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Water resistance of 1 drop 3 drop
2019/05/17
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The 1 drop, 3-drop test measures the amount of pressure it will take water to pass through a particular fabric. The test raises a water column until 1 and 3 drop appears on the underside. The higher the water column, the more pressure and therefore the better water resistance.
1、A water column is connected at its lowest point to a test fabric, and then raised to increase water pressure at the point where it meets the fabric. As the water column is raised, additional pressure is brought to bear at the point where it meets the fabric.
2、The first measurement is noted when one water drop successfully comes through the bottom of the fabric. The second measurement is taken when 3 drops of water come through the test fabric.
3、The higher the number, the more water resistant the fabric is, as it shows the fabric can withstand more pressure before leaking, making it more resistant to leaking.
4、This test measures resistance to real-world situations of water “pooling” or “puddling” on a fabric.
Drum Test：
The drum test replicates real-world scenarios where large amounts of water are pooled on awnings or covers for long periods of time. The test fabric is placed over an empty drum and secured at the edges to achieve a convex effect, creating a receptacle or bag. Water is then poured into this area and a device to capture the water is placed under the fabric to collect everything that may leak through. While this test can be run indefinitely, it is typically conducted for 24 hours.
Tap Test：
At the end of the 8 inch for 10 minute test, the fabric is knocked aggressively to "jostle" it. This simulates someone removing a cover that causes the fabric to move, thereby allowing more water to leak through. This is a non industry wide test Marlen Textiles does to mimic real world actions.
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