The change of water vapour resistance of materials used for the clothing production during exploitation

Reljić, Mirjana; Stepanovic, Jovan; Lazic, Branislava; Ćirković, Nenad; Cerović, Dragana D.

doi:10.5937/savteh1602073r

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…For determination of the rating levels of the water vapour resistance, the classification developed by the Hohenstein Institute (Table 8) is used. 39…”

Section: Resultsmentioning

confidence: 99%

“…For determination of the rating levels of the water vapour resistance, the classification developed by the Hohenstein Institute (Table 8) is used. 39 Research results (Table 4) show that the water vapour resistance coefficient of developed elastic warp-knitted fabrics is between 6 and 13 Pa*m 2 *W −1 . According to the Ret comfort-rating system by Hohenstein Institute, these values are evaluated as good levels.…”

Section: Water Vapour Resistancementioning

confidence: 99%

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The effect of weft yarn type and elastomer yarn threading on the properties of elastic warp knitted fabrics. Part II: Thermal comfort properties

Kyzymchuk

Marmaralı

Melnyk

et al. 2023

Journal of Engineered Fibers and Fabrics

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The aim of this study is to determine the performance properties of elastic warp-knitted fabrics used for medical purposes. The samples were knitted using different weft yarn material and changing the threading order of elastomer yarn. The detailed results of the dimensional and elasticity performance of elastic warp-knitted fabrics had been reported in Part I of this series. In this part, the effects of weft yarn material and the threading order of elastomer yarn on the thermal comfort characteristics were investigated. It has been seen that the type and linear density of the transverse weft yarns and the number of elastomer yarns in the fabric structure affected significantly the thermal comfort and permeability characteristics of the developed elastic warp-knitted fabrics. According to the results, using polyester yarns as weft and reducing the number of elastomer yarns led to an increase in air permeability. Additionally, the thermal conductivity characteristics of the fabrics increased as the number of elastomer yarns in the structure increased. It has been seen that from the results, the water vapour resistance coefficient of the samples is appropriate for the usage of these fabrics in medical products.

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“…For determination of the rating levels of the water vapour resistance, the classification developed by the Hohenstein Institute (Table 8) is used. 39…”

Section: Resultsmentioning

confidence: 99%

Section: Water Vapour Resistancementioning

confidence: 99%

The effect of weft yarn type and elastomer yarn threading on the properties of elastic warp knitted fabrics. Part II: Thermal comfort properties

Kyzymchuk

Marmaralı

Melnyk

et al. 2023

Journal of Engineered Fibers and Fabrics

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“…The water vapor resistance test of the flax/hemp nonwoven did not show statistically significant differences between all variants; the values were in range from 3.3119 to 4.6196 m 2 Pa/W. The results indicated the high capacity of the developed nonwovens for moisture removal, which can have an effect on improving the comfort of the face mask wearing [ 48 ].…”

Section: Resultsmentioning

confidence: 99%

Development of a Layer Made of Natural Fibers to Improve the Ecological Performance of the Face Mask Type II

Mańkowski,

Zimniewska,

Gieparda

et al. 2023

Materials

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The aim of this study was to develop a natural nonwoven layer made of cottonized bleached flax and cotton fibers which is suitable to replace one of the three polypropylene layers of face mask type II in order to reduce non-biodegradable waste production and limit the negative impact of used masks on the environment. The work focused on the design of a nonwoven structure based on properly blending cotton and flax fibers as well as ensuring the cover factor, which can support the mask’s barrier properties against air dust particles and does not make breathing difficult. Additionally, a biodegradable film was developed to connect the nonwoven layer with the other polypropylene filtering layers. The effectiveness of the biodeterioration of the flax/cotton nonwoven was evaluated based on a test of the susceptibility of materials to the action of soil microorganisms. The flax/cotton nonwoven layer was tested in terms of mechanical, physical, and biophysical properties, and an analysis of the covering of the nonwoven surface with fibers was conducted as well. The results confirmed that the structure of flax/cotton nonwovens is suitable to replace the nondegradable polypropylene layer of the face mask type II to improve its environmental performance.

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“…Among the tested samples, the most favorable, i.e., the lowest water vapor resistance, was demonstrated by the nonwoven insert without PES additives (4.90 m 2 ·Pa·W −1 ) ( Figure 11 ). According to the comfort rating system developed by the Hohenstein Institute ( Table 6 ), [ 64 , 65 ], this insert is the only one that gives a water vapor resistance of no more than 6 m 2 ·Pa·W −1 ), which proves its high efficiency in terms of sweat evacuation at a high activity rate of the user of clothing.…”

Section: Resultsmentioning

confidence: 99%

Multilayer Nonwoven Inserts with Aerogel/PCMs for the Improvement of Thermophysiological Comfort in Protective Clothing against the Cold

et al. 2022

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This study aimed to assess the developed nonwoven inserts with aerogel/PCM (phase change material) microcapsules for use in protective clothing against cold in terms of properties related to thermophysiological comfort. These inserts were obtained by the thermal bonding of a multilayer system consisting of needled-punched nonwovens and silica aerogel particles and/or PCM microcapsules evenly distributed between them. The influence of aerogel and PCM microcapsules on the basic physical properties of inserts, their microstructure, air permeability, and water vapor resistance was investigated and analyzed. The thermal insulation properties of inserts were assessed based on thermal conductivity results. The inserts with PCMs were also tested for their ability to regulate the temperature in the undergarment microclimate using the differential scanning calorimeter (DSC) and the “skin model” device. The research showed that the use of aerogel allowed for reducing the thermal conductivity of the insert by approximately 13% compared to the insert without additives. The high values obtained of the melting and crystallization enthalpy of inserts with PCMs confirmed their high efficiency in the heat absorption and release. Thus, the use of aerogel and PCMs in protective clothing against cold seems to be an effective solution for improving its protective properties and actively adapting its thermal insulation to the changing temperature conditions and the activity level of employees.

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The change of water vapour resistance of materials used for the clothing production during exploitation

Cited by 8 publications

References 4 publications

The effect of weft yarn type and elastomer yarn threading on the properties of elastic warp knitted fabrics. Part II: Thermal comfort properties

The effect of weft yarn type and elastomer yarn threading on the properties of elastic warp knitted fabrics. Part II: Thermal comfort properties

Development of a Layer Made of Natural Fibers to Improve the Ecological Performance of the Face Mask Type II

Multilayer Nonwoven Inserts with Aerogel/PCMs for the Improvement of Thermophysiological Comfort in Protective Clothing against the Cold

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