scholarly journals Effect of yarn structure on cover factor in woven fabrics

2018 ◽  
Vol 69 (03) ◽  
pp. 197-201 ◽  
Author(s):  
AHMAD ZUHAIB ◽  
ELDEEB MOAZ ◽  
IQBAL SHOAI ◽  
MAZARI ADNAN AHMED
Keyword(s):  
Packing Density ◽  
Light Transmission ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Warp Yarn ◽  
Cover Factor ◽  
Air Jet ◽  
Yarn Diameter ◽  
Yarn Structure ◽  
Rotor Yarn

This experimental work investigates the effect of yarn structure on cover factor of fabrics at different weft settings by the light transmission method. To analyze the effect, two different types of fabric set have been prepared by using airjet and rotor yarns of the same linear densities in the weft direction and keeping the warp yarn unchanged. For each fabric, weft setting has been changed gradually. Cross-sectional diameter of yarn and its packing density has been analyzed to find out the differences between both yarn structures. The effective yarn diameter and packing density have been found to be almost same for both yarns while the hairiness is found to be higher in airjet yarn as compared to rotor yarn. Yarn cross-section in the fabric has also been analyzed to examine the deformation (flatness) in yarn, which was relatively higher in airjet yarns. At the same weft setting the cover factor (CF) of fabric woven by air jet yarn is found to be higher than fabric woven by rotor jet yarn, and this difference decreases as the weft setting increases in fabric. Correlation analysis results show the relation between the cover factor and weft setting. While analysis of variance results show statistically significant effect of spinning system (airjet and rotor yarn) and weft setting on the cover factor of woven fabric.

scholarly journals Use of Extended Cover Factor Theory in UV Protection of Woven Fabric

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1188
Author(s):  
Klara Kostajnšek ◽  
Krste Dimitrovski
Keyword(s):  
Woven Fabrics ◽  
Uv Protection ◽  
Woven Fabric ◽  
Simplified Model ◽  
Light Penetration ◽  
Protective Properties ◽  
Cover Factor ◽  
Coefficient Of Reflection ◽  
Uv Protective Properties

The paper presents an extension of existed cover factor theory more suitable for the evaluation of light penetration through a net woven fabrics structure. It also introduces a new simplified model of predicting the ultraviolet (UV) protective properties of woven fabrics assuming that the coefficient of reflection (KR), transmission (KT), and absorption (KA) of constitutive yarns are known. Since usually they are not, the procedure of preparation of simulation of proper woven fabric samples without interlacing and with known constructional parameters is also presented. The procedure finishes with a fast and cheap detection of missed coefficient for any type of yarns. There are differences between theoretical and measured results, which are not particularly significant in regard to the purpose and demands of investigation.

Tearing Strength Calculation Model of the Synthetic Leather Base

2010 ◽  
Vol 146-147 ◽  
pp. 546-550
Author(s):  
Cheng Qian
Keyword(s):  
Theoretical Model ◽  
Breaking Strength ◽  
Calculation Model ◽  
Woven Fabrics ◽  
Strength Calculation ◽  
Woven Fabric ◽  
Warp Yarn ◽  
Failure Mechanics ◽  
Synthetic Leather ◽  
Tearing Strength

The synthetic leather base is a composite, with the top and lower layers are nonwovens and the middle is woven fabrics. Firstly, the single rip tearing strength and drawing out resistances of the leather base were tested and tearing failure mechanics were analyzed. Then on the above basis, the single rip tearing strength calculation model of the synthetic leather base was built successfully. From theoretical model, main influencing factors are the weft and warp yarn breaking strength and the density of warp and weft yarns in the woven fabric, and also drawing out resistance of the leather base. Finally, experimental verification was made for the established model, which shows that theoretical values conform to the measured values well.

scholarly journals Development of Models to Predict Tensile Strength of Cotton Woven Fabrics

2011 ◽  
Vol 6 (4) ◽  
pp. 155892501100600 ◽  
Author(s):  
Zulfiqar Ali Malik ◽  
Mumtaz Hasan Malik ◽  
Tanveer Hussain ◽  
Farooq Ahmed Arain
Keyword(s):  
Tensile Strength ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Weft Yarn ◽  
Linear Regression Models ◽  
Warp Yarn ◽  
Yarn Strength ◽  
Fabric Density ◽  
Cotton Yarns ◽  
Fabric Strength

Tensile strength has been accepted as one of the most important performance attributes of woven textiles. In this work, multiple linear regression models are developed by using empirical data for the prediction of woven fabric tensile strength manufactured from cotton yarns. Tensile strength of warp & weft yarns, warp & weft fabric density, and weave design were used as input parameters to determine warp- and weft-way tensile strength of the woven fabrics. The developed models are able to predict the fabric strength with very good accuracy. Warp yarn strength and ends per 25 mm are found to be the most dominant factors influencing fabric strength in warp direction while weft yarn strength and picks per 25 mm are most vital in weft direction.

