scholarly journals Impact of Machine Parameters on Knit Fabric GSM and Shrinkage

2019 ◽  
Vol 4 (9) ◽  
pp. 89-92
Author(s):  
Mohammad Mohsin Ul Hoque ◽  
Md. Anisuzzaman Rassel
Keyword(s):  
Thickness Variation ◽  
Knitted Fabrics ◽  
Dimensional Changes ◽  
Fabric Thickness ◽  
Yarn Diameter ◽  
Length Estimation ◽  
Yarn Count ◽  
Stitch Length ◽  
Finer Yarn ◽  
Shrinkage Behavior

Knitted fabrics have a tendency to undergo some dimensional changes and GSM variation due to different knitting parameters. The investigation was carried out to relate the effect of different yarn counts, stitch lengths, machine gauge on fabric thickness variation and shrinkage behavior of the fabric. In this study the experimental results showed that fabric GSM varies as machine gauge changes by using same yarn count. On the contrary, when machine gauge and yarn count was fixed, the changes of fabric GSM was very negligible. For finer yarn count with different machine gauge GSM variation is more compared to coarser yarn count. But with same machine gauge GSM was very closer for both of finer and coarser yarn count. Fabric shrinkage both in lengthwise and widthwise is more fore finer yarn count than coarser yarn count. This study supports that, selection yarn count and calculation of stitch length was not only the way to meet buyer requirements regarding fabric thickness and shrinkage properties. The results found from this work will guide the determination to pick up right machine gauge, management of correct yarn diameter along with meticulous stitch length estimation.

scholarly journals Evaluation of Impact of Yarn Count and Stitch Length on Pilling, Abrasion, Shrinkage and Tightness Factor of 1 ? 1 Rib Cotton Knitted Fabrics

2018 ◽  
Vol 08 (05) ◽  
Author(s):  
Md. Nura Alam Shiddique ◽  
Md. Reazuddin Repon ◽  
Rajib Al Mamun ◽  
Debasree Paul ◽  
Nasrin Akter ◽  
...  
Keyword(s):  
Knitted Fabrics ◽  
Yarn Count ◽  
Stitch Length

Analyzing the Effect of Fiber, Yarn and Fabric Variables on Bagging Behavior of Single Jersey Weft Knitted Fabrics

2013 ◽  
Vol 8 (3) ◽  
pp. 155892501300800 ◽  
Author(s):  
Mitra Karimian ◽  
Hossein Hasani ◽  
Saeed Ajeli
Keyword(s):  
Optimum Process ◽  
Process Conditions ◽  
Knitted Fabrics ◽  
Yarn Twist ◽  
Fabric Density ◽  
Fabric Structure ◽  
Controllable Factors ◽  
Yarn Count ◽  
The Individual ◽  
Single Jersey

This research investigates the effect of fiber, yarn and fabric variables on the bagging behavior of single jersey weft knitted fabrics interpreted in terms of bagging fatigue percentage. In order to estimate the optimum process conditions and to examine the individual effects of each controllable factor on a particular response, Taguchi's experimental design was used. The controllable factors considered in this research are blending ratio, yarn twist and count, fabric structure and fabric density. The findings show that fabric structure has the largest effect on the fabric bagging. Factor yarn twist is second and is followed by fabric density, blend ratio and yarn count. The optimum conditions to achieve the least bagging fatigue ratio were determined.

scholarly journals On the Pressure Behavior of Tubular Weft Knitted Fabrics Constructed from Textured Polyester Yarns

2011 ◽  
Vol 6 (2) ◽  
pp. 155892501100600 ◽  
Author(s):  
Homa Maleki ◽  
Marzie Aghajani ◽  
A.H. Sadeghi ◽  
Ali Asghar Asgharian Jeddi
Keyword(s):  
Pressure Reduction ◽  
Knitted Fabrics ◽  
Factors Affecting ◽  
Pressure Behavior ◽  
Interfacial Pressure ◽  
Stitch Length ◽  
Laplace’S Law ◽  
Experimental Pressure ◽  
Theoretical Results ◽  
Laplace's Law

This study attempts to investigate the pressure behavior of tubular knitted fabrics after a long period of time. For this purpose, two kinds of knitted fabric (plain and interlock) with various stitch lengths were chosen and the interfacial pressure and pressure reduction of fabrics after 48 hours were analyzed at different strain percents. The same tests were performed on the same specimens after repeated washing and repeated usage. Finally, the experimental pressure values were compared with the theoretical results obtained from Laplace's law. The results reveal that the stitch length and strain percent are important factors affecting the interfacial pressure and pressure reduction of both plain and interlock fabrics. As the results of statistical analysis, the repeated washing and repeated usage have significant effect on interfacial pressure and pressure reduction of both fabrics. The comparison between experimental pressure values and theoretical values calculated from Laplace's law shows a considerable difference in both plain and interlock fabrics.

