◽  
Ring Spinning ◽  
Elastic Core ◽  
Spun Yarn ◽  
Yarn Properties ◽  
Spun Yarns ◽  
Core Components ◽  
Yarn Hairiness

This paper presents a development of elastic core-spun yarn containing a mix of spandex and polyethylene terephthalate/polytrimethylene terephthalate (PET/PTT) bi-component filament as core to obtain better yarn properties, especially for elastic property. Eight types of core-spun yarns, consisting of different core components with various values of linear density and covered with cotton fibers, were produced using a modified ring-spinning machine with a core spinning attachment. The influences of core components, linear density, and draw ratio of spandex on yarn structure and properties were investigated. The experimental results demonstrate that core-spun yarns containing a mix of spandex and PET/PTT bi-component filament have much lower yarn stress decay as well as lower hairiness and CVm value of evenness compared to the yarns using only spandex. For the yarns containing a mix of spandex and PET/PTT bi-component filament, the yarns containing 70 denier spandex have higher elongation and stress decay compared to the yarns containing 40 denier spandex. The test results show that the elongation of yarns containing a mix of spandex and PET/PTT bi-component filament increases with the increase of the draw ratio of spandex. The stress decay of yarns containing a mix of 70 denier spandex and PET/PTT filament shows a similar trend to the elongation. Moreover, the yarn samples containing a mix of spandex and PET/PTT filament as core exhibit good yarn evenness, with very few thick places and neps, as well as low yarn hairiness.

scholarly journals A Comparative Study between Physical Properties of Compact and Ring Yarn Fabrics Produced from Medium and Coarser Yarn Counts

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ghada Ali Abou-Nassif
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Breaking Strength ◽  
Physical And Mechanical Properties ◽  
Air Permeability ◽  
Woven Fabrics ◽  
Ring Yarn ◽  
Spun Yarns ◽  
Compact Spinning ◽  
Tearing Strength

In compact spinning, fibers in drawing stage are condensed using air suction, which results in the produced yarns which significantly differ from ring spun yarns in their physical and mechanical properties. This study compares between physical properties of compact and ring yarn fabrics woven from coarser and medium yarn counts. The experimental results were statistically analyzed using ANOVA. The findings of this study revealed that woven fabrics produced from compact spun yarns are superior to those produced from ring spun yarns with respect to breaking strength, breaking elongation, abrasion resistance, tearing strength, and air permeability.

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