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Air Permeability

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Omer Berk Berkalp – One of the best experts on this subject based on the ideXlab platform.

  • Air Permeability & Porosity in Spun-laced Fabrics
    Fibres & Textiles in Eastern Europe, 2006
    Co-Authors: Omer Berk Berkalp

    Abstract:

    The relationship between Air Permeability and fabric characteristics such as fabric weight, thickness and density in a variety of nonwoven types has already been investigated. The effect of porosity on Air Permeability has also been thoroughly evaluated in numerous research works. However in this paper, we report the effects of the specific energy in hydroentan glement on the Air Permeability of the resultant fabric. It is shown that within the ranges of the measurements, energy is not the only factor that affects the Permeability. Although the same web weight is used in all trials, fabric weights and thicknesses did not show any clear or linear decrease when the energy given to the fabric was increased. The alteration of web weights and thicknesses under enhanced energy shows that entanglement mechanism in these nonwovens is not not as simple as we had expected. It is thought that the flow corridors in nonwovens are certainly very complex. This increased intricacy may be due to the randomness of nonwoven structures or the method of bonding such as the random hydroentanglement of spun-laced fabrics.

  • Air Permeability porosity in spun laced fabrics
    Fibres & Textiles in Eastern Europe, 2006
    Co-Authors: Omer Berk Berkalp

    Abstract:

    The relationship between Air Permeability and fabric characteristics such as fabric weight, thickness and density in a variety of nonwoven types has already been investigated. The effect of porosity on Air Permeability has also been thoroughly evaluated in numerous research works. However in this paper, we report the effects of the specific energy in hydroentan glement on the Air Permeability of the resultant fabric. It is shown that within the ranges of the measurements, energy is not the only factor that affects the Permeability. Although the same web weight is used in all trials, fabric weights and thicknesses did not show any clear or linear decrease when the energy given to the fabric was increased. The alteration of web weights and thicknesses under enhanced energy shows that entanglement mechanism in these nonwovens is not not as simple as we had expected. It is thought that the flow corridors in nonwovens are certainly very complex. This increased intricacy may be due to the randomness of nonwoven structures or the method of bonding such as the random hydroentanglement of spun-laced fabrics.

Rattanaphol Mongkholrattanasit – One of the best experts on this subject based on the ideXlab platform.

  • Evaluating the Air Permeability Properties of Summer Cooling Towels
    Materials Science Forum, 2020
    Co-Authors: Yim Ling Lam, Wen Yi Wang, Chi-wai Kan, Kasem Manarungwit, Wasana Changmuong, Jitti Pattavanitch, Wirat Wongphakdee, Rattanaphol Mongkholrattanasit

    Abstract:

    Air Permeability is one of the thermal comfort properties of clothing and fabrics. This study evaluated the Air Permeability properties of summer cooling towels of different brands available in the market, “Perfect Fitness”, “N-rit” and “Cooldyxm” and an anonymous ice towel. The Air Permeability function of the cooling towels was evaluated instrumentally. Other than the Air Permeability property, other fabric specification such as fiber composition, fabric type, fabric weight, fabric thickness, yarn linearity and fabric density were measured. Some specifications were found to have good statistical correlation with the Air Permeability. Based on the experimental results and statistical analysis, the sample of Perfect Fitness was found to have the poorest cooling effect, whereas N-rit, Cooldyxm and Ice Towel samples had comparable Air Permeability properties. The best performance of Air Permeability was seen in N-rit sample. The underlying reason could be ascribed to the fabric structure and thickness. This study can provide some information for choosing cooling towel for practical use.

  • An Analysis of Air Permeability of Men’s Quick-Dry Sportswear
    E3S Web of Conferences, 2020
    Co-Authors: Yan-ngo Fan, Wen Yi Wang, Chi-wai Kan, Jitti Pattavanitch, Krailerck Visesphan, Kornchanok Boontorn, Thawatchai Intasean, Rattanaphol Mongkholrattanasit

    Abstract:

    Air Permeability is one of the thermal comfort properties of clothing and fabrics. This study evaluated the quick dry properties of summer men’s T-shirts of different brands (Nike, Adidas, Laishilong and Columbia) by studying the Air Permeability behavior. Both Nike and Adidas samples were knitted by single jersey, while double jersey was used for Laishilong and Columbia T-shirts. The materials for Adidas, Laishilong and Columbia were polyester while Nike was made of cotton and polyester. Overall, both Nike and Adidas were found to perform better in terms of Air Permeability than those of Laishilong and Columbia.

