alexa Development of Directionally Oriented Compressive Weft Knitted Fabrics
ISSN: 2165-8064

Journal of Textile Science & Engineering
Open Access

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Research Article

Development of Directionally Oriented Compressive Weft Knitted Fabrics

Cruz J*, Sampaio S and Fangueiro R

Centre for Textile Science and Technology,) University of Minho, Portugal

*Corresponding Author:
Cruz J
Centre for Textile Science and
Technology, University of Minho, Portugal
Tel: 351253510204
E-mail: [email protected]

Received Date: February 29, 2016; Accepted Date: April 04, 2016; Published Date: April 11, 2016

Citation: Cruz J, Sampaio S, Fangueiro R (2016) Development of Directionally Oriented Compressive Weft Knitted Fabrics. J Textile Sci Eng 6:247. doi:10.4172/2165-8064.1000247

Copyright: © 2016 Cruz J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Polyamide/elastane knitted fabrics with directionally oriented compressive ability was studied. Knitting designs with coursewise, diagonal, walewise, and both coursewise and walewise compressive orientations were created and analysed at four different angles (0º, +45º, -45º and 90º) and up to 50% elongation. At the same stretching and same direction (angle), the tensile force was higher for samples from Serie B (only the elastane was producing miss stitches) than for samples from Serie A (polyamide and elastane yarns were simultaneously producing miss stitches), in most of the cases. There are higher differences between tensile force values of samples from Serie B with the different number of miss stitches, however, very little difference in tensile force values is seen between samples from Serie A with the different number of miss stitches, in most of the cases. Also the tensile force is the highest when samples from Serie B with walewise compressive orientation are stretched at 90º direction, the tensile force value was two times and half higher than that of the same compressive orientation but from Serie A. At 0º direction, the force values of the samples with coursewise compressive orientation from Serie A were higher than that of samples from Serie B due to miss loops force orientation. At the +45º and -45º directions, the force values of the two Series are similar, showing that the designs and the yarns used are less important due to force orientation. Fabrics with diagonal compressive orientation have force values similar among each sample, in all four directions, the diagonal structure enables the control of fabric anisotropy. The prediction of force values in relation to the number of miss stitches sequences and in relation to the different angles are made using regression model. This analysis helps engineer compressive devices with adjustable and directionally oriented stretch structures.

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