Shear Properties of Wool Plain-Knitted Fabrics

1976 ◽  
Vol 46 (4) ◽  
pp. 265-272 ◽  
Author(s):  
R. J. Hamilton ◽  
R. Postle
Keyword(s):  
Shear Force ◽  
Hysteresis Loops ◽  
Shear Behaviour ◽  
Knitted Fabric ◽  
Shear Rigidity ◽  
Knitted Fabrics ◽  
Fabric Structure ◽  
Applied Tension ◽  
Constant Tension ◽  
Applied Relaxation

An instrument is described for the measurement of shear in knitted fabrics under conditions of constant tension and “equal length of side.” Shear hysteresis loops were obtained for a series of wool plain-knitted fabrics of different tightness factors. Typical curves and fabric parameters (shear rigidity and coercive shear force) are presented for the fabrics tested in two states of relaxation using several values of applied tension. The results have been analyzed statistically and a simple friction-elastic rheological model of the shear behaviour is examined. This model is interpreted in terms of the knitted fabric structure and the changes that occur when a shear deformation is applied. Relaxation was found to reduce the values of both the shear rigidity and the coercive shear force. The effect of tension was investigated, and suitable levels of tension are recommended for testing knitted fabrics in shear.

Investigation of the Two-Bar Warp-Knitted Fabric Structure Effect on Luster Value

2014 ◽  
Vol 9 (2) ◽  
pp. 155892501400900
Author(s):  
Saeed Ajeli ◽  
Zoleykhah Ahmadvand
Keyword(s):  
Diffuse Reflection ◽  
Specular Reflection ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Fabric Structure ◽  
Measuring Surface ◽  
Before And After ◽  
Dark Color ◽  
Points Of View ◽  
Warp Knitted Fabric

Consumer points of view determine economical value of fabrics. Fabric luster plays a momentous role in attracting people's attention, especially for clothing and domestic purposes. Luster is defined by intensity of both specular and diffuse light reflection off of a surface. There are various methods for measuring surface luster. Gloss. Luster is described as the ratio of specular reflection in one angle to diffuse reflection in another angle. Two-bar warp knitted polyester fabrics such as Tricot, Locknit, Satin, reverse Locknit and Sharkskin in three different densities were provided. A mini gloss apparatus was applied to measure fabric specular reflection in the angle of sixty degrees, before and after disperse dying with different colors of white, blue and yellow. Results suggest that luster is a function of knitted fabric type, color and density. Enhancement of technical back luster resulted from longer underlap of the front bar. However, it did not change the technical face luster significantly. Density increased in all knitted fabrics and caused the luster to decrease. Dark color fabrics showed lower luster compared to light ones.

scholarly journals The Effect of Number and Position of Tuck Stitches within the Pattern Repeat on Air Permeability of Weft-knitted Fabrics from Glass Yarn

2019 ◽  
Vol 2 (3) ◽  
pp. 317-323
Author(s):  
Mehmet Erdem İnce
Keyword(s):  
Mechanical Properties ◽  
High Performance ◽  
Physical And Mechanical Properties ◽  
Air Permeability ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Synthetic Fibers ◽  
Fabric Structure ◽  
Knit Fabrics ◽  
Weft Knitted Fabric

The fact that weft knitted fabrics has a stretchable, 3D, porous and interlocking structure makes them unique when manufactured from high performance fibers. Knitted fabrics with different architectures exhibit different properties. Different loop forms like tuck and skip stitches with various loop lengths reveal different physical and mechanical properties. Literature review indicated that wisely arrangement of tuck stitches within the pattern repeat alter the weft-knitted fabric structure from natural and synthetic fibers. Therefore, we studied the effect of number and location of tuck stiches on air permeability of weft-knitted fabrics from glass yarn. Single-bed, flat weft knitting machine was used to knit fabrics with different architectures from three-ply glass yarn. The nominal single-end count of used E-glass yarn was 136 tex. It is anticipated that the number and location of tuck stitches within knit pattern effect physical and air permeability properties of weft-knitted fabrics from glass yarn.

Study on Wearing Characteristics of Sorona/Cotton Blended Seamless Knitted Fabric

2014 ◽  
Vol 633-634 ◽  
pp. 460-463
Author(s):  
Zi Min Jin ◽  
Xin Li ◽  
Yu Xiu Yan ◽  
Jian Wei Tao
Keyword(s):  
Air Permeability ◽  
Fiber Content ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Breaking Elongation ◽  
Fabric Structure

This document mainly studied the effect of Sorona fiber content and fabric structure on the wearingcharacteristicsofSoronacottonblendedseamlessknittedfabric. In the experiment, three different kinds of stitch structures and ratios of Sorona/cotton were designed and nine Sorona/cotton blended seamless knitted fabrics were knitted. And then, breaking elongation, rigid flexible, crease recovery, pilling resistance, hygroscopicity and air permeability of the nine seamless knitted fabrics were tested and analyzed. The result showed that with the increasing of Sorona fiber content, the properties of Breaking elongation, rigid flexible, crease recovery and pilling resistance of the Sorona/cotton blended seamless knitted fabrics had and a certain of improvement, however the hygroscopicity and air permeability decreased.

