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AATCC 42 Water Resistance

Standard:

AATCC

Method:

AATCC 42

Title:

Water Resistance: Impact Penetration Test

Purpose and Scope

AATCC 42 Water Resistance is applicable to any textile fabric which may or may not have been given a water-resistant or water-repellent finish.  The test measures the resistance of fabrics to the penetration of water by impact, and thus can be used to predict the probable resistance of fabrics to rain penetration.  It is especially suitable for measuring the penetration resistance of garment fabrics. The results obtained with this test method depend on the water repellency of the fibers and yarns and on the construction and finish of the fabric.

Principle

A volume of water is allowed to spray against a taut surface of a test specimen backed by a weighed blotter.  The blotter is then reweighed to determine water penetration and the specimen is classified accordingly.

 

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