The Effects of Jacquard Woven Fabric Constructional Parameters and Elastane Yarn on Bending Rigidity

2015 ◽  
Vol 10 (2) ◽  
pp. 155892501501000
Author(s):  
Gülcan Süle
Keyword(s):  
Woven Fabrics ◽  
Experimental Results ◽  
Woven Fabric ◽  
Weft Yarn ◽  
Bending Rigidity ◽  
Warp Yarn ◽  
Weft Direction ◽  
Bending Property ◽  
Yarn Count ◽  
Overall Bending

In this research, the bending property of jacquard woven fabrics and the effects of weft density, weft yarn count, weave, and Lycra inclusion in weft yarn on this property were investigated. Viscose filament warp yarn and polyester and polyester/Lycra weft yarns were used for weaving fabrics, and 4/1 and 7/1 satin weaves with the same jacquard design were used as the ground weave. Experimental results show that the bending rigidities of the fabrics in the warp directions increase as the weft density increases and the weft yarn gets thicker. The bending rigidities of the fabrics woven with a 4/1 satin weave in the warp direction are higher compared to the bending rigidities of the fabrics woven with a 7/1 satin weave in the same direction. Similar to the bending rigidities in the warp direction, as the weft density increases and the weft yarn gets thicker, the bending rigidities of the fabrics in the weft directions increase. When the weft yarn includes Lycra, the bending rigidity values of the fabric decrease in the weft direction. Additionally, similar to the bending rigidity in the warp direction, the jacquard woven fabrics with a 4/1 satin weave have a higher bending rigidity in the weft direction compared to the jacquard woven fabrics with a 7/1 satin weave. It was observed that when the weft density increases, the overall bending rigidities of the fabrics increase. Despite fabrics woven with a polyester/Lycra weft yarn having a thicker weft yarn and heavier weight with the same weft density and weave compared to fabrics woven with a polyester weft yarn, the bending rigidity values in the weft direction have a lower overall fabric bending rigidity.

An investigation of the effects of weave types on surface roughness of woven fabric

2021 ◽  
pp. 004051752110106
Author(s):  
Kura A Beyene ◽  
Degu M Kumelachew
Keyword(s):  
Surface Roughness ◽  
Confidence Interval ◽  
Pairwise Comparison ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Weft Direction ◽  
Air Jet ◽  
Handling Characteristics ◽  
Warp Tension ◽  
Air Jet Loom

The fabrics intended for clothing have more emphasis on their appearance and handling characteristics such as luster, smoothness or roughness, stiffness or limpness, and draping qualities. Nowadays, evaluating fabric touch can be of great interest in the industry to match the quality needs of the consumer and the parameters for the manufacturing process. Throughout this study, the effect of weave types on the surface roughness of cotton woven fabric was investigated and analyzed. Three different weave types namely, plain 1/1, twill 1/3, and sateen 8/3 were investigated. The fabric parameters were 27*20Ne (warp/weft) count of yarn, 38*18 (EPC [Ends per Centimeters]/PPC [Picks per Centimeters]) thread density, and 710 CN/TEX (Cent-newton per Tex) with warp tension was produced by air-jet loom. The findings of this study revealed that the surface roughness values of all the fabrics increased regularly on moving from plain 1/1 weave to sateen 8/3 weave. But, the surface roughness of fabric in the weft direction is higher than in the warp direction. The weave type is statistically significant at a confidence interval of 95% and can effectively be used to describe the surface roughness for both warp and weft direction of woven fabrics. The pairwise comparison reveals that it is statistically significant for weave types in the warp and weft direction of the fabrics. This investigation and analysis of weave types on surface roughness of cotton woven fabrics help textile technologies and manufacturers to consider the weave types during the production of fabrics for different end applications.

Preparation and properties of polyimide air-jet textured yarns and their woven fabrics

2019 ◽  
Vol 90 (13-14) ◽  
pp. 1507-1516
Author(s):  
Shuting Huang ◽  
Lina Sun ◽  
Mengjuan He ◽  
Jingli Tang ◽  
Liqian Huang
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Contact Angle ◽  
Heat Resistance ◽  
Air Permeability ◽  
Woven Fabrics ◽  
Warp Yarn ◽  
Air Jet ◽  
Rough Model ◽  
Fabric Surface

Two kinds of air-textured polyimide yarns with different overfeed ratios (0.5/2 and 8/8) were prepared by air-jet texturing technique, and three kinds of woven fabrics with similar tightness and thickness were produced with the same warp yarn but different weft yarns (polyimide flat yarn and the two air-jet textured polyimide yarns, respectively). The influence of air-jet textured yarn on the wearing properties of the fabrics was explored. The results show that, compared with the fabric containing polyimide flat yarn, the fabrics woven with polyimide air-jet textured yarns possess lower mechanical properties but have better air permeability, moisture permeability, heat resistance and luster. In addition, the smaller contact angle and larger wicking height of polyimide air-jet textured yarn fabrics indicate that the hydrophilicity of polyimide fabrics was improved. The effect of air-jet textured yarn on the hydrophilicity of polyimide fabrics was explained by Wenzel rough model and fabric surface roughness characteristics.