scholarly journals A Study of the Consumption of Sewing Threads for Women's Underwear: Bras and Panties

2020 ◽  
Vol 20 (3) ◽  
pp. 299-311
Author(s):  
Brahem Mariem ◽  
Messaoudi Wissal ◽  
Khedher Faouzi ◽  
Jaouachi Boubaker ◽  
Dominique Adolphe
Keyword(s):  
Linear Regression ◽  
Regression Method ◽  
Linear Regression Method ◽  
Knitted Fabrics ◽  
Fabric Thickness ◽  
Sewing Thread ◽  
Consumption Values ◽  
Stitch Density ◽  
Sewing Threads ◽  
Influential Parameters

AbstractThe article evaluates the amount of the consumed sewing thread for women's underwear (underwear bras and panties). Based on the obtained findings, it was concluded that sewing thread amount depends enormously on the studied influential parameters. The present paper reports a contribution that allows industries and researchers to decrease the consumed amounts of sewing thread in case of women's underwear and panties The study takes into account the different stitch structures and fabric characteristics that are usually used. The effects of influential input parameters, such as fabric thickness, number of assembled layers, stitch density, and tension of the thread, are investigated. Useful models have been found and can be used by industries to accuracy predict the thread consumption for women's underwear and panties to launch the needed thread commands. The developed models use multiregressive method. In this study, the fabrics that have been considered are knitted fabrics because they are those used in women's underwear. We found that women's underwear bras consume more sewing threads than panties. Using linear regression method, good relationships (coefficients of correlation close to 1) between consumption behaviors and the investigated parameters such as fabric thickness, number of assembled layers, stitch number per centimeter, sizes and tension of threads, were found. Although, the increase of threads tension to sew female underwear decreases the consumed amount of threads, the increase of other studied parameters widely encourages the consumption values, especially for seams based on chain-stitch types.

Variation of Poisson’s ratio of fabrics woven with helical composite auxetic weft yarns in relation to fabric structural parameters

2019 ◽  
Vol 50 (2) ◽  
pp. 149-169
Author(s):  
Asal Lolaki ◽  
Mohsen Shanbeh
Keyword(s):  
Poisson’S Ratio ◽  
Structural Parameters ◽  
Processing Technique ◽  
Poisson's Ratio ◽  
Image Processing Technique ◽  
Weft Yarn ◽  
Warp Yarn ◽  
Dimensional Changes ◽  
Weft Direction ◽  
Yarn Count

Auxetic textiles are defined as textiles with negative Poisson’s ratio. These textiles possess unique properties that render them suitable for special applications. This work aims to investigate the effect of fabric structural parameters such as thread densities, weave design and warp yarn count. Thus, 30 fabric samples were woven at 3 weft and 2 warp densities, respectively. Two warp counts and three weave designs of plain, basket 3/3 and weft-backed satin 6 were used. The samples were uniaxially loaded in weft direction and dimensional changes at various strains levels were evaluated. The evaluation was carried out using the image processing technique based on MATLAB software. The weft yarns used were found to exhibit auxetic behavior at the whole spectrum of the strain level used. The least weft yarn Poisson’s ratio was found to be −0.9. It was established that in general the fabric samples exhibit auxetic effect within the stated range of strain. Additionally, it was concluded that while fabric thread densities together with warp count influence the minimum fabric Poisson's ratio, auxetic behavior of the samples is not dependent on weave design alone. Rather, it was illustrated that the combined effect of weave design in association with stated structural parameters on auxetic feature cannot be ignored.

scholarly journals Theoretical and Experimental Estimation of the Stored Energy of Plain Knitted Fabrics Using Yarn Pullout Test

2012 ◽  
Vol 7 (1) ◽  
pp. 155892501200700 ◽  
Author(s):  
Azita Asayesh ◽  
Elaheh Niazkhani ◽  
Ali Asghar Asgharian Jeddi
Keyword(s):  
Pullout Test ◽  
Polyester Fabric ◽  
Force Balance ◽  
Stored Energy ◽  
Knitted Fabrics ◽  
Pull Out ◽  
Plain Knitted Fabric ◽  
Stitch Length ◽  
Balance Analysis ◽  
Reasonable Prediction

