After enter autumn, The weather is getting cooler and the rains more frequently.When you want to traveling.You need prepare the rain and typhoon, also have to consider wearing clothes with good moisture permeability.
Generally speaking. Standard definition of a jacket: Adopt the textile fabrics with waterproof and moisture permeable. Processed into outdoor sports, with waterproof and moisture permeable clothing.
How to judge the waterproof, moisture permeability of clothes? Here GESTER introduce the common standard test method of waterproof and moisture permeable clothing fabrics.
Waterproof Performance
Clothing water resistance refers to the resistance of clothing to external water with certain pressure or rain water with certain kinetic energy as well as to liquid water such as snow, dew and frost outside various clothing.
Assessment indicators are :Surface moisture resistance, hydrostatic pressure.
1.Surface moisture resistance
《Textiles - Testing and evaluation for water resistance - Spray test method》 :Principle of test: spray a certain amount of water on the surface of the sample under specified conditions, and observe the wetting condition of the sample.
The results were compared with the standard sample cards, and the closest sample level was used as the water repellent level.Level 5 is the best and level 1 is the worst.
Water-repellent grading chart:
Note: the anti-wetting performance can only be achieved if the water level reaches level 3.
2.Hydrostatic pressure
《Textiles - Testing and evaluation for water resistance - Hydrostatic method》 Simulation of outdoor raindrops continued wet environment.Use the hydrostatic pressure of the fabric is used to represent the resistance of water through the fabric.Under standard atmosphere, the sample is subjected to rising water pressure on one side until three seepage points appear on the other side,record the current pressure at the third seepage point.
Test phenomenon:
Note: Generally, products with high hydrostatic pressure resistance are coated fabrics or coated fabrics, which do not perform well in hand feel, air permeability and moisture permeability.
GESTER is leading and outstanding company in manufacturing and supplying a wide range of textile testing equipment. Our machines all meet with: ISO, ASTM, AATCC, BS, EN, DIN, JIS and other requireable standards.
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