ISO/FDIS 9073-11
(Main)Nonwovens — Test methods — Part 11: Run-off
Nonwovens — Test methods — Part 11: Run-off
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).
Nontissés — Méthodes d'essai — Partie 11: Écoulement sur plan incliné
L'ISO 9073-11 décrit des méthodes d'essai pour mesurer la quantité de liquide d'essai (urine artificielle) s'écoulant d'une éprouvette de nontissé lorsqu'une masse spécifiée de liquide d'essai est versée sur l'éprouvette de nontissé posée sur un élément absorbant normalisé placé sur un plan incliné. Cette méthode d'essai est conçue pour comparer l'écoulement des nontissés. Elle n'est pas destinée à simuler des conditions d'utilisation de produits finis. Trois méthodes alternatives sont décrites: Essai I -- Méthode de base pour l'essai de nontissés hydrophiles. Essai II -- Essai répété, avec les mêmes paramètres d'essai que pour l'essai I. Essai III -- Méthode modifiée pour l'essai de nontissés hydrophobes spécifiant un angle du plan incliné différent que pour l'essai I.
General Information
Relations
Standards Content (Sample)
FINAL DRAFT
International
Standard
ISO/TC 38
Nonwovens — Test methods —
Secretariat: JISC
Part 11:
Voting begins on:
2025-10-31
Run-off
Voting terminates on:
Nontissés — Méthodes d'essai —
2025-12-26
Partie 11: Écoulement sur plan incliné
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 38
Nonwovens — Test methods —
Secretariat: JISC
Part 11:
Voting begins on:
Run-off
Voting terminates on:
Nontissés — Méthodes d'essai —
Partie 11: Écoulement sur plan incliné
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Conditioning . 2
5 Sampling . 2
5.1 Lot size .2
5.2 Sampling .2
5.3 Laboratory samples .3
5.4 Laboratory test specimens .3
6 Three options of the method . 3
Annex A (normative) Option A — Basic method for testing hydrophilic nonwovens. 4
Annex B (normative) Option B — The repeated test . 10
Annex C (normative) Option C — Modified method for testing hydrophobic nonwovens .13
Annex D (informative) Alternative ways of executing the run-off . 14
Bibliography .15
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 38, Textiles, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile products, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 9073-11:2002), which has been technically
revised.
The main changes are as follows:
— the title has been changed from "Textiles — Test methods for nonwovens — Part 11: Run-off" to
"Nonwovens — Test methods — Part 11: Run-off";
— In the scope, Test I to Test III have been changed to Option 1 to Option 3;
— In the scope, the text [For the research and development (R&D) purposes, other characteristics could be
measured according to Annex D] has been added;
— Clause 4, Conditioning, and Clause 5, Sampling, have been introduced in this document;
— former Clause 4 (Test I), Clause 5 (Test II) and Clause 6 (Test III), have been moved to Annex A, Annex B
and Annex C, respectively;
— the content of former Annex A have been moved to a new Annex D.
A list of all parts in the ISO 9073 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
FINAL DRAFT International Standard ISO/FDIS 9073-11:2025(en)
Nonwovens — Test methods —
Part 11:
Run-off
SAFETY WARNING — This document does not claim to address all of the safety concerns, if any,
associated with its use. It is the responsibility of the user of this document to determine appropriate
safety and health practices and determine the applicability of regulatory limitations prior to use. It is
expected that the person performing this test has been fully trained in all aspects of this procedure.
1 Scope
This document specifies a test method 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:
a) Option A - basic method for testing hydrophilic nonwovens, see Annex A.
b) Option B - repeated test, with the same test parameters as the basic method with additional information
in Option A, see Annex B.
c) Option C - modified method for testing hydrophobic nonwovens specifying another degree of incline,
see Annex C.
The test method is designed to measure the repellency of hydrophobic nonwovens. At the standard
inclination angle, Option A isn’t 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 can be measured according to Annex D.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 139, Textiles — Standard atmospheres for conditioning and testing
NWSP 010.1, Three Standard Test Methods for Nonwoven Absorption
NWSP 005.0, Nonwoven Sampling
NWSP 70.3, Nonwoven Coverstock Liquid Strike‐Through Time Using Simulated Urine
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
percent run-off
W
RO
percent mass fraction of the original mass of liquid which runs from the test specimen
3.2
run-off
m
RO
mass of excess liquid in gram that runs from the test specimen
3.3
sample
product or portion of a product taken from a production lot, identifiable and traceable back to the origin
3.4
simulated urine
testing liquid consisting of a 9 g/l solution of sodium chloride in demineralized water with a surface tension
of (70 ± 2) mN/m
3.5
test specimen
specific portion of the identified sample upon which a test is performed
Note 1 to entry: 5.2 specifies the number of test specimens needed.
