scholarly journals Thermophysiological wear comfort of viscose and tencel socks

2020 ◽  
Vol 68 (4) ◽  
pp. 22-29
Author(s):  
Beti Rogina-Car ◽  
Zenun Skenderi ◽  
Zlatko Vrljičak
Keyword(s):  
Thermal Resistance ◽  
Cotton Yarn ◽  
Air Jet ◽  
Wear Comfort ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Ring Spun Yarn ◽  
Single Jersey

Men’s socks were designed and manufactured in multiple plated single jersey structure using 20 tex viscose and Tencel yarn, 156 and 220 dtex multifilament PA 6.6 yarn and 25 tex cotton yarn. Sock mass and sock thickness were determined, the height of the sock leg, the length of the sock foot and half of the leg circumference and half of the foot circumference were measured. Thermophysiological sock wear comfort was determined by measuring thermal resistance on the thermal foot manikin. The results revealed that the sock samples containing the ring spun yarn in the structure had higher thermal resistance than the socks containing rotor and air-jet spun yarns. The obtained difference of thermal resistance of the sock samples per type of the basic yarn was significant. The viscose socks made of ring spun yarns with an added coarser cotton yarn and PA 6.6 yarn had the highest thermal resistance, while the lowest thermal resistance was recorded for the Tencel rotor spun yarns

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 Impact of Carding Parameters and Draw Frame Doubling on the Properties of Ring Spun Yarn

2013 ◽  
Vol 8 (2) ◽  
pp. 155892501300800 ◽  
Author(s):  
Abdul Jabbar ◽  
Tanveer Hussain ◽  
Abdul Moqeet
Keyword(s):  
Experimental Design ◽  
Production Rate ◽  
Quality Parameters ◽  
Cotton Yarn ◽  
Yarn Quality ◽  
Spun Yarn ◽  
Ring Spun Yarn ◽  
Yarn Tenacity ◽  
The Impact

The impact of card cylinder speed, card production rate and draw frame doubling on cotton yarn quality parameters was investigated by using the Box-Behnken experimental design. It was found that yarn tenacity, elongation and hairiness increase by increasing the number of draw frame doubling up to a certain level and then decrease by further increase in doubling. Yarn unevenness increased by increasing card production rate and total yarn imperfections increased by decreasing card cylinder speed and increasing card production rate.

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.

Reducing yarn hairiness in ring spinning by an agent-aided system

2019 ◽  
Vol 89 (21-22) ◽  
pp. 4438-4451 ◽  
Author(s):  
Peiying Li ◽  
Mingrui Guo ◽  
Fengxin Sun ◽  
Weidong Gao
Keyword(s):  
Textile Industry ◽  
Speed Ratio ◽  
Rotating Speed ◽  
Comprehensive Properties ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Ring Spun Yarn ◽  
Yarn Hairiness ◽  
Yarn Tenacity

An agent-aided system (AAS) for improving comprehensive properties of ring spun yarns with the aid of viscosity and surface tension of the agent is reported in this paper. The mechanism of the humidification and friction process of the AAS was investigated, and related experiments were also carried out to verify the mechanism of analysis. The results confirm that the AAS can attach the fiber ends protruding out of a yarn body on the yarn surface and assist in twisting the fiber ends back into the interior of the yarn body, resulting in a significant reduction of the modified ring spun yarn hairiness. Moreover, the yarn hairiness is prominently reduced after the winding process. The experimental results also show that a speed ratio of 1.3 between the rotating speed of the cylinder and the output speed of the yarn leads to the greatest extent of harmful hairiness reduction (34%), which also corresponds to optimal modified yarn tenacity. Meanwhile, the modified ring spun yarns show a tight and smooth appearance, and the yarn evenness has no deterioration. In addition, the AAS is applicable to both cotton and viscose yarns with different yarn counts. Therefore, the AAS can potentially be used to reduce yarn hairiness for ring spun yarns and enhance the quality of ring spun yarns in the textile industry.

scholarly journals Study on Fiber Overlap and Fiber Extent in Blended Spun Yarns

2013 ◽  
Vol 8 (1) ◽  
pp. 155892501300800
Author(s):  
Biswa Ranjan Das ◽  
S. M. Ishtiaque ◽  
R. S. Rengasamy
Keyword(s):  
Statistical Analysis ◽  
Structural Parameter ◽  
Significance Level ◽  
Yarn Strength ◽  
Air Jet ◽  
Spun Yarn ◽  
Spun Yarns

This article reports on the analysis of the fiber overlap and fiber extent in ring, rotor, and air-jet spun polyester/viscose blended yarns. The fiber overlap and fiber extent was measured by employing the tracer fiber technique. Statistical analysis was carried out at the 95% significance level with the single tail test to trace out specific trends executed by the spun yarns with any change in their blend proportions. The fiber overlap index and spinning-in-coefficient is correlated with tensile characteristics (static and dynamic) of the spun yarns to explore the most influential structural parameter among them for different applications. This presents study indicates that the prediction of spun yarn performance in post spinning processes is more appropriately modeled based on fiber overlap index over spinning-in-coefficient for ring and air-jet spun yarns, whereas spinning-in-coefficient is more appropriate for rotor spun yarns. For apparel use, spinning-in-coefficient is more appropriate over fiber overlap index for rotor and air-jet yarns to model the spun yarn strength as opposed to fiber overlap index for ring spun yarns.

scholarly journals A Novel Method For The Fibre-Based Conductive Ring Spun Yarn Production

2021 ◽  
Author(s):  
özgü özen ◽  
demet Yılmaz ◽  
Kerim Yapıcı
Keyword(s):  
Production Method ◽  
Single Step ◽  
Wearable Electronics ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Conductive Yarns ◽  
Ring Spun Yarn ◽  
Yarn Production ◽  
Environmentally Friendly Process ◽  
Electronic Textile

