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A Study on the Optical Properties of the Filament Yarn Weft Knit Fabrics and the 3-dimensional Model  

Shin, Hye-Sun (Dept. of Clothing and Textiles, Ewha Womans University)
Kim, Jong-Jun (Dept. of Clothing and Textiles, Ewha Womans University)
Jeon, Dong-Won (Dept. of Clothing and Textiles, Ewha Womans University)
Publication Information
Journal of Fashion Business / v.6, no.5, 2002 , pp. 1-11 More about this Journal
Abstract
Today, great percentage of apparel fabrics comprise knit products. A few apparel items are almost exclusively made from knit products including sweaters, T-shirts, lingerie, and hosiery. In weft knits, intermeshing yarn traverses the fabric crosswise. The production rate of knitting machines is about four times higher than that of conventional looms iin proportion to the amount of fabric produced per unit time. Knit apparels fabrics are noted for freedom of body movement, easy-care, resilience, soft draping and quality. The appearance of fabrics is of prime importance along with tactile features such as smoothness, crispness, stiffness when we deal with the handling evaluation of the textiles. In practice, the quality and performance of fabrics judged by sighted evaluators, and it is perhaps logical, in attempting to establish an effective fabric objective measurement system. It is worthwhile to make objective measurement that correlate well with subjective evaluations made by sight and touch together. However, it often imposes difficulties to effectively measure and analyze the appearance or optical properties of the textile surface features. In this study, an attempt is made to provide a preliminary approach to the analysis of the gloss property, which is one of the optical properties of fabrics. The specimens range from 70/24 nylon 6 filament yarn knit fabric to 70/68 nylon 6 filament yarn knit fabric, the latter being finer. A few three-dimensional models based on Peirce's model of knit stitch have been proposed and material properties were given to calculate the properties. Goniophotometric measurements of the specimens were also carried out.
Keywords
3-dimensional model; goniophotometer; luster; optical properties; weft knit fabric;
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