4 Conditioning
Bring samples to moisture equilibrium in the standard atmosphere for testing nonwovens as directed in
ISO 139. Equilibrium is considered to have been reached when the increase in mass of the test specimen in
successive weighing made at intervals of not less than 2 hours does not exceed 0,25 % of the mass of the test
specimen.
NOTE While conditioning for a fixed time cannot be accepted in cases of dispute, it can be sufficient in routine
testing to expose the material to the standard atmosphere for testing nonwovens for a reasonable period of time
before the test specimens are tested, i.e. 4 hours.
5 Sampling
5.1 Lot size
A lot should be established based on a logical break in the process or as prescribed by a regulation or
traceability requirements.
Test specimens shall be selected in accordance with NWSP 005.0, if applicable.
5.2 Sampling
If provided in the customer specification, take random sample as directed. If no requirements are provided,
ISO 2859-1 (Sampling procedures for inspection by attributes) or ISO 3951-1 (Sampling procedures for
inspection by variables) can be used. In and of themselves, these are not valid sampling plans by default. An
agreement between the purchaser and supplier requires taking into account process stability, producer’s
risk, consumer’s risk, acceptable quality level and also the cost needs to be established.
In general, if the test characteristic can be considered normally distributed, the sampling procedures for
inspection by variables will require fewer samples. However, small samples may not reflect that normal
distribution and the estimated percent defective can therefore be over or under estimated. In this case, as
well as for attribute data, the sampling procedures for inspection by attributes should be used.
In the absence of any sampling size requirement, Table 1 and Table 2 below can be used. Switching rules are
required to maintain the acceptance quality limit (AQL) protection.
Table 1 — Attributes (1.0 AQL, General Inspection Level II)
Number of units in the lot inclusive Number of units that comprise the lot sample
1 to 150 13
151 to 280 32
281 to 500 50
501 to 1 200 80
Table 2 — Variables (“s” method, General Inspection Level II)
Number of units in the lot inclusive Number of units that comprise the lot sample
1 to 15 3
16 to 25 4
26 to 50 6
51 to 90 9
91 to 150 13
151 to 280 18
281 to 500 25
501 to 1 200 35
An adequate specification or other agreement between the purchaser and supplier requires taking into
account the variability between rolls of nonwoven fabric and between test specimens from a swatch from
a roll of material to provide a sampling plan with meaningful producer’s risk, consumer’s risk, acceptable
quality level, and limiting quality level.
Care in handling the materials shall be observed so that the final cut test specimens have not contacted any
contaminants such as soap, salt, oil etc., which might facilitate or hinder absorbency. No dirt or other foreign
material should be allowed on the test specimen; also, do not write on the test area of the test specimen.
5.3 Laboratory samples
From each roll or test specimen of fabric selected from the lot sample, cut at least one laboratory sample the
full width of the fabric and at least 300 mm from each outside edge.
5.4 Laboratory test specimens
Cut test specimens of the nonwoven, (140 ± 2) mm × (280 ± 2) mm, with the longest side in machine
direction (MD).
All three testing modifications use the same size test specimen. From Clause 6 onwards, please continue
from the respective test to be executed:
6 Three options of the method
— Option A: The basic method for testing hydrophilic nonwovens shall be in accordance with Annex A;
— Option B: The repeated test shall be in accordance with Annex B;
— Option C: Modified method for testing hydrophobic nonwovens shall be in accordance with Annex C.
Annex A
(normative)
Option A — Basic method for testing hydrophilic nonwovens
A.1 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 standard absorbent medium and placed on an
inclined table. A
...
Formatted: Left
Style Definition
ISO/DISFDIS 9073-11 : 2025(en) .
Formatted: English (United Kingdom)
ISO /TC 38/WG 9
Formatted: zzCover large
Secretariat: JISC
Formatted: Left: 1.5 cm, Right: 1.5 cm, Header
distance from edge: 1.27 cm, Footer distance from
Date: 2025-09-2610-17 edge: 1.27 cm
Formatted
...