A simulation model of electrical resistance applied in designing conductive woven fabrics – Part II: fast estimated model

2017 ◽  
Vol 88 (11) ◽  
pp. 1308-1318 ◽  
Author(s):  
Yuanfang Zhao ◽  
Li Li
Keyword(s):  
Theoretical Model ◽  
Simulation Model ◽  
Electrical Resistance ◽  
Woven Fabrics ◽  
Previous Model ◽  
Woven Fabric ◽  
P Value ◽  
Maximum Deviation ◽  
Cover Factor ◽  
New Model

Limited researches have been proposed regarding the theoretical model of conductive woven fabric. In a previous study, one type of simulation model was derived to compute the resistance of conductive woven fabric. This paper proposed another fast estimated method to obtain the electrical resistance of conductive thermal woven fabrics (CTWFs) based on the previous model but design oriented. This new model has a similar predicted effect, for which the maximum deviation is less than 1.2% compared to the previous one. The cover factor was a major factor in this model, which assists designers to comprehend and manage the method rapidly. The results revealed that the proposed fast estimated model was well fitted ( P-value < 0.05) and could well simulate the electrical resistance of CTWFs within a certain error variation. According to this model, designers can independently estimate the electrical resistance and design customized products of CTWFs, which will be produced effectively by reducing extra waste of energy and cost.

Effects of weft count and weft density on the surface roughness of 3/1 (Z) twill woven fabric

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kura Alemayehu Beyene ◽  
Wassie Mengie ◽  
Chirato Godana Korra
Keyword(s):  
Surface Roughness ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Weft Yarn ◽  
Content Type ◽  
Yarn Diameter ◽  
Technical Textiles ◽  
Textile Technology ◽  
Two Factors ◽  
Technology Industries

Purpose The purpose of this study is to investigate the effects of weft yarn diameter and pick density on the properties of surface roughness (SMD) of 3/1 (Z) twill-woven fabrics in three measurement directions weft (0°), the warp (90°) and the diagonal (45°). Design/methodology/approach Nine 3/1 (Z) twill samples were prepared with two factors and three levels and their roughness values were measured in the weft (0°), warp (90°) and diagonal (45°) directions of 3/1 (Z) twill fabrics using the Kawabata-FB4 instrument. Analysis of variance (ANOVA) is used to determine the effect of weft yarn diameter and pick density on SMD properties and comparisons were done in the weft (0°), the warp (90°) and the diagonal (45°) directions. Findings From experimental analysis, weft yarn diameter and pick density affect SMD of 3/1 (Z) twill-woven fabrics in both diagonal (45°) and weft (0°) directions but slightly affect warp (90°) direction. Maximum SMD values were observed in diagonal (45°) directions and the minimum was in warp (90°) directions of fabrics. Weft yarn diameter and pick density are statistically significant on SMD values of 3/1 (Z) twill-woven fabrics for three directions at a 95% confidence interval. Parameter variation in weft directions of 3/1 (Z) twill-woven fabrics also varies SMD values in three directions measurements Originality/value The findings of this study can be usually used for textile technology, industries and laboratories to create a basic understanding for measuring roughness properties of 3/1 (Z) twill fabric. It is also possible to identify the surface characterizations in different directions of measurement for their usage in some specific areas of end application like consumer goods, home textiles, technical textiles, etc.

scholarly journals Water Repellency/Proof/Vapor Permeability Characteristics of Coated and Laminated Breathable Fabrics for Outdoor Clothing

Coatings ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 12
Author(s):  
Hyun-Ah Kim
Keyword(s):  
Surface Modification ◽  
Structural Parameters ◽  
Water Vapor Permeability ◽  
Water Repellency ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Unit Weight ◽  
Vapor Permeability ◽  
Cover Factor ◽  
Permeability Characteristics

