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Gupta D.,Indian Institute of Technology Delhi | Kothari V.K.,Indian Institute of Technology Delhi | Jhanji Y.,The Technological Institute of Textiles and science
Indian Journal of Fibre and Textile Research | Year: 2014

Effect of yarn linear density in the inner and outer layer of single jersey plated knits on heat and moisture transport and air permeability of resultant fabrics has been studied. These three factors all together determine the comfort of the wearer. Statistical analysis indicates that thermal resistance of the fabric increases significantly with increase in yarn linear density. Fabrics knitted with finer yarns and higher loop lengths are more permeable to air and water vapor and are found to have lower values of thermal absorptivity, thereby making them more suitable for use during hot and humid conditions. Source


Jhanji Y.,The Technological Institute of Textiles and science | Gupta D.,Indian Institute of Technology Delhi | Kothari V.K.,Indian Institute of Technology Delhi
Indian Journal of Fibre and Textile Research | Year: 2015

The present study aims to investigate the effect of fibre type and yarn linear density on the thermal properties such as thermal resistance, thermal conductivity and thermal absorptivity along with air permeability and moisture vapor transmission rate of single jersey plated fabrics. Plated fabrics with nylon in the next to skin layer seem suitable choice for warm conditions as these fabrics would feel cooler on initial skin contact owing to high thermal absorptivity and are permeable to passage of air and moisture vapor. Fabrics knitted with yarns of high linear density seem unsuitable in warm conditions owing to higher value of thermal resistance and lower values of air permeability and moisture vapor transmission rate. Two way analysis of variance is conducted to test the significance of categorical variables, i.e. fibre type and yarn linear density on dependent variables. All the dependent variables except thermal resistance are found to be affected by the categorical variables at 95% confidence intervals. © 2015 National Institute of Science Communication and Information Resources (NISCAIR). All rights reserved. Source


Jhanji Y.,The Technological Institute of Textiles and science | Gupta D.,Indian Institute of Technology Delhi | Kothari V.K.,Indian Institute of Technology Delhi
Indian Journal of Fibre and Textile Research | Year: 2015

The present study aims at investigating the effect of face yarn linear density and back layer fibre type on the liquid transfer properties and drying behavior of single jersey plated knitted fabrics. Fabrics knitted with coarser yarns exhibit high water absorbency, slow drying capability (characterized by lower water evaporation percentage) and appear to be unsuitable for high activity levels. Polypropylene/cotton fabric is found to be the preferred choice at high activity levels owing to lower water absorption, higher trans planar wicking and higher water evaporation percentage. Plated fabrics with nylon in the next to skin layer show high water absorption, poor trans planar wicking and slow drying capability. Nylon/cotton fabrics are, therefore, found to be ineffective in providing dry microclimate next to skin and may not be suitable at high activity levels. © 2015, National Institute of Science Communication and Information Resources (NISCAIR). All rights reserved. Source


Kothari V.K.,Indian Institute of Technology Delhi | Dhamija S.,The Technological Institute of Textiles and science
Journal of the Textile Institute | Year: 2011

The paper presents the results of the investigations made on 2/1 twill fabrics made from polyester and polyesterblended yarns to appreciate the role of constituent polyester fibre fineness and profiles in deciding their handle, appearance and performance in garment manufacturing operations. Three different polyester fibre profiles, trilobal, scalloped oval and tetrakelion, along with circular were chosen and linear density of circular fibre was varied for this investigation. The objective measurements were performed with Fabric Assurance by Simple Testing (FAST) system for evaluation of handle and tailoring performance by extracting information about deformations (i.e. compression, extensibility, bending and shear) in the fabrics. Fabrics' physical and mechanical parameters were shown to be altered by fibre form (fineness and cross-sectional shapes). Higher fibre denier leads to higher values of all four mechanical characteristics and results in higher formability. The influence of cross-section is very specific. Trilobal and tetrakelion, being stiffer and produce bulky yarn, resulting in stiffer fabrics with higher formability compared to their comparable circular fibre fabrics. Scalloped oval fibres, because of their less bending and torsion rigidities, produce fabric of low rigidity and formability but moderate compressibility and high extensibility. Mixing of polyester and viscose tends to reduce the stiffness (both bending and shear) but improves extensibility and formability. © 2011 The Textile Institute. Source


Khanna S.,The Technological Institute of Textiles and science | Kaur A.,The Technological Institute of Textiles and science
Journal of the Textile Association | Year: 2015

The paper aims at the elucidation of the effect of process variables for button attachment for apparels as Men's attire. A number of sewing threads of variable compositions, hand and machine needles along with button varieties were taken for the study to highlight the impact of hand and machine sewing operations on the performance of button attachment in terms of button pull strength. The modes and work done for button detachment have also been investigated, that is ought to be one of the prime area of concern for the garment technologists to produce quality apparels. © 2015. Journal of the Textile Association. All rights reserved. Source

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