Formatted
...
Nonwovens – — Test methods - —
Formatted: Regular, French (Switzerland)
Part 11Run-Off 11:
Formatted: Cover Title_A2
Run-off
Formatted: French (Switzerland)
Nontissés — Méthodes d'essai —
Partie 11: Écoulement sur plan incliné
FDIS stage
Formatted: Left
ISO/DIS 9073-11:2024(en)
Formatted: Left
Formatted: Default Paragraph Font
Formatted: Adjust space between Latin and Asian text,
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
Adjust space between Asian text and numbers
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Fax: +41 22 749 09 47
EmailE-mail: copyright@iso.org
Formatted: zzCopyright address, Adjust space between
Website: www.iso.orgwww.iso.org
Latin and Asian text, Adjust space between Asian text
and numbers
Published in Switzerland
Formatted: French (Switzerland)
Formatted: French (Switzerland)
Formatted: English (United Kingdom)
Formatted: Footer, Left, Space After: 0 pt, Tab stops:
Not at 17.2 cm
ii
ISO/DISFDIS 9073-11:20242025(en)
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Contents
Formatted: HeaderCentered, Left
Formatted: Font: Bold
Foreword . iv
Formatted: Adjust space between Latin and Asian text,
1 Scope . 1
Adjust space between Asian text and numbers
2 Normative references . 1
3 Terms and definitions . 2
4 Conditioning . 2
5 Sampling . 2
6 Three options of the method . 4
Annex A (normative) Option A — Basic method for testing hydrophilic nonwovens . 5
Annex B (normative) Option B — The repeated test . 12
Annex C (normative) Option C — Modified method for testing hydrophobic nonwovens . 16
Annex D (informative) Alternative ways of executing the run-off . 18
Bibliography . 19
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Conditioning . 2
5 Sampling . 3
6 The three options of the method . 4
Annex A (informative) Alternative ways of executing the run-off . 15
Formatted: Font: 10 pt
Formatted: Font: 10 pt
Formatted: FooterCentered, Left, Space Before: 0 pt,
Tab stops: Not at 17.2 cm
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Left, Space
After: 0 pt, Tab stops: Not at 17.2 cm
iii
Formatted: HeaderCentered
Formatted: Font: Bold
Foreword Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Formatted: English (United Kingdom)
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
Formatted: English (United Kingdom)
This document was prepared by Technical Committee ISO/TC 38, Textiles, in collaboration with the European
Formatted: Font: Not Italic
Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile products, in
Formatted: Font: Not Italic
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 9073-11:2002), which has been technically
Formatted: Adjust space between Latin and Asian text,
revised. Adjust space between Asian text and numbers
Formatted: Default Paragraph Font
The main changes are as follows:
Formatted: Default Paragraph Font
— — Title wasthe title has been changed from ["Textiles -]— Test methods for nonwovens — Part 11: Run-
Formatted: Default Paragraph Font
off" to ["Nonwovens -]— Test methods — Part 11: Run-off";
Formatted: Default Paragraph Font
— — In the scope, Test I to Test III werehave been changed to Option 1 to Option 3.; Formatted: Space After: 0 pt, Adjust space between
Latin and Asian text, Adjust space between Asian text
— In the scope, the text [For the research and development (R&D) purposes, other characteristics could be and numbers, Tab stops: Not at 2.1 cm + 2.8 cm + 3.5
cm + 4.2 cm + 5.6 cm + 6.3 cm + 7 cm
measured according to Annex D] was added.Annex D] has been added;
— 44, Conditioning, and 55, Sampling were, have been introduced in this document.;
— former Clause 4 (Test I, ), Clause 5 (Test II) and Clause 6 (Test III were), have been moved to Annex A,
Annex BAnnex A, Annex B and Annex C in this document.Annex C, respectively;
— Annex A was moved to Annex D.
Formatted: FooterCentered, Space Before: 0 pt, Line
spacing: single
— the content of former Annex A have been moved to a new Annex D.
Formatted: FooterPageRomanNumber
iv © ISO 2021 2025 – All rights reserved
iv
ISO/DISFDIS 9073-11:20242025(en)
Formatted: Font: 11 pt, Bold
Formatted: HeaderCentered, Left
Formatted: Font: 11 pt, Bold
A list of all parts in the ISO 9073 series can be found on the ISO website.