Study on the Knitting Process and Temperature Adjusting Performance of Outlast Fiber in Special Parts of Seamless Coat

2013 ◽  
Vol 821-822 ◽  
pp. 211-214
Author(s):  
Zi Min Jin ◽  
Xin Li ◽  
Jian Wei Tao ◽  
Yu Xiu Yan
Keyword(s):  
Ambient Temperature ◽  
Experimental Results ◽  
Upper Body ◽  
Effect Of Temperature ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
True Effect ◽  
Fabric Structure ◽  
Effects Of Temperature

This paper mainly studies the influence of fabric structure and the content of Outlast fiber on the effects of temperature adjusting performance of seamless temperature-regulating knitted fabric. The experiment knitted 9 seamless temperature-regulating knitted fabrics with three kinds of structures and ratios of Outlast/viscose and tested the true effect of temperature adjusting of them on four parts of upper body when ambient temperature suddenly changed by using the sweating fabric manikinwater. The experimental results show that it will improve the comprehensive temperature adjusting property of the seamless temperature-regulating knitted garment , if its structure separately in bosom, abdomen, dorsum and arm is respectively weft plain, 3+1 rib, pile stitch and weft plain containing 25%,50%,50% and 25% amount of Outlast fiber respectively.

scholarly journals The effect of raw material combination, yarn count, fabric structure and looplength on the thermal properties of Eri silk bi-layer knitted fabrics

2021 ◽  
Vol 72 (03) ◽  
pp. 331-339
Author(s):  
SATHISH T. KUMAR ◽  
RAMESH M. KUMAR ◽  
SENTHIL B. KUMAR
Keyword(s):  
Raw Material ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
The North ◽  
Fabric Structure ◽  
North Eastern ◽  
Yarn Count ◽  
Comfort Property ◽  
Eri Silk ◽  
Silk Yarn

Eri silk is one of the wild silk varieties which are mainly available in the north-eastern areas of India. It exhibits goodmechanical and thermal resistance properties. In this concern, the present study focused to develop a bi-layer knittedstructure made from Eri silk yarn as one side(next to skin) and on another side bamboo yarn knitted fabric. Similarly,Tencel knitted fabric was used instead of bamboo. Twenty-four bi-layer knitted fabrics were developed and thenanalysed for its thermal comfort property. The air permeability, and wick-ability were found to be higher and the thermalresistance was found to be higher for bi-layer plated interlocked knitted fabric made out of Eri silk compared to bambooand Tencel.

scholarly journals The Effect of Softeners Applications on Moisture Management Properties of Polyester/Cotton Blended Sandwich Weft-Knitted Fabric Structure

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 575
Author(s):  
Amna Siddique ◽  
Tufail Hassan ◽  
Sharjeel Abid ◽  
Munir Ashraf ◽  
Azmat Hussain ◽  
...  
Keyword(s):  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Drying Time ◽  
Moisture Management ◽  
Fabric Structure ◽  
Management Capability ◽  
Weft Knitted Fabric ◽  
Performance Results ◽  
Fabric Comfort ◽  
Concentration Levels

Prolonged drying times of terry fabrics is a problem as they can not be re-used until completely dry. To resolve this issue, we have designed a sandwich polyester in the mid-layer with low moisture content that could reduce the drying time with excellent wicking properties. These fabrics are widely used as activewear and sportswear. The effect of different softeners on the moisture management properties of weft-knitted terry fabrics’ for various applications has also been studied. Terry knitted fabrics were prepared using a circular knitting machine. Six different softeners were applied with three different concentrations, i.e., 10 g/L, 15 g/L, and 20 g/L, on the fabric using the pad-dry-cure method. Moisture management tests and rubbing fastness tests were performed to analyze the applied softener’s effect on the fabric comfort and moisture management performance. Results revealed that softener type (i.e., cationic, anionic, and non-ionic) and concentration levels considerably affect the moisture management capability of terry knitted fabrics.

scholarly journals The Effect of Knitting Parameter and Finishing on Elastic Property of PET/PBT Warp Knitted Fabric

2017 ◽  
Vol 17 (4) ◽  
pp. 350-360 ◽  
Author(s):  
Qing Chen ◽  
Pibo Ma ◽  
Haiwen Mao ◽  
Xuhong Miao ◽  
Gaoming Jiang
Keyword(s):  
Elastic Property ◽  
Elastic Recovery ◽  
Knitted Fabric ◽  
Polybutylene Terephthalate ◽  
Knitted Fabrics ◽  
Heat Setting ◽  
Fabric Structure ◽  
Warp Knitted Fabric ◽  
The Relationship ◽  
Temperature Time

Abstract This study investigated the elastic elongation and elastic recovery of the elastic warp knittedfabric made of PET( polyethylene terephthalate) and PBT(polybutylene terephthalate) filament. Using 50/24F PET and 50D/24F PBT in two threadingbars, the tricot, locknit and satin warp knitted fabrics were produced on the E28 tricot warpknitting machine. The knitting parameters influencing the elastic elongation under 100N wereanalyzed in terms of fabric structure, yarn run-in speed and drawing density set on machine.Besides, dyeing temperature and heat setting temperature/time were also examined in order toretain proper elastic elongation and elastic recovery. The relationship between elastic elongationand knitting parameter and finishing parameter were analyzed. Finally, the elastic recovery ofPET/PBT warp knitted fabric was examined to demonstrate the elastic property of final finishedfabric. This study could help us to further exploit the use of PET/PBT warp knitted fabric in thedevelopment of elastic garment in future.

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