This study examined the water repellency (WR), waterproof, and water vapor permeability (WVP) characteristics of twelve types of laminated and coated woven fabrics for outdoor clothing. These characteristics were compared with the fabric structural parameters, such as cover factor, thickness, and weight, and surface modification (finishing) factors, such as coating, laminating, and Teflon treatments. In addition, an eco-friendly process for surface modification was proposed followed by a summary. Superior waterproof-breathable characteristics with 100% water-repellency were achieved in specimen 3 in group A by treatment with a hydrophilic laminated finish using nylon woven fabric with a cover factor between 0.7 and 0.9 in a 2.5-layered fabric, which was the best specimen with waterproof-breathable characteristics. A high WVP in the coated and laminated fabrics was observed in the fabrics with a low weave density coefficient (WDC) and low thickness per unit weight of the fabric, whereas superior water repellency and waterproof characteristics were observed in the high-cover-factor (WDC) fabric with appropriate fabric thickness. The determination coefficient (R2) from regression analysis between the WVP and fabric structural parameters indicated a higher contribution of the fabric structural parameters than surface modification factors, such as coating and laminating to the WVP in the coated and laminated fabrics. Furthermore, the cover factor was the most important factor influencing the WVP of the waterproof-breathable fabrics. Of twelve coated and laminated fabrics, the laminated nylon and nylon/cotton composite fabrics showed superior WVP with high WR and waterproof characteristics. Accordingly, based on the WR, waterproof, and WVP characteristics of the coated and laminated breathable fabrics, the laminating method, as an eco-friendly process, is recommended to obtain better waterproof-breathable fabrics.

scholarly journals TENUN ENDEK MASTULI DI DESA KALIANGET, KECAMATAN SERIRIT, KABUPATEN BULELENG

2017 ◽  
Vol 7 (2) ◽  
pp. 77
Author(s):  
Gede Wijana . ◽  
Dr. Drs. I Nyoman Sila, M.Hum. . ◽  
Dra. Luh Suartini, M.Pd. .
Keyword(s):  
Qualitative Research ◽  
Acetic Acid ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Synthetic Dyes ◽  
Warp Yarn ◽  
Decorative Motifs ◽  
Materials Used ◽  
The Way ◽  
Descriptive Qualitative

Penelitian ini adalah penelitian deskriptif kualitatif, bertujuan untuk mendeskripsikan (1) alat dan bahan yang digunakan dalam proses pembuatan kain tenun endek mastuli di desa Kalianget, kecamatan Seririt, kabupaten Buleleng, (2) cara pembuatan kain tenun endek mastuli di desa Kalianget, kecamatan Seririt, kabupaten Buleleng, (3) jenis-jenis motif yang terdapat pada kain tenun endek mastuli di desa Kalianget, kecamatan Seririt, kabupaten Buleleng. Hasil penelitian menunjukkan (1) alat yang digunakan dalam proses pembuatan kain tenun endek mastuli di desa Kalinget adalah ATBM (Alat Tenun Bukan Mesin), pengeliingan (undar dan pengeretekan), palet, pencatrian, penamplikan, gegirik, pemapalan, pengeboman, penyucukan, meteran, dan gunting. Sedangkan bahan yang digunakan adalah benang mastuli (sutera), pewarna sintetis basa (basis dye), dan asam cuka (acitec acid). (2) proses pembuatan kain tenun endek mastuli di desa Kalianget terdiri dari, pewarnaan benang lungsin, ngebom, nyucuk, ngeliing benang pakan, mebed, pewarnaan benang pakan, nyatri, mapal, ngeliing pakan siap tenun, dan menenun. (3) jenis-jenis motif hias yang terdapat pada kain tenun endek mastuli di desa Kalianget adalah keplok/ceplok, keplok/ceplok kurung, dobol, dobol endek, pelangi, penyu, cegcegan, pot sungenge, dan pinggiran. Kata Kunci : tenun endek, mastuli, motif hias. This research is descriptive qualitative research. The purpose of this study is to describe (1) the tools and materials used in the process of making endek mastuli weave in Kalianget village, Seririt sub-district, Buleleng regency, (2) the way of making woven endek mastuli in Kalianget village, Buleleng regency, (3) the types of motifs that are found in the woven fabric of endek mastuli in Kalianget village, Seririt sub-district, Buleleng regency. The results of this study showed that (1) the tools used in the process of making woven fabric endek mastuli in Kalianget village are ATBM (traditional tool for weave), pengeliingan (undar and pengeretekan), palet, pencatrian, penamplikan, gegirik, pemapalan, pengeboman, penyucukan, gauge and cutter. While the materials used are yarn mastuli (silk), synthetic dyes base (basis dye), and acetic acid. (2) the process of making woven fabrics endek mastuli in Kalianget village consists of dyeing of warp yarn, ngebom, nyucuk, ngeliing yarn, roll up (mebed), coloring yarn feed, nyatri, mapal, ngeliing weft ready feed, and weave. (3) the types of decorative motifs that are found in the woven fabric of endek mastuli in Kalianget village are keplok/ceplok, keplok/ceplok kurung, dobol, dobol endek, pelangi, penyu, cegcegan, pot sungenge, and pinggiran. keyword : weaving endek, mastuli, decorative motif.

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