Use of Extended Cover Factor Theory in UV Protection of Woven Fabric

Kostajnšek, Klara; Dimitrovski, Krste

doi:10.3390/polym13081188

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…Several studies have demonstrated the UPF of standard clothing tends to be influenced by fiber type, color, and construction. The cover factor is determined by the tightness of the weave or how close the fibers are drawn together during textile construction and is considered one of the most important factors in determining the UPF of routine textiles [ 20 , 21 ]. For the average consumer shopping for clothing that may offer added UV protection, the store the garment is purchased from, the style of the garment, cost, color, and fiber composition are the features readily apparent for consumers to consider.…”

Section: Discussionmentioning

confidence: 99%

Assessment of UV Protection for Children's Summer Clothing

Cole,

Ilyas,

Ilyas

2023

Cureus

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Introduction: Excess ultraviolet (UV) radiation exposure during childhood poses a particular long-term risk of developing skin cancer later in life however recent studies have called attention to the absorption of chemical sunscreen ingredients into the bloodstream with unclear significance. This has led to recommendations to consider sun protection in the form of clothing to reduce the need for sunscreen products. Methods: Ten brands of routine summer clothing not labeled as sun protective from five distributors marketed for children were identified with varying price ranges. Summer clothing items consisting of T-shirts and tops were evaluated for fiber composition, cost, and UPF testing was performed to determine UVA and UVB transmittance. Results: Around 88.2% of blended textile compositions compared to 60% of 100% cotton textiles offered adequate UV protection with an Ultraviolet Protection Factor (UPF) greater than 15. 58% of blended fabrics compared to 50% of cotton textiles offered a UPF greater than 30. There was no correlation between brand and cost with UPF values. Conclusions: In the absence of regulations for testing and labeling of all children’s garments for UV protection, guidelines for the pediatric population for choosing clothing for the summer should reflect the information available to consumers that is easy to understand and more likely to result in higher UPF values. Based on fiber composition, blended textiles are more likely to have adequate UV protection compared to 100% cotton or 100% polyester.

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Section: Discussionmentioning

confidence: 99%

Assessment of UV Protection for Children's Summer Clothing

Cole,

Ilyas,

Ilyas

2023

Cureus

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“…It means that in practice, cover factor is calculated independently for warp and weft yarn by the proportion of fabric area covered by those yarn, according to Equation (2): Cf = Cfwa + Cfwe − Cfwa × Cfw as Cfwa = Dwa × dwa and Cfwe = Dwe × dwe, where Dwa and Dwe are densities of warp and weft and dwa and dwe are the diameter of warp and weft yarns, respectively. The cover factor directly depends on the yarn density and the yarn count [ 26 ]. Finally, the fabric weight was obtained according to the standard ISO 3801 by measuring the textile mass per unit area.…”

Section: Methodsmentioning

confidence: 99%

“…as Cfwa = Dwa × dwa and Cfwe = Dwe × dwe, where Dwa and Dwe are densities of warp and weft and dwa and dwe are the diameter of warp and weft yarns, respectively. The cover factor directly depends on the yarn density and the yarn count [26]. Finally, the fabric weight was obtained according to the standard ISO 3801 by measuring the textile mass per unit area.…”

Section: Methodsmentioning

confidence: 99%

Influence of Structure and Composition of Woven Fabrics on the Conductivity of Flexography Printed Electronics

et al. 2021

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The work is framed within Printed Electronics, an emerging technology for the manufacture of electronic products. Among the different printing methods, the roll-to-roll flexography technique is used because it allows continuous manufacturing and high productivity at low cost. Nevertheless, the incorporation of the flexography printing technique in the textile field is still very recent due to technical barriers such as the porosity of the surface, the durability and the ability to withstand washing. By using the flexography printing technique and conductive inks, different printings were performed onto woven fabrics. Specifically, the study is focused on investigating the influence of the structure of the woven fabric with different weave construction, interlacing coefficient, yarn number and fabric density on the conductivity of the printing. In the same way, the influence of the weft composition was studied by a comparison of different materials (cotton, polyester, and wool). Optical, SEM, color fastness to wash, color measurement using reflection spectrophotometer and multi-meter analyses concluded that woven fabrics have a lower conductivity due to the ink expansion through the inner part of the textile. Regarding weft composition, cotton performs worse due to the moisture absorption capacity of cellulosic fiber. A solution for improving conductivity on printed electronic textiles would be pre-treatment of the surface substrates by applying different chemical compounds that increase the adhesion of the ink, avoiding its absorption.

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“…The effect of cover factor of the fabric on different properties have been studied by some authors, like flammability [7,8], UPF protection [9,10], air permeability [11][12][13][14], moisture transport [15,16], shrinkage [17,18], light transmition [19,20] or noise absorption [21].…”

Section: Introductionmentioning

confidence: 99%

A Preliminary Study of Analising Weft Cover Factor of Woven Fabrics by Image Treatment

Montava

Díaz-García

Carbonell

et al. 2022

MSF

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Cover factor is defined as the ratio of the area covered by yarns to the total area of the fabric. This fabric’s characteristic is a basic construction parameter of woven cloth related to its end-use behaviour. Different authors are focused on studying the effect of the cover factor fabric on different properties of the fabric, like air permeability, ultraviolet protection, noise absorption and light transmission. However, the aim of this work is study the capacity of the weft to achieve a certain degree of coverage in the woven fabric, taking advantage of the warp's ability to allow light to pass through its own structure and the opacity of the weft.

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Use of Extended Cover Factor Theory in UV Protection of Woven Fabric

Cited by 6 publications

References 16 publications

Assessment of UV Protection for Children's Summer Clothing

Assessment of UV Protection for Children's Summer Clothing

Influence of Structure and Composition of Woven Fabrics on the Conductivity of Flexography Printed Electronics

A Preliminary Study of Analising Weft Cover Factor of Woven Fabrics by Image Treatment

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