ISO 9073-13:2023

Name: ISO 9073-13:2023 — Nonwovens — Test methods — Part 13: Repeated liquid strike-through time (simulated urine)
SKU: ISO 9073-13:2023
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Nonwovens — Test methods — Part 13: Repeated liquid strike-through time (simulated urine)

Название (английский):

ISO 9073-13:2023

Nonwovens — Test methods — Part 13: Repeated liquid strike-through time (simulated urine)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 2 июня 2023 г.
Издание:: ISO IS 9073 edition 2 version 1
ICS:: 59.080.30

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Описание (английский):

This document specifies a test method for the determination of the strike-through time (STT) for each of three subsequent doses of liquid (simulated urine) applied to the surface of a test specimen of nonwoven coverstock. This test method is intended for quality control and is designed for comparison of STT for different nonwoven coverstocks. It does not simulate in-use conditions for finished products.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 9073-13:2023 - "Nonwovens - Test methods - Part 13: Repeated liquid strike-through time (simulated urine)" defines a laboratory test method to measure the strike-through time (STT) of nonwoven coverstocks. The procedure records the time for each of three successive doses of a simulated urine solution to pass through a nonwoven specimen into a standard absorbent pad. The method is intended for quality control and comparative testing between coverstock materials; it explicitly does not simulate in-use conditions of finished hygiene products.

Key topics and technical requirements

Test principle: Three successive doses of simulated urine are discharged at a prescribed rate onto a specimen resting on a reference absorbent pad; penetration time is detected conductometrically and timed electronically.

Simulated urine: 9 g/L sodium chloride solution in demineralized water with surface tension (70 ± 2) mN/m at 23 °C (check prior to testing).

Absorbent pad (blotter paper): 7 layers (100 × 100 mm), mass per unit area (139 ± 11) g/m², minimum liquid absorption capacity ≥ 480 %, and first STT ≤ 2 s when tested without a specimen.

Apparatus: Strike-through tester with a funnel/magnetic valve capable of discharging 25 mL in (3.5 ± 0.25) s; electrode plate and baseplate (transparent acrylic); conductivity detector with ~0.05 s response; threshold voltage typically ~0.150 V; timing accuracy to 0.01 s.

Calibration & verification: Includes a calibration orifice for passage-time verification (e.g., 10 mL in ~2 s) and equipment checks per Clause 9.

Sampling & conditioning: Samples conditioned per ISO 139; sampling guidance references ISO 186, ISO 2859-1, ISO 3951-1 and NWSP sampling documents.

Reporting and precision: Detailed requirements for test report content and precision data are provided; Annex A and B supply precision guidance and apparatus figures.

Practical applications - who uses this standard

Nonwovens manufacturers: routine quality control and lot-to-lot comparison of coverstock penetration performance.

Product developers / R&D: comparing alternative coverstock formulations or surface treatments for liquid handling.

Third‑party test laboratories: standardized method for contract testing of coverstock STT.

Procurement & quality assurance teams**: verifying supplier claims and acceptance testing of incoming materials. Note: Because ISO 9073-13:2023 measures laboratory strike-through under controlled conditions, results should be interpreted for material comparison rather than as a direct predictor of finished-product in-use performance.

Related standards (select)

ISO 139 - standard atmospheres for conditioning

ISO 186 - sampling to determine average quality

ISO 9092, ISO 11224 - nonwoven vocabulary / web formation terms

ISO 3696 - water for analytical use

NWSP 010.1, NWSP 005.0, NWSP 070.7 - industry guidance for nonwoven absorption and sampling

Keywords: ISO 9073-13:2023, nonwovens, strike-through time, STT, simulated urine, test method, conductometric detection, absorbent pad, quality control.

ISO 9073-13:2023

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications - who uses this standard

Related standards (select)

Технические детали

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ISO 18692-3:2020

Fibre ropes for offshore stationkeeping — Part 3: High modulus polyethylene (HMPE)

BS ISO 28591:2017

Sequential sampling plans for inspection by attributes.

BS ISO 39511:2018

Sequential sampling plans for inspection by variables for percent nonconforming (known standard deviation).

ISO 9092:2026

Nonwovens — Vocabulary

BS ISO 11224:2003

Textiles. Web formation and bonding in nonwovens. Vocabulary.

BS EN ISO 3696:1995

Water for analytical laboratory use. Specification and test methods.