Abstract To take the advantages of spun yarns such as porosity, softness, bending as well as usability as yarn/fabric forms, in this study, it was worked on an alternative conductive yarn production method. Different from other methods such as coating, core-spun, blending, a conductive nanosuspension was applied to viscose, cotton and polyester open fibre bundles with different feeding amounts during the ring spinning with a specially developed apparatus. Reduced graphene oxide (rGO) was used to impart conductivity. Different from literature, rGO was synthesized with a single step process instead of two-step processes to ensure simple, easy-to-apply process and industrial applicability. Following to yarn production, winding, knitting and washing processes were realized to evaluate the changes in yarn conductivity and the usability of the yarns in the post-spinning processes. In addition to tensile properties of the yarns and air permeability of the fabrics, electrical resistance and environmental impact of the method was compared with immersion&drying process. The results indicated that alternative method allows the production of conductive (lower resistance than 100 kΩ) but also stronger, flexible, washable and breathable electronic textile products with an environmentally friendly process. There has been no effort, as yet, to get conductivity in this manner. Therefore, the developed method can be considered to be a new application in the functional yarn production field. The produced conductive yarns can be converted into fabric form by weaving, knitting and embroidery. Therefore, they can also be seen as an ideal as the platforms for future wearable electronics.

Comparative Study of Quality Parameters of Knitted Fabric from Air-jet and Ring Spun Yarn

2005 ◽  
Vol 5 (2) ◽  
pp. 277-280 ◽  
Author(s):  
Babar Shahbaz ◽  
Nisar Ahmad Jamil . ◽  
Assad Farooq . ◽  
Faisal Saleem .
Keyword(s):  
Comparative Study ◽  
Quality Parameters ◽  
Knitted Fabric ◽  
Air Jet ◽  
Spun Yarn ◽  
Ring Spun Yarn

Comparative Research of the Sizing Performance of the Compact Spun-Yarn and Ring Spun-Yarn

2012 ◽  
Vol 535-537 ◽  
pp. 1425-1428
Author(s):  
Qin Ma ◽  
Xue Feng Liu
Keyword(s):  
Comparative Research ◽  
Loading Rate ◽  
Percentage Points ◽  
Spun Yarn ◽  
Spun Yarns ◽  
Ring Spun Yarn ◽  
The Cost

The characteristics of the compact spun yarn were introduced, and the problems in the sizing process of compact spun yarns were analyzed. Because of the high size loading of the compact spun yarn, a large number of yarns break and the chubbiness of the fabric were affected. Aiming at the problems above, through sizing experiment and testing of the performance of the yarns, the differences between the compact spun yarn and the conventional ring spun yarn were analyzed. Comparing with the conventional ring spun yarn, the size loading rate of the compact spun yarn was reduced about 1 to 3.5 percentage points under the same equipment conditions and sizing techniques. To obtain the same strength and hairiness sticking effect, the size loading of the compact spun yarn can be 5 to 6 percentage points lower than that of the conventional ring spun yarn. Sizing materials can be saved, and the cost of the sizing process could reduced by 50%.

Fiber Configuration of Air Jet Vortex Spinning Yarns

2013 ◽  
Vol 834-836 ◽  
pp. 1784-1788
Author(s):  
Ya Hong Zhong ◽  
Jian Hui Ma ◽  
Ming Jie Xing
Keyword(s):  
Outer Layer ◽  
Optical Microscope ◽  
Air Jet ◽  
Spun Yarn ◽  
Ring Spun Yarn ◽  
Spinning Process ◽  
Twisted Fiber

In this paper, the spinning process of air jet vortex spinning was described. The structure of air jet vortex spun yarn was studied by means of blending tracer fibers in spinning. Then the yarns were viewed with the optical microscope and SEM etc. The result shows that air jet vortex spun yarn comprises two parts. The outer layer, composed of twisted fibers, presents helical form. And the inner layer contains about 30% fibers untwisted or slackly twisted. The distance between twisted fiber groups is very short, so the borderline isnt obvious. There is a certain angle between core fibers in parallel and the axes of the yarn. The coefficient of fiber migration of the yarn was calculated, and it is lower than that of ring spun yarn and compact spun yarn.

scholarly journals Effect of Blend Ratio on the Quality Characteristics of Recycled Polyester/Cotton Blended Ring Spun Yarn

2017 ◽  
Vol 25 (0) ◽  
pp. 48-52 ◽  
Author(s):  
Thilak Vadicherla ◽  
Dhandapani Saravanan
Keyword(s):  
Linear Density ◽  
Quality Characteristics ◽  
Blend Ratio ◽  
Elongation At Break ◽  
Blended Yarn ◽  
Spun Yarn ◽  
Significant Difference ◽  
Spun Yarns ◽  
Ring Spun Yarn ◽  
End Use

This study investigates the effect of the blend ratio on recycled blended yarn quality characteristics. Ring-spun yarns of linear density of 23.6, 29.5 and 39.4 tex were produced from five blend proportions of recycled polyester and cotton (0:100, 33:67, 50:50, 67:33 and 100:0). Increasing the recycled polyester content increases the tenacity, elongation at break and hairiness and decreases unevenness, thin places, thick places and neps, while a decrease in linear density increases the tenacity, elongation at break, unevenness, thin places, thick places, neps and hairiness. Statistical analysis reflects that both the blend ratio and linear density have a significant difference on the tenacity, elongation at break, thin places, thick places, neps and hairiness. However, with reference to unevenness, a significant difference is reported only for linear density and not for the blend ratio. The ratio of recycled polyester has a significant influence on the overall quality of recycled polyester/cotton blended yarn. The blending of recycled polyester and cotton can be optimised to meet various end-use requirements.

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