Evaluation of the Structure of Monofilament PET Woven Fabrics and their UV Protection Properties

Dimitrovski, Krste; Sluga, Franci; Urbas, Raša

doi:10.1177/0040517509352527

Cited by 22 publications

(23 citation statements)

References 5 publications

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“…These results are shown in Table 3. For further observation, we took into consideration only samples in plain weave, avoiding the small influence of twill weave on the values of K T , K R , and K A , as well as on the complexity in their presentation, in tables [5]. On the other hand, conclusions based on the samples in the plain weave were used in the model and showed that the steps are valid for the samples in the twill weave also.…”

Section: Results and Calculationsmentioning

confidence: 99%

“…Many researchers have investigated the influence of different factors related to the textile materials used for UV protection. They have investigated the influence of type of material [1,2], fabric constructions [1,[3][4][5], colors, and different additives [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…In one of our previous research works [5], we have evaluated the penetration of UV rays through a one-layered monofilament high-module polyethylene terephthalate (PET) material (e.g., fabrics), in order to determine the amount of reflected, absorbed, and transmitted UV rays by one yarn and two yarns (one on top of the other) in the fabric structure. We have calculated the quotient, as shown in Equations (6-8) for each sample.…”

Section: Introductionmentioning

confidence: 99%

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A New Simplified Model for Predicting the UV-Protective Properties of Monofilament PET Fabrics

Kostajnšek

Urbas

Dimitrovski

2019

Autex Research Journal

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Knowing the reflection, transmission, and absorption properties of the yarns from which the woven fabric is made, prediction of a fabric’s UV-protective properties is simple. Using the geometrical properties of monofilament yarns and fabrics, which were determined optically, and following the cover factor theory, we have determined the areas of fabrics covered with no yarns, only one yarn, and two yarns. From a special selected set of high-module polyethylene terephthalate (PET) monofilament materials (e.g., fabrics), we have elaborated a method for determining the reflection, transmission, and absorption of yarns. By first defining the differently covered areas of fabrics, we were able to use them in a mathematical model for calculating and predicting the UV-protective properties of the fabrics. The calculated and measured values of the UV-protective properties of the selected test fabrics were highly correlated, with a correlation coefficient >0.98.

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Section: Results and Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A New Simplified Model for Predicting the UV-Protective Properties of Monofilament PET Fabrics

Kostajnšek

Urbas

Dimitrovski

2019

Autex Research Journal

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“…Although the textile fabrics themselves undergo limited UV-induced degradation, they still provide excellent UV protection [2]. Various investigations have pointed out the infl uence of clothing design [3,4], fabric construction (open porosity, weight, and thickness) [5][6][7][8][9][10][11][12][13], dyes, chemical agents or UV stabilizers applied to the fabric [10,[14][15][16][17][18], and type of fi bre [19][20][21] on UV protection properties. However, the porosity or tightness of the fabric is the dominant parameter in obtaining UV radiation protection, followed by the ability of fi bres to absorb UV radiation (UVR).…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet Protection Factor of Hemp/Filament Hybrid Yarn Knitted Fabrics

Stanković¹,

Popović²,

Kocić³

et al. 2017

TEK

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It is generally accepted that synthetic fi bres provide high UV protection capability of textile products, while cellulose fi bres have low UV absorption capacity. However, textile materials made of synthetic fi bres are not considered to be comfortable for wear in warm weather, whereas cellulose-based textile materials are considered to be much more comfortable to wear, especially in the summer months. For this research, the idea was to produce specially blended knitted fabrics from staple/fi lament hybrid yarns in order to provide clothing materials with eff ective UV protection properties, keeping satisfactory comfort properties as well. To obtain hybrid yarns, folding technique was used. The Ultraviolet Protection Factor (UPF), as a quantitative measure of the eff ectiveness of the material to protect human skin against UV radiation, was determined for the rib knitted fabrics by in vitro test method according to the European standard. The physical properties of the knitted fabrics related to their UV protection properties: bulk density, porosity and air permeability were also determined. The hybrid yarns, from which the rib knitted fabrics were produced, having always hemp yarn as a staple component, caused the diff erences in UV protection capability of the rib knitted fabrics through the infl uence of a fi lament spun component. The hybrid yarn aggregation within knitted fabrics also infl uenced their UPF values. Even though the pure hemp knitted fabric was marked as "UPF>50" (according to European standard) due to natural pigments and lignin in hemp fi bres which act as UV absorbers, most of the hemp/fi lament hybrid yarn knitted fabrics exhibited even higher UPF. Therefore, the engineering approach proposed in this research was confi rmed as an eff ective way to design clothing materials with optimal UV protection capability and other wear comfort parameters. Keywords: ultraviolet protection factor, hemp/fi lament hybrid yarn, knitted fabric, air permeability

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“…1). OF is a critical feature regarding the end-use performance that has to be taken into consideration in the fields of protection (Gabrijelcicet al 2009;Webster et al 2009;Dimitrovski et al 2010;Gotipamul et al 2014), end-use performance (Teli et al 2008;Akgun et al 2012), thermo-physiological comfort ( € Ozc¸elik et al 2007;Lee and Obendorf 2012;Kumar and Mitra 2013) and fabric hand (Naebe et al 2013). In the specialized literature, it is more usual to deal with OF complementary, the cover factor (i.e., the fraction of the web area covered by yarns) (Marks et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Psychophysical Validation of A Digital Method to Assess Ill‐Defined Visual Boundaries: An Example with Fabric Openness Factor

Tàpias

Ralló

Escofet

2015

Journal of Sensory Studies

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Fabric openness factor (OF) is the fraction of the web area that is uncovered by yarns. OF is a critical feature regarding the end-use performance of the fabric and should be accurately assessed.However, digital OF estimates yielded by image binarization algorithms differ among them depending on the criteria used, mainly due to ill-defined boundaries, thus precluding a PRACTICAL APPLICATIONSThis work addresses the problems that arise at the moment of measuring the area of a region with illdefined boundaries without any standard to control the process of measurement. Similar problems are also found in important fields such as medical imaging. In these cases, there are usually different digital methods that give rise to estimates of the magnitude which mismatch among them. To solve these differences, a more common approach is to use estimates provided by a panel of observers and consider them to be objective, regardless of the bias between subjective responses and actual values.However, visual estimates do not show either accuracy (because they are psychophysical measures) or precision (due to the variability among observers). To overcome these difficulties, we propose a procedure to validate a digital method through visual estimates provided by a panel of observers, taking into account the psychophysical models of Fechner and Stevens.

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Evaluation of the Structure of Monofilament PET Woven Fabrics and their UV Protection Properties

Cited by 22 publications

References 5 publications

A New Simplified Model for Predicting the UV-Protective Properties of Monofilament PET Fabrics

A New Simplified Model for Predicting the UV-Protective Properties of Monofilament PET Fabrics

Ultraviolet Protection Factor of Hemp/Filament Hybrid Yarn Knitted Fabrics

Psychophysical Validation of A Digital Method to Assess Ill‐Defined Visual Boundaries: An Example with Fabric Openness Factor

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