For waterproof breathable clothing, both the water resistance and the vapor transmission are very important for user comfort. The water-resistant fabric with low vapor transmission would build up humidity and sweat under the garment very quickly, possibly causing hyperthermia. Hence, there is a necessity for developing a waterproof-breathable fabric that can block water while exhibiting a certain level of vapor permeability.
Due to the inverse relationship between water resistance and vapor/air permeability, the protection level against water should be compromised to attain a certain level of vapor transmission. So this paper describes the mechanism of waterproof breathable fabric, various fabrics, and its application in cold weather apparel.
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About Author:
Harun Venkatesan and V.N. Gowrishankar are students in the 4th year of B.Tech in Textile Chemistry at SSM College of Engineering.
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