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Nonwovens - Test methods - Part 11: Run-off
This document specifies test methods to measure the amount of test liquid (simulated urine) which runs down a nonwoven test specimen when a specified mass of test liquid is poured on the nonwoven test specimen superimposed on a standard absorbent medium and placed on an inclined plane.
This document is designed to compare run-off of nonwovens. It is not intended to simulate in use conditions for finished products.
The three methods are:
The test method is designed to measure the repellency of hydrophobic nonwovens. At the standard inclination angle, Option A isnt able to distinguish between different levels of hydrophobicity. By decreasing the inclination of the table, one can assess the difference in repellence of hydrophobic nonwovens.
For R&D purposes, other characteristics can be measured according to Annex D.
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