ISO/TC 38/WG 9 - Nonwovens

This document specifies a method for measuring the time of liquid (simulated urine) strike-through for nonwoven coverstocks. The method is suitable for making comparisons between different nonwoven coverstocks. It does not simulate in-use conditions for finished products.

This document specifies a method for determining the resistance to mechanical penetration of nonwoven fabrics by a ball of a given diameter. The method is primarily designed to be used on nonwovens with some degree of elasticity, for which a regular burst test does not apply.

This document specifies methods for the evaluation of some aspects of the behaviour of nonwoven fabrics in the presence of liquids. In particular: — the liquid absorbency time; — the liquid absorptive capacity; — the liquid wicking rate (capillarity). The different aspects of absorbency can relate to various end uses of the tested products. The tests do not apply to any fabric containing super absorbent materials.

This document specifies a method for determining the bending length of a nonwoven. A formula is given for calculating the flexural rigidity of the nonwoven material from the bending length. The method is not applicable to combination-type materials (composites or laminates) in which there can be a natural twist. NOTE This document describes a test method specific to nonwovens.

This document specifies a method for the determination of tear resistance of nonwovens by the trapezoid method. This document applies to nonwovens.

This document establishes a definition for the term nonwovens and provides auxiliary terminology to distinguish nonwovens from other materials.

ISO 9073-11 describes test methods for measuring the quantity of test liquid (simulated urine) which runs down a nonwoven test piece when a specified mass of test liquid is poured on to the nonwoven test piece superimposed on a standard absorbent media and placed on an inclined plane. This test method is designed to compare run-off of nonwovens. It is not intended to simulate in-use conditions of finished products. Three alternative methods are described: Test I -- the basic method for testing hydrophilic nonwovens; Test III -- the repeated test, with the same test parameters as in I); Test III -- the modified method for testing hydrophobic nonwovens specifying another table inclination than in I).