Water Repellent Textiles: Understanding Fabric Waterproofing Technology
Explore the world of water repellent textiles and fabric waterproofing technology in this online class. Learn about high-density woven materials, hydrophobic treatments, and factors affecting water repellency. Discover how waterproof fabrics repel rainwater while allowing breathability for enhanced performance.
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Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF Hindusthan College of Arts & Science An Autonomous College- Affiliated to Bharathiar University Approved by AICTE and Govt of Tamilnadu Accredited by NAAC- An ISO Certified Institution Class: III BSc COSTUME DESIGN Class: III BSc COSTUME DESIGN &FASHION &FASHION SUBJECT:TEXTILE FINISHING TECHNOLOGY SUBJECT:TEXTILE FINISHING TECHNOLOGY 1
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 2
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 3
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF Water repellent textiles are often high density woven materials made of very fine yarns or common materials with hydrophobic surface treatment. Waterproofing is defined as the property of a material not to be penetrated by fluids. ... Such fabrics are completely waterproof even under very high pressure. Water repellency of a fabric depends on several factors including nature of the fibers, yarn structure, fabric porosity, finish applied and water impact force. Some fabrics such as those made from cotton easily wet out as compared to those made from hydrophobic fibers such as polypropylene. 4
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF In water repellent fabric, rain water drop can be block but at the same time perspiration can be out. Since the entire fabric is not coated, the fabric remains breathable and repels raindrops such as rainwater. The principle is that it is coated with the repellent chemical which permits the passage of air and vapour between the interlacing in fabric. 5
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 6
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 7
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 8
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 9
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 10
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 11
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 12
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF Water Repellency Test Methods: Most used water repellency test method is is AATCC Test Method 22 2001: water repellency spray test. This method involves spraying of water against the taut fabric surface under controlled conditions. Degree of wetting is rated from 0 5 scale, where 0 refers to complete wetting and 5 to no wetting. Water proofing of the fabrics may be divided into two large classes: Processes in which interstices of the cloth as well as the, surface of the fibers, are covered with a film or skin so that the goods & not-only water shedding but impermeable to air and moisture. Processes whereby the fibers are made water repellent through coating with hydrophobic substance or by a chemical reaction, but the fabric remains porous to air. 13
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF APPLICATION : Outdoor garments, Suit, Coat, Umbrella, Carpet, Surgical gown, Automotive engine filter, Cardboard, etc... 14
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF 15
Online Class (Google Meet): Prepared by V.DEEPA Date:12.08.21, Class : III BSc CDF MCQ MCQ https://docs.google.com/forms/d/e/1FAIpQLSfqttpOQbI67RTfJ-d- xY9OI09t9ZidqIp9kS8EC1x63KP5Tg/viewform?usp=sf_link 16
