How do you measure; a) waterproofness, b) water repellency?
Waterproofness Waterproofness can be measured by four (4) different methods: • Low Hydraulic Pressure Test (JISL-1092): It is used to measure from 1,500millimeter-2,000millimeter. The unit is “millimeterH2O”. • High Hydraulic Pressure Test (JISL-1092): It is used to measure over 2,000millimeter. The unit is “kg/cm2” (kilograms per square centimeter) (approximately 1kg/cm2=10,000millimeterH2O). • Mullen Burst Test (ASTM-D751): This is achieved by using the same machine that measures the “bursting strength of fabric” and it is measured in “PSI” (Pounds per Square Inch). • ISO Pressure Test JISL-1092, ISO 92 and ISO 811- standard ISO test Each method uses different equipment but the function of the machine is the same, in that it applies pressure by water to the fabric to indicate at what point the fabric will begin to leak. b) Water Repellency Usually water repellency is tested by a simple test called the “shower test” (JISL-1092). An actual “shower” of water on the fabric is used to det
Waterproofness Waterproofness can be measured by four (4) different methods: • Low Hydraulic Pressure Test (JISL-1092): It is used to measure from 1,500millimeter-2,000millimeter. The unit is “millimeterH2O”. • High Hydraulic Pressure Test (JISL-1092): It is used to measure over 2,000millimeter. The unit is “kg/cm2” (kilograms per square centimeter) (approximately 1kg/cm2=10,000millimeterH2O). • Mullen Burst Test (ASTM-D751): This is achieved by using the same machine that measures the “bursting strength of fabric” and it is measured in “PSI” (Pounds per Square Inch). • ISO Pressure Test JISL-1092, ISO 92 and ISO 811- standard ISO test Each method uses different equipment but the function of the machine is the same, in that it applies pressure by water to the fabric to indicate at what point the fabric will begin to leak. b) Water Repellency Usually water repellency is tested by a simple test called the “shower test” (JISL-1092). An actual “shower” of water on the fabric is used to det
