Water repellency is related to the degree of resistance of fabric to surface wetting, water penetration, water absorption or any combination of these properties. Therefore, it is difficult to define water repellency as there are various dynamic and static tests are used to evaluate the performance of water repellency. Generally speaking, water repellency can be described as the ability of a fabric to withstand penetration or wetting by a water drop under test conditions. Comparing with waterproofing, water repellency is made by applying hydrophobic material onto a fabric; waterproofing is made by filling pores with substances that are impermeable to water and air.  A water repellent, treated fabric has open pores that maintains small to large water vapour and air permeability. In order to provide a wearer with a warm and dry condition with high levels of thermophysical and thermophysiological comfort, a fabric in the garment form should allow air and water vapour, generated by exudation of perspiration from skin, to pass through the fabric. Therefore, casual wear is usually treated with a water repellent treatment instead of a waterproof treatment. In this paper, the effect of water repellent management treatment on the UV blocking effect of 100% cotton knitted structure will be studied.

Effect of water repellent treatment on the UV blocking effect of 100% cotton knitted structure

244th National Meeting (2012)

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