Breathability: An Important Feature for Waterproof Apparel

Abstract:

Waterproof breathable fabrics are designed for use in garments that protect from environmental factors like wind, rain and loss of body heat. Waterproof fabric completely prevents the penetration and absorption of liquid water. The term breathable implies that the fabric is actively ventilated. Breathable fabrics passively allow water vapour to diffuse through them yet prevent liquid water penetration. High functional fabrics support active sportswear with importance placed on high functions and comfort. Finally, materials with heating and/ or cooling properties have recently attracted the market’s interest. All these materials do not pursue a single function, but different functional properties combined on a higher level. Fabrics convey water vapour from body perspiration through material, while remaining impervious to external liquids such as rainwater and are widely used in sportswear and similar applications. Water-resistant and moisture-permeable materials may be divided into three main categories – high-density fabrics, resin-coated materials and film-laminated materials – which manufacturers select according to the finished garment requirements in casual, athletics, ski or outdoor apparel.