We often use raincoats and umbrellas on rainy days. If the waterproof performance of the
manufacturing materials is not good, water will penetrate, and the ideal rainproof effect
we want will not be achieved. However, it is better to use anti-hydrostatic pressure The
hydrostatic pressure resistance index is one of the important indexes of waterproof and
moisture-permeable fabrics. Hydrostatic pressure refers to the resistance that water
encounters as it passes through the fabric. Under the condition of standard atmospheric
pressure, the fabric is subjected to continuously rising water pressure until water droplets
seep out from the back of the fabric. At this time, the measured water pressure value is
the hydrostatic pressure. The higher the hydrostatic pressure the fabric can withstand,
the better the water repellency or leak resistance. The fabric hydrostatic pressure tester
complies with the standards of ISO-811, AATCC127, JIS L1092, and FZ/T 01004. This
machine is used to measure the hydrostatic pressure resistance of fabrics, and can
also be used to measure the hydrostatic pressure resistance of coating materials.
The waterproof performance of various fabrics (such as canvas, tarpaulin, crepe,
tent cloth, raincoat cloth, etc.) is expressed by the hydrostatic pressure of the fabric.
For more information please refer to
http://www.lab-testequipment.com/Fabric-Hydrostatic-Pressure-Tester.html