Formatted: Font: 11 pt, Bold
Any feedback or questions on this document should be directed to the user’s national standards body. A
Formatted: Font: Bold
complete listing of these bodies can be found at www.iso.org/members.html.
Formatted: Default Paragraph Font
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
Formatted: English (United Kingdom)
Field Code Changed
Formatted: Font: 10 pt
Formatted: Font: 10 pt
Formatted: FooterCentered, Left, Space Before: 0 pt,
Tab stops: Not at 17.2 cm
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Left, Space
After: 0 pt, Tab stops: Not at 17.2 cm
v
DRAFT International Standard ISO/DIS 9073-11:2024(en)
Nonwovens – — Test methods - —
Formatted: Main Title 2, Adjust space between Latin
Part 11:
and Asian text, Adjust space between Asian text and
Run-Offoff
numbers
SAFETY WARNING –— This document does not claim to address all of the safety concerns, if any,
associated with its use. It is the responsibility of the user of this document to determine appropriate
safety and health practices and determine the applicability of regulatory limitations prior to use. It is
expected that the person performing this test has been fully trained in all aspects of this procedure.
1 Scope
This document specifies a test method 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:
a) a) Option A - basic method for testing hydrophilic nonwovens, see Annex A.Annex A.
Formatted: Numbered + Level: 1 + Numbering Style: a,
b, c, … + Start at: 1 + Alignment: Left + Aligned at: 0
b) b) Option B - repeated test, with the same test parameters as the basic method with additional
cm + Indent at: 0 cm, Adjust space between Latin and
information in Option A, see Annex B.Annex B. Asian text, Adjust space between Asian text and
numbers, Tab stops: Not at 0.7 cm + 1.4 cm + 2.1 cm
c) c) Option C - modified method for testing hydrophobic nonwovens specifying another degree of + 2.8 cm + 3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3
cm + 7 cm
incline, see Annex C.Annex C.
The test method is designed to measure the repellency of hydrophobic nonwovens. At the standard inclination
angle, Option A isn’t 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 couldcan can be measured according to Annex D.Annex D.
2 Normative references
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references, Formatted: Default Paragraph Font
the latest edition of the referenced document (including any amendments) applies.
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
ISO 139, Textiles — Standard atmospheres for conditioning and testing
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
NWSP 010.1, Three Standard Test Methods for Nonwoven Absorption
Formatted: Default Paragraph Font
NWSP 005.0, Nonwoven Sampling
Formatted: Default Paragraph Font, Font: Italic
Formatted: Font: Not Italic
NWSP 70.3, Nonwoven Coverstock Liquid Strike‐Through Time Using Simulated Urine
Formatted: Footer, Left, Space After: 0 pt, Tab stops:
Not at 17.2 cm
Formatted: HeaderCentered
Formatted: Font: Bold
3 Terms and definitions
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
— — IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
3.1 3.1
Formatted: TermNum2, Adjust space between Latin
percent run-off
and Asian text, Adjust space between Asian text and
W
RO
numbers
percent mass fraction of the original mass of liquid which runs from the test specimen
Formatted: Not Superscript/ Subscript
3.2 3.2
run-off
m
RO
mass of excess liquid in gram that runs from the test specimen
3.3 3.3
sample
product or portion of a product taken from a production lot, identifiable and traceable back to the origin
3.4 3.4
simulated urine
testing liquid consisting of a 9 g/l solution of sodium chloride in demineralized water with a surface tension
of (70 ± 2) mN/m
3.5 3.5
test specimen
specific portion of the identified sample upon which a test is performed
Note 1 to entry: 7.2 5.2 specifies the number of test specimens needed.
4 Conditioning
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
Bring samples to moisture equilibrium in the standard atmosphere for testing nonwovens as directed in ISO
Formatted: Default Paragraph Font
139. Equilibrium is considered to have been reached when the increase in mass of the test specimen in
Formatted: Default Paragraph Font
successive weighing made at intervals of not less than 2 hours does not exceed 0,25 % of the mass of the test
specimen.
NOTE While conditioning for a fixed time cannot be accepted in cases of dispute, it can be sufficient in routine testing
Formatted: Adjust space between Latin and Asian text,
to expose the material to the standard atmosphere for testing nonwovens for a reasonable period of time before the test
Adjust space between Asian text and numbers, Tab
specimens are tested, i.e. 4 hours.