The yarn pullout test is a suitable method for investigating the internal mechanical properties of the fabric structure which is established during the weaving or knitting process. In this study, a theoretical model is presented to estimate the stored energy of plain-knitted fabrics which is determined using yarn pullout. The model can predict the stored energy in the fabric, based on the fabric dimensional properties of stitch length and yarn contact angle using force balance analysis. Moreover, in order to evaluate the suggested model, three types of plain-knitted fabric from cotton, cotton/polyester and cotton/nylon with three different stitch lengths were produced and subjected to pull-out tests. Comparison between experimental and theoretical results, demonstrates a reasonable prediction. The results show that the cotton/polyester fabric has the maximum stored energy, because of its higher yarn to yarn friction coefficient. It was also found that, the increase in fabric's loop length leads to a decrease in the fabric's stored energy.

scholarly journals Influence of Knitting Process Parameters on the Thermal Comfort Properties of Eri Silk Knitted Fabrics

2018 ◽  
Vol 26 (5(131)) ◽  
pp. 47-53 ◽  
Author(s):  
Balakrshnan Senthil Kumar ◽  
Thangavelu Ramachandran
Keyword(s):  
Thermal Properties ◽  
Thermal Comfort ◽  
Process Parameters ◽  
Loop Length ◽  
Knitted Fabrics ◽  
Vertical Wicking ◽  
Yarn Count ◽  
Thermal Comfort Properties ◽  
Fabric Structures ◽  
Eri Silk

Eri silk, a wild silk variety available in the northeastern states of India, has better softness, tensile and thermal properties. The present study aimed to develop different knitted structures and investigate the influence of knitting process variables on the thermal comfort and wicking properties. Knitted single jersey and single pique fabric structures were produced with two sets of yarns – 25 tex and 14.32 tex with three levels of loop length. Thermal properties of the fabric were analysed using an Alambeta instrument, and the wicking ability was measured with an vertical wicking tester. Thermal comfort properties of eri silk were also compared with those of conventional mulberry silk, with the experiment result revealing that eri silk has better comfort values. A statistically significant correlation is found between knitting process parameters viz. the yarn count, loop length knitting structure and the thermal and wickability values of the fabrics.

scholarly journals Effect of Lycra Weight Percent and Loop Length on Thermo-physiological Properties of Elastic Single Jersey Knitted Fabric

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Amany Khalil ◽  
Pavla Těšinová ◽  
Abdelhamid R.R. Aboalasaad
Keyword(s):  
Thermal Conductivity ◽  
Water Vapor ◽  
Weight Percent ◽  
Vapor Permeability ◽  
Knitted Fabric ◽  
Loop Length ◽  
Geometrical Properties ◽  
Fabric Thickness ◽  
Yarn Diameter ◽  
Single Jersey

Abstract The aim of this work is to estimate the effect of loop length and Lycra weight percent (Lwp) on the geometrical and thermo-physiological comfort of elastic plain knitted fabric. Fifty single jersey knitted fabric samples were produced at five levels of Lycra weight percent (Lwp) (4%, 5%, 6%, 7%, and 8%) and loop length (2.7 mm, 2.9 mm, 3.1 mm, 3.3 mm, and 3.4 mm) with full plaited (fp) and half plaited (hp) of bare Lycra. The thermo-physiological comfort properties (thermal conductivity, absorptivity, and water vapor permeability), air permeability, and geometrical properties were measured at standard of each one. The results showed that the elastic single jersey knitted fabric thickness ranged between 3.12 times and 4.2 times of the yarn diameter (d). The fabric thickness increased when loop length is increased and decreased when Lwp is increased. The thermal conductivity, absorptivity, and water vapor resistance (WVR) decreased with Lwp increasing.

scholarly journals Performance of Oak Tasar Silk Waste/ Viscose Blended Knitted Fabrics through Kawabata Evaluation System (KES) for Apparel use

2021 ◽  
pp. 23-36
Author(s):  
. Pooja ◽  
Sandeep Bains
Keyword(s):  
Evaluation System ◽  
Tactile Sense ◽  
Knitted Fabrics ◽  
Aesthetic Appearance ◽  
Novel Approach ◽  
Yarn Count ◽  
Potential Applications ◽  
Sensory Responses ◽  
Fabric Surface ◽  
Sense Of Touch

Tactile sense or the sense of touch has been an important aspect of the human interactions with the environment. The study of tactile sense, or the haptics, has received tremendous attentions for its potential applications. This paper introduces a novel approach for evaluating fabric sensory responses. Attempt has been made to objectively assess the oak tasar silk waste/ viscose blended knitted fabrics of two different yarn counts in order to obtain the scores on various parameters of hand. The Kawabata Evaluation System (KES) used five highly sensitive instruments that measure fabric bending, shearing, tensile and compressive stiffness, as well as the smoothness and frictional properties of a fabric surface. The instrument also gave direct value of primary hand value and total value of the fabric. It the findings of the research revealed that, 40%OTW:60%viscose blended fabric of 15 Nm yarn count depicted best results for smoothness, uniformity, tactile sensation, aesthetic appearance and total hand value.

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