Experimental Method For Testing Water Resistance Of Textiles

Experimental method for testing water resistance of textiles

2020-05-26 23:10:06

The production and manufacturing process of textiles are relatively complicated. The clothing that people wear actually undergoes countless processes before they change from cotton or yarn into fabric products. Among them, there are hundreds of types of textile and clothing testing. , For example, the water resistance test of textiles.

The outdoor fabric industry is used to calling water pressure resistance, and the unit is expressed in mmH2O, which means that the unit area withstands the strength of water pressure. Under standard laboratory conditions, the fabric is subjected to the pressure of spraying distilled water upward, and the maximum water pressure is recorded, such as water pressure resistance 5000mmH2O, That is, the unit area can withstand a maximum pressure of 5m without leakage.

Common test standards: American standard AATCC 127;

Japanese standard JIS L1092B;

European standard: IS0 811.

Water pressure resistance test is divided into two methods before and after washing:

1.Pre-washing test: Outdoor brands produced in China generally test the water pressure resistance value before washing, excluding the after-washing value. If the water pressure resistance value drops a lot after washing several times, it may drop by about 1000-3000mmH2o

2. Measurement after washing: The well-known foreign outdoor brands generally measure the water pressure resistance after 5 washings. THENORTHFACE even adopts the method of measuring the water pressure resistance after 20 washings. The water pressure resistance value drops very much due to the test after multiple washings. The test method is that any coating plant or film compounding plant must be processed with better materials. For example, the pressure resistance of the coated fabric needs to be 5000mmh2O after 5 washings, then at least 7-8000mmh2o before washing!

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AG17 Hydrostatic Head Pressure Tester