  • Evaluation on the Air Permeability Properties of the Mainstream Sportswear Brands
    Applied Mechanics and Materials, 2020
    Co-Authors: Man Ting Lam, Wen Yi Wang, Chi-wai Kan, Kasem Manarungwit, Somchai Udon, Rattanaphol Mongkholrattanasit

    Abstract:

    The present study investigated the Air Permeability of three representative sportswear brands products (OUDIKE, NIKE and an unknown brand bought from the boutique) in Hong Kong marketplace. It was found that NIKE sportswear had the highest Air Permeability (0.23kPa*s/m) among the samples, which indicates that it allows more Air flow passing through the textile and provides good comfort property to wearer, while OUDIKE samples showed the lowest Air Permeability in capacity (0.08kPa*s/m). The fiber content and fabric structure may be the reason that affects the Air Permeability. This study would provide a comparative information about Air Permeability property of the mainstream sportswear brands product in Hong Kong market.

M Madhusoothanan – One of the best experts on this subject based on the ideXlab platform.

  • Thermal resistance and Air Permeability of jute-polypropylene blended needle- punched nonwoven
    , 2011
    Co-Authors: Sanjoy Debnath, M Madhusoothanan

    Abstract:

    Thermal resistance and Air Permeability of needle-punched nonwoven fabric made from jute and polypropylene blends have been studied using the Box and Behnken factorial design to observe the effect of fabric weight, needling density and blend proportion on thickness, thermal resistance, specific thermal resistance, Air Permeability and sectional Air Permeability. Correlation matrix and cluster analysis have also been used to understand the relationship and grouping behaviour of the dependent and independent variables. It is observed that the thermal resistance and thickness increase but Air Permeability and sectional Air Permeability decrease significantly with the increase in fabric weight at all levels of jute contents. Significant ( p < 0.05000) negative correlations r = – 0.67 and r = – 0.61 exist between needling density & thermal resistance and needling density & specific thermal resistance respectively. The highest thermal resistance and specific thermal resistance have been obtained at 430 g/m 2 fabric weight and 150 punches/cm 2 needling density. All dependent variables are highly influenced by fabric weight (Euclidean distance ~ 560) which is a different cluster identity.

  • Thermal insulation, compression and Air Permeability of polyester needle-punched nonwoven
    , 2010
    Co-Authors: Sanjoy Debnath, M Madhusoothanan

    Abstract:

    The normal round, circular hollow and trilobal cross-sectional shaped polyester fibres have been used to prepare needlepunched nonwoven fabrics for technical textile application. Effects of fabric weight and fibre cross-sectional shapes on thermal insulation value (TIV), fabric thickness, density, percentage compression, Air Permeability and sectional Air Permeability (SAP) have been studied. Comparison between Marsh and plate methods of TIV measurement has also been studied along with the inter-relation and grouping of parameters using correlation matrix and cluster analysis approach respectively. The TIV, thickness, density, Air Permeability and SAP fall under different sub-cluster but all these parameters are dependent on fabric weight. Plate method of TIV measurement is preferred over Marsh TIV measurement because of the easy preparation of samples and the reason that the samples retain their original properties and it gives more accurate results. Trilobal fabric sample shows highest TIV, thickness and percentage compression followed by regular and hollow polyester needle-punched fabrics. Thermal insulation value, thickness and density of the fabric increase but percentage compression, Air Permeability and SAP decrease with the increase in fabric weight. The fabric thickness is significantly correlated with fabric weight and TIV. Fabric weight versus Air Permeability and fabric density versus SAP are negatively correlated with significant correlation coefficient.