This paper reports the effect of woven fabric construction on macroporosity properties. The area of a macropore's cross section, equivalent, maximum, and minimum pore diameters, pore density, and open porosity are observed in this research involving woven fabric construction parameters—yarn linear density, fabric tightness, weave type, and denting. Predictive models, determined by genetic programming, are derived to describe the influence of fabric construction. The results show very good agreement between the experimental and predicted values. This work provides guidelines for engineering staple- yarn cotton fabrics in a grey state in terms of macroporosity properties.

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This paper presents the effects of woven fabric construction and color on the ultraviolet protection factor. Weave type, fabric tightness, cover factor, volume porosity and color of lightweight summer woven fabrics were observed in this research. Color had the biggest influence on the ultraviolet protection factor of fabrics, whereas woven fabric construction was essential when light pastel colored fabrics were used as ultraviolet protection. This work provides guidelines for engineering woven cotton fabrics with sufficient ultraviolet protection.

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A new experimental model based on the geometric parameters of a woven structure's yarn linear density and fabric tightness has been developed to predict the volume porosity of woven fabrics. The experimental model is based on a factor analysis. Experiments involve fabrics made from staple yams, but the mathematical model of volume porosity can also be applied to fabrics made from mono- or multifilament yarns. The experimental results of volume porosity correspond very well with calculated values according to the proposed equation.