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
5 Sampling
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
5.1 Lot size
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
A lot should be established based on a logical break in the process or as prescribed by a regulation or
stops: Not at 0.71 cm
traceability requirements.
Formatted: Adjust space between Latin and Asian text,
Test specimens shall be selected in accordance with NWSP 005.0, if applicable. Adjust space between Asian text and numbers
Formatted: FooterPageNumber
ISO/DISFDIS 9073-11:20242025(en)
Formatted: Font: 11 pt, Bold
Formatted: HeaderCentered, Left
Formatted: Font: Bold
5.2 Sampling
Formatted: Font: 11 pt, Bold
If provided in the customer specification, take random sample as directed. If no requirements are provided,
Formatted: Font: 11 pt, Bold
ISO 2859-1 (Sampling procedures for inspection by attributes) or ISO 3951-1 (Sampling procedures for
Formatted
...
inspection by variables) can be used. In and of themselves, these are not valid sampling plans by default. An
Formatted
agreement between the purchaser and supplier requires taking into account process stability, producer’s risk,
...
consumer’s risk, acceptable quality level and also the cost needs to be established.
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
In general, if the test characteristic can be considered normally distributed, the sampling procedures for
inspection by variables will require fewer samples. However, small samples may not reflect that normal Formatted: Default Paragraph Font
distribution and the estimated percent defective can therefore be over or under estimated. In this case, as well
Formatted: Default Paragraph Font
as for attribute data, the sampling procedures for inspection by attributes should be used.
Formatted: Default Paragraph Font
In the absence of any sampling size requirement, Table 1 and Table 20 and 0 below can be used. Switching
Formatted: Default Paragraph Font
rules are required to maintain the acceptance quality limit (AQL) protection.
Table 1 — Attributes (1.0 AQL, General Inspection Level II)
Formatted
...
Number of units in the lot inclusive Number of units that comprise the lot sample
Formatted
...
1 to 150 13
Formatted Table
151 to 280 32
Formatted: Font: Not Bold, Font color: Auto
281 to 500 50
Formatted: Font: Not Bold, Font color: Auto
501 to 1 200 80
Formatted
...
Table 2 — Variables (“s” method, General Inspection Level II)
Formatted
...
Formatted: Font color: Auto
Number of units in the lot inclusive Number of units that comprise the lot sample
Formatted: Font color: Auto
1 to 15 3
Formatted
16 to 25 4
...
26 to 50 6
Formatted
...
51 to 90 9
Formatted Table
91 to 150 13
Formatted: Font: Not Bold, Font color: Auto
151 to 280 18
Formatted
...
281 to 500 25
Formatted: Font: Not Bold, Font color: Auto
501 to 1 200 35
Formatted
...
Formatted: Font color: Auto
An adequate specification or other agreement between the purchaser and supplier requires taking into
Formatted: Font color: Auto
account the variability between rolls of nonwoven fabric and between test specimens from a swatch from a
roll of material to provide a sampling plan with meaningful producer’s risk, consumer’s risk, acceptable quality
Formatted
...
level, and limiting quality level.
Care in handling the materials shall be observed so that the final cut test specimens have not contacted any
Formatted
...
contaminants such as soap, salt, oil etc., which might facilitate or hinder absorbency. No dirt or other foreign
material should be allowed on the test specimen; also, do not write on the test area of the test specimen.
Formatted
...
Formatted
...
5.3 Laboratory samples
Formatted: Font: 10 pt
From each roll or test specimen of fabric selected from the lot sample, cut at least one laboratory sample the
Formatted: Font: 10 pt
full width of the fabric and at least 300 mm from each outside edge.
Formatted
...
Formatted: Font: 11 pt
Formatted
...
Formatted: HeaderCentered
Formatted: Font: Bold
5.4 Laboratory test specimens
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
Cut test specimens of the nonwoven, (140 ± 2) mm x × (280 ± 2) mm, with the longest side in machine
stops: Not at 0.71 cm
direction (MD).
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
All three testing modifications use the same size test specimen. From section 6From 6 onwards, please
continue from the respective test to be executed:
6 Three options of the method
— — Option A: The basic method for testing hydrophilic nonwovens, shall be in accordance with Annex
Formatted: Adjust space between Latin and Asian text,
A;Annex A;
Adjust space between Asian text and numbers, Tab
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
— — Option B: The repeated test shall be in accordance with Annex B;Annex B;
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
— — Option C: Modified method for testing hydrophobic nonwovens shall be in accordance with Annex
C.Annex C.
