Annals of the University of Oradea Fascicle of Textiles, Leatherwork the Influence of Raw Material on the Liquid Moisture Transport Through Knitted Fabric (original) (raw)
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For to adjust the heat, body removes heat. Depending on physical effort, it gives more or less moisture. Moisture removed from the body should be taken from the skin and directed outwards through clothing. This can be due to moisture absorption ability, and because of the capillary effect. This study is a part of a very extensive work on the influence of characteristics and raw materials, knitted structure and density on comfort properties of socks. If a high level of perspiration, moisture liquid, it is important that it be removed as quickly from skin and clothing led outside. From here can evaporate into the environment. This is achieved through the capillary effect of fabrics that may effectively transport moisture. Storage capacity and moisture transfer of a textile depends on the composition and structure. In laboratory conditions, methods for assessing the behavior of textiles against moisture is applied differentially depending on the state humidity: vapor or liquid. With th...
Liquid transfer properties of textile fabrics as a function of moisture content
Chemical Industry
Liquid transport in textile fabrics determines thermal comfort during high physical activity of a person when liquid perspiration is produced and needs to be transferred away from the skin to keep the thermal balance. In this investigation, an attempt was made to get some indications of how the combination of the fabric composition, geometry and dimensional stability, and the moisture content influences liquid transfer properties of plain weft knitted fabrics. Therefore, the knitted fabrics made from pure hydrophilic (hemp fibres), pure hydrophobic (acrylic fibres) and a hydrophilic/hydrophobic (hemp/acrylic) fibre blend underwent a trial wear and care period. The Malden Mills water distribution test was performed for the knitted fabrics with different moisture contents (0-30 %) in order to evaluate the effect on liquid transfer properties. Water transfer ability and water holding capacity of the knitted fabrics were also determined after undergoing the wear trial test. The obtained results were analysed with respect to macro and micro scales of porosity of knitted fabrics. It has been shown that the geometric configuration of the complex porous network in knitted fabrics influenced their liquid transfer properties in the whole moisture content range regardless of the composition. Despite the reconfiguration of the pore system in the knits during the trial period, their liquid transfer properties were still dependent on the pore size and distribution.
Liquid Moisture Management in Knitted Textiles – A Review
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Moisture management can be defined as the controlled movement of water vapour and liquid moisture from the surface of the skin to the atmosphere through a garment worn by a wearer. Liquid moisture management is critical in summer apparel and sports knitwear, where sweat management and evaporative cooling is crucial for maintaining thermo-physiological comfort. This paper reviews some fundamental principles and basic mechanisms involved in liquid moisture management, along with some recent developments in fiber, yarn, knitting and topical finishing for enhancing the moisture management properties of knitted fabrics.
Examining Moisture Management Property of Socks
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Effect of fiber count and knit structure on intra- and inter-yarn transport of liquid water
Textile Research Journal, 2013
The moisture transport in fabrics determines its cooling effect and therefore the wearing comfort during sudorific activities. When liquid sweat is present, the moisture absorption by a fabric is characterized by the in-plane and transplanar wicking. We investigated the effect of fabric structure and fiber count on wicking by X-ray projection images using four different polyester knit structures (rib, eyelet, interlock and modified interlock, all hydrophilic), as well as five rib knits with different fiber counts per yarn (24-192, all quasi-hydrophobic with water contact angles 89 AE 1). Experiments were conducted with two-layer samples of the same fabric exposed to different external pressures. The liquid was transported in recognizable waterfronts, which can be interpreted as distinct intra-yarn and inter-yarn in-plane wicking fronts. For layer-to-layer wicking in hydrophilic samples, pressure-dependent time delays were observed; the delays correlated negatively with the relative void area at the interface, and were shortest for the rib knits. For the quasihydrophobic samples, however, the liquid wicked up to the upper layer without time delays, which was due to the liquid being pressed into the fabric, that is, due to the supply-driven flow. We distinguish this from the supply-limited flow, which is driven by capillary forces. The presented results have implications for the design of clothing systems for sudorific activities.
Impact of raw material, yarn and fabric parameters, and finishing on water vapor resistance
Textile Research Journal, 2013
The objective of this study was to explore a number of technical–technological parameters affecting the water vapor resistance of knitted fabric and clothing, as well as to develop a predictive model that describes the prominent affecting parameters. Thirty-four knitted fabrics were carefully produced and measured on a sweating guarded hotplate and thermal manikin. The study focused on the influence of the following parameters on the transfer of water vapor: type of textile fibers, yarn and knitted fabric parameters, finishing of fabrics (recipes include bleaching, dyeing, and softening), and body activity. The statistical analysis, performed to examine the relationship between observed parameters, indicated medium correlation between water vapor resistance and moisture regain (R = 0.7). Furthermore, the relationship between water vapor resistance and the following knitted fabric parameters is especially prominent: mass per unit area, knitted fabric thickness, and tightness factor (...
Mechanism of Liquid Water Transport in Fabrics ; a Review
2017
Liquid water transportation through textiles plays an important role in comfort properties. Transport mechanism takes place from liquid's first behavior when get in touch with fabric to last behavior when evaporated to atmosphere. Wetting phenomena has been carried out by liquid and air interface with textile materials. Basically wetting is physical interaction of fabric with liquid, air and their surface energies results into wicking. Wicking is unconstrained liquid movement, driven by capillarities. Capillarity deals with the penetration ability of liquid into fine pores of fibre to travel along its walls. Wetting, wicking and capillarity are influential parameters to relate the fluid transport in textile fibrous media. This paper is focused on wetting, contact angle, wicking and capillarity, executes in measuring comfort and liquid moisture transport behavior of fabric.
Improving overall moisture content of friction yarn for its use in foundation garments – part 2
Journal of Textile Engineering & Fashion Technology, 2019
As per the global scenario, physiological comfort is very basic and necessary property of the fabric. The fabrics with higher level of comfort values have a tremendous scope from the point of view of comfort in the garment industry. The comfort has been an inherent feature of the knitted textiles. To further increase the softness in knitted fabric, twistless yarns are used. As compared with that of conventional spun yarns, their strength largely depends on the amount of twist but it has the disadvantage of imparting a harsh feel to the fabric. Once the twistless yarn has been assembled in a fabric structure, the compacting forces created by the fabric structure itself hold the systems together. Hence, it is quite possible to produce a twistless knitted fabric with improved parameters of physiological comfort, which can be beneficial for apparels. An attempt has been made to develop DREF III friction spun yarn after structural modifications with an objective to analyze its feasibility for foundation garment end use by diagnosing its quantified reduction in harshness to develop foundation garments and enhancing its breathability. 1 In 'Overall Moisture Management Content' of foundation garments; one-way transport index% is considered as the sub-function with maximum importance; as sweat or moisture is supposed to be transported from body to climate keeping its minimum conditions for desirability of comfort and handle as constant and prohibition of outer moisture to travel inside. 2-4