Influence of Dry Cleaning on the Electrical Resistance of Screen Printed Conductors on Textiles
1Department of Textiles Ghent University, Technologiepark 907, 9052 Zwijnaarde, Belgium
2Polytechnic University of Tirana, Department of Textile and Fashion, Square ‘Mother Teresa’, No.4, Tirana, Albania
3Department of Electronics and Information Systems, Ghent University, Sint Pietersnieuwstraat 41, 9000 Ghent, Belgium
4Department of Microelectronics and Computer Science, Technical University of Lodz, 221/223 Wolczanska St., Lodz, Poland
Citation Information: Autex Research Journal. Volume 16, Issue 3, Pages 146–153, ISSN (Online) 2300-0929, DOI: 10.1515/aut-2015-0019, August 2016
Electrically conducting inks were screen printed on various textile substrates. The samples were dry cleaned with the usual chemicals in order to investigate the influence of the mechanical treatment on the electrical conductivity. It was found that dry cleaning has a tremendous influence on this electrical conductivity. For several samples, it is observed that the electrical resistance increases with the square of the number of dry cleaning cycles. In order to explain this observation a theoretical model and a numerical simulation have been carried out, by assuming that dry cleaning cycles introduce a crack in the conducting layer. The theoretical analysis and the numerical analysis both confirmed the experimental observations.
Investigation into the UV-Protection of Woven Fabrics Composed of Metallic Weft Yarns
1Department of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
Citation Information: Autex Research Journal. Volume 16, Issue 3, Pages 154–159, ISSN (Online) 2300-0929, DOI: 10.1515/aut-2015-0021, August 2016
The destructive effects of sun UV radiation on human skins are now very clear to everyone. Most of the present studies were focused on the fabrics’ structural parameters such as density, warp and weft yarns finenesses, fabric pattern and printing or finishing treatments applied to the fabrics. The aim of this work is achieving a technique through which the produced fabrics possess a higher UV-protection ability. For this purpose, two different metals including aluminium and copper yarns were employed in fabrics production process and their effects on UV-protection ability of the produced fabrics were investigated. Six different fabric samples comprised of either cotton/polyester, nylon yarns as the warp yarns as well as either aluminium or copper yarns as the weft yarns were produced. Using the spectrophotometer technique, which is known as one of the UPF measuring method, the absorbency and reflectivity of fabrics within the specified range of electromagnetic waves (specially the UV radiation) were determined. The results illustrated that the higher UV absorbency was related to the fabric possessing the copper yarns in their structures. It was concluded that the absorption ability of nylon fabrics is higher than that of the cotton/polyester samples.
Modelling the Effect of Weave Structure and Fabric Thread Density on Mechanical and Comfort Properties of Woven Fabrics
1Weaving Department, National Textile University, Sheikhupura Road, 37610 Faisalabad, Pakistan
2Textile Processing Department, National Textile University, Sheikhupura Road, 37610 Faisalabad, Pakistan
3Department of Chemistry, GC Women University Faisalabad, Madina Town, Faisalabad, Pakistan
Citation Information: Autex Research Journal. Volume 16, Issue 3, Pages 160–164, ISSN (Online) 2300-0929, DOI: 10.1515/aut-2015-0032, August 2016
The paper investigates the effects of weave structure and fabric thread density on the comfort and mechanical properties of various test fabrics woven from polyester/cotton yarns. Three different weave structures, that is, 1/1 plain, 2/1 twill and 3/1 twill, and three different fabric densities were taken as input variables whereas air permeability, overall moisture management capacity, tensile strength and tear strength of fabrics were taken as response variables and a comparison is made of the effect of weave structure and fabric density on the response variables. The results of fabric samples were analysed in Minitab statistical software. The coefficients of determinations (R-sq values) of the regression equations show a good predictive ability of the developed statistical models. The findings of the study may be helpful in deciding appropriate manufacturing specifications of woven fabrics to attain specific comfort and mechanical properties.