Formatted: FooterPageNumber
ISO/DISFDIS 9073-11:20242025(en)
Formatted: Font: 11 pt, Bold
Formatted: HeaderCentered, Left
Formatted: Font: 11 pt, Bold
Annex A
Formatted: Font: 11 pt, Bold
Formatted: Font: Bold
(normative)
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
Option A –— Basic method for testing hydrophilic nonwovens
Formatted: Annex Heading_Line 2, Font: Not Bold
Formatted: Annex Heading_Line 2
Formatted: Annex Heading_Line 2, Font: Not Bold
A.1 Principle
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
A specified quantity of simulated urine is discharged at a prescribed rate under specified conditions onto a
stops: Not at 0.63 cm
test specimen of nonwoven which is superimposed on a standard absorbent medium and placed on an inclined
table. Any excess liquid that runs down the test specimen is collected by a standard receiver pad placed below
Formatted: Adjust space between Latin and Asian text,
the lower end of the nonwoven test specimen. Adjust space between Asian text and numbers
The run-off measures the mass of liquid collected by the standard receiver pad.
A.2 Reagents and materials
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
Use reagents of recognized analytical grade, unless otherwise specified, and demineralized water.
stops: Not at 0.63 cm
Formatted: Adjust space between Latin and Asian text,
A.2.1 Standard absorbent medium/pad (blotter paper)
Adjust space between Asian text and numbers
Formatted: Adjust space between Latin and Asian text,
The absorbent medium/pad consists of 2 layers of blotter paper, (140 ± 1) mm x× (275 ± 1) mm, with the
Adjust space between Asian text and numbers, Tab
longer side in the MD and the smooth side up.
stops: Not at 1.27 cm
The smooth side is determined and indicated by the producer’s label, it is generally the side in contact with Formatted: Font: Not Bold
the conveyor wire during the production process, where the wire mark may be visible.
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
The blotter paper shall meet the following specifications.
a) a) The mass per unit area of paper shall be (139 ± 11) g/m .
Formatted: Numbered + Level: 1 + Numbering Style: a,
b, c, … + Start at: 1 + Alignment: Left + Aligned at: 0
b) b) The liquid absorption capacity, of the paper, as determined by NWSP 010.1, shall be at least
cm + Indent at: 0 cm, Adjust space between Latin and
480 %. Asian text, Adjust space between Asian text and
numbers, Tab stops: Not at 0.7 cm + 1.4 cm + 2.1 cm
c) c) The mean strike-through time shall be 3 seconds or less, using test procedure NWSP 70.3, but + 2.8 cm + 3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3
without a test sample cm + 7 cm
d) d) Two layers of the blotter cut to the size above shall fully absorb (25 ± 0,5) g mass of test liquid
Formatted: Adjust space between Latin and Asian text,
in (3,5 ± 0,5) s.
Adjust space between Asian text and numbers, Tab
stops: Not at 1.27 cm
NOTE Information concerning a potential source of suitable blotter paper can be obtained from the nonwovens
Formatted: Font: Not Bold
industry associations such as:
Formatted: Adjust space between Latin and Asian text,
EDANA, www.edana.orgwww.edana.org or look directly at the test method webpage
Adjust space between Asian text and numbers
Formatted: Font: 10 pt
INDA, www.inda.org
Formatted: Font: 10 pt
INDA, www.inda.org
Formatted: FooterCentered, Left, Space Before: 0 pt,
Tab stops: Not at 17.2 cm
A.2.2 Standard receiver pad
Formatted: Font: 11 pt
The absorbing paper (same dimensions as the absorbent medium/pad) is to collectcollects excess test liquid
Formatted: FooterPageNumber, Left, Space After: 0 pt,
that runs down and off the test specimen, e.g. 2 layers of filter/blotter papers.
Tab stops: Not at 17.2 cm
Formatted: HeaderCentered
Formatted: Font: Bold
NOTE The receiver pad can be replaced by a receiver trough, see Annex C .Annex C.
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
A.2.3 Simulated urine
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
A.2.3 Consisting, consisting of a 9 g/l solution of sodium chloride in water with a surface tension of
Formatted: a3, Adjust space between Latin and Asian
(70 ± 2) mN/m. This surface tension should be checked before each series of tests, as it can alter during
text, Adjust space between Asian text and numbers
storage.
