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NWSP 70.3 Liquid Strike-Through

Standard:

NWSP

Method:

NWSP 70.3

Title:

Nonwoven Coverstock Liquid Strike-Through Time Using Simulated Urine

Scope

The NWSP 70.3 Liquid Strike-Through test method measures the strike-through time, i.e. the time taken for a known volume of liquid (simulated urine) applied to the surface of a test portion of nonwoven coverstock, which is in contact with an underlying standard absorbent pad, to pass through the nonwoven. This test method is only designed to compare strike-through time of nonwoven coverstock. It is not intended to simulate in-use conditions for finished products.

Principle

A specified quantity of simulated urine is discharged at a prescribed rate under specified conditions onto a test specimen of nonwoven, which is superimposed on a reference absorbent pad. The time taken for the entire liquid dose to penetrate the nonwoven is measured electronically.

Samples

IPS uses Ahlstrom Grade 989 blotters. IPS conditions and tests at 50% RH and 23°C. IPS tests 10 specimens per sample.

 

Please note:
IPS cannot sell or otherwise provide standards, specifications, or test procedures to third parties.