Thickness Optimisation of Textiles Subjected to Heat and Mass Transport during Ironing
1Department of Technical Mechanics and Computer Science, Lodz University of Technology, Lodz, Poland
2Department of Design, Shoes and Clothing Technology, University of Technology and Humanities in Radom, Radom, Poland
Citation Information: Autex Research Journal. Volume 16, Issue 3, Pages 165–174, ISSN (Online) 2300-0929, DOI: 10.1515/aut-2015-0035, August 2016
Let us next analyse the coupled problem during ironing of textiles, that is, the heat is transported with mass whereas the mass transport with heat is negligible. It is necessary to define both physical and mathematical models. Introducing two-phase system of mass sorption by fibres, the transport equations are introduced and accompanied by the set of boundary and initial conditions. Optimisation of material thickness during ironing is gradient oriented. The first-order sensitivity of an arbitrary objective functional is analysed and included in optimisation procedure. Numerical example is the thickness optimisation of different textile materials in ironing device
Simulations of Heat Transport Phenomena in a Three-Dimensional Model of Knitted Fabric
1Department of Material and Commodity Sciences and Textile Metrology, Faculty of Material Technologies and Textile Design, Lodz University of Technology, Zeromskiego St 116, 90-924 Lodz, Poland.
2Department of Technical Mechanics and Informatics, Faculty of Material Technologies and Textile Design, Lodz University of Technology, Zeromskiego St 116, 90-924 Lodz, Poland.
Citation Information: Autex Research Journal. Volume 16, Issue 3, Pages 128–137, ISSN (Online) 2300-0929, DOI: 10.1515/aut-2015-0042, August 2016
The main goal of the current work is to analyse the three-dimensional approach for modelling knitted fabric structures for future analysis of physical properties and thermal phenomena. The introduced model assumes some simplification of morphology. First, fibres in knitted fabrics are described as monofilaments characterized by isotropic thermal properties. The current form of the considered knitted fabric is determined by morphological properties of the used monofilament and simplification of the stitch shape. This simplification was based on a particular technology for the knitting process that introduces both geometric parameters and physical material properties. Detailed descriptions of heat transfer phenomena can also be considered. A sensitivity analysis of the temperature field with respect to selected structural parameters was also performed.
Relationship between the Physical Properties and Hand of Jean Fabric
1Division of Textile and Kansei Engineering, Graduate School of Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8567, Japan
2Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8567, Japan
3Division of Kansei and Fashion Engineering, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8567, Japan
4Institute of Textile and clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Citation Information: Autex Research Journal. Volume 16, Issue 3, Pages 138–145, ISSN (Online) 2300-0929, DOI: 10.1515/aut-2015-0043, August 2016
We investigated the distinctive characteristics of jean fabrics (denim fabrics obtained from jeans) and compared the physical properties and the hand. We used 13 kinds of jean fabric from commercial jeans and 26 other fabric types. The physical properties were measured using the Kawabata evaluation system, and the fabric hand was evaluated by 20 subjects using a semantic differential method. To characterise the hand of jean fabrics compared with other fabrics, we used principal component analysis and obtained three principal components. We found that jean fabrics were characterised by the second principal component, which was affected by feelings of thickness and weight. We further characterised the jean fabrics according to ‘softness & smoothness’ and ‘non-fullness’, depending on country of origin and type of manufacturer. The three principal components were analysed using multiple linear regression to characterise the components according to the physical properties. We explained the hand of fabrics including jean fabrics using its association with physical properties.
PLA/PHA-Biodegradable Blends for Pneumothermic Fabrication of Nonwovens
1Lodz University of Technology, Department of Material and Commodity Sciences and Textile Metrology, ul. Żeromskiego 116, 90-924 Łódź, Poland
Citation Information: Autex Research Journal. Volume 16, Issue 3, Pages 119–127, ISSN (Online) 2300-0929, DOI: 10.1515/aut-2015-0047, August 2016
This study presents the results of research concerning fabrication of nonwovens from biodegradable polymer blends using the melt-blown method. The experiments performed within the framework of the research confirmed the possibility of obtaining polymer composites based on polylactide (PLA) with poly(hydroxyalkanoates) (PHA) and another aliphatic-aromatic copolyester. The obtained products were subjected to the analyses of chemical structure using the Fourier Transform Infrared Spectroscopy(FTIR) Attenuated Total Reflectance(ATR) method. The physical and mechanical properties of the fabricated nonwoven layers were also tested, which confirmed a wide spectrum of their applicability, depending on the polymer composition used in production.