Formatted: Font: Not Bold
The surface tension of adult human urine is published as 69 mN/m to 70 mN/m. Some babies’ urine can have
Formatted: Body Text, Adjust space between Latin and
a lower surface tension (e.g. 45 mN/m). The surface tension of the simulated urine can be adjusted by the
Asian text, Adjust space between Asian text and
addition of a surfactant. In this case, it should be reported as a deviation from standard procedure and the
numbers, Tab stops: Not at 0.7 cm + 1.4 cm + 2.1 cm
surface tension should be stated in the test report.
+ 2.8 cm + 3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3
cm + 7 cm
A.3 Apparatus
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
A.3.1 A.3.1 Run-off table, made of acrylic glass or similar as shown in Figure A.1:0.
stops: Not at 0.63 cm
Formatted: a3
a) a) Table marked with two reference black lines at (250 ± 0,2) mm distance (see Figure A.2).0).
Formatted: Font: Not Bold
The lower line, (3 ± 0,2) mm from the lower end of the table, defines the position of the lower end of the
Formatted: Font: Not Bold
absorbent medium.
Formatted: Numbered + Level: 1 + Numbering Style: a,
b, c, … + Start at: 1 + Alignment: Left + Aligned at: 0
The upper line defines the position of the discharge tube axis (approximately 25 mm from the upper end of
cm + Indent at: 0 cm, Adjust space between Latin and
the test specimen).
Asian text, Adjust space between Asian text and
numbers, Tab stops: Not at 0.7 cm + 1.4 cm + 2.1 cm
b) b) Table has an incline of (25º ± 10’) angle.
+ 2.8 cm + 3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3
cm + 7 cm
c) c) Clip or similar with symmetrical reference marks at (140 ± 0,2) mm (to adjust the axial
Formatted: Adjust space between Latin and Asian text,
position of the test specimen).
Adjust space between Asian text and numbers
d) d) Spirit level (to ensure axial discharge of the tube).
Formatted: Numbered + Level: 1 + Numbering Style: a,
b, c, … + Start at: 2 + Alignment: Left + Aligned at: 0
e) e) Support for placing the standard receiver pad below the lower end of the test specimen.
cm + Indent at: 0 cm, Adjust space between Latin and
Asian text, Adjust space between Asian text and
A.3.2 A.3.2 Glass tube, with an internal diameter of 5 mm. numbers, Tab stops: Not at 0.7 cm + 1.4 cm + 2.1 cm
+ 2.8 cm + 3.5 cm + 4.2 cm
...
PROJET FINAL
Norme
internationale
ISO/TC 38
Nontissés — Méthodes d'essai —
Secrétariat: JISC
Partie 11:
Début de vote:
2025-10-31
Écoulement sur plan incliné
Vote clos le:
Nonwovens — Test methods —
2025-12-26
Part 11: Run-off
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
INTERNATIONALES DOIVENT PARFOIS ÊTRE CONSIDÉRÉS
DU POINT DE VUE DE LEUR POSSI BILITÉ DE DEVENIR DES
NORMES POUVANT
SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
Numéro de référence
PROJET FINAL
Norme
internationale
ISO/TC 38
Nontissés — Méthodes d'essai —
Secrétariat: JISC
Partie 11:
Début de vote:
Écoulement sur plan incliné 2025-10-31
Vote clos le:
Nonwovens — Test methods —
2025-12-26
Part 11: Run-off
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
DOCUMENT PROTÉGÉ PAR COPYRIGHT
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
© ISO 2025 INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
INTERNATIONALES DOIVENT PARFOIS ÊTRE CONSIDÉRÉS
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
DU POINT DE VUE DE LEUR POSSI BILITÉ DE DEVENIR DES
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
NORMES POUVANT
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse Numéro de référence
ii
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 2
4 Conditionnement . 2
5 Échantillonnage . 2
5.1 Taille du lot . .2
5.2 Échantillonnage .3
5.3 Échantillons pour laboratoire .3
5.4 Éprouvettes de laboratoire .4
6 Trois options pour la méthode d’essai. 4
Annexe A (normative) Option A — Méthode de base pour l’essai de nontissés hydrophiles . 5
Annexe B (normative) Option B — Essai répété .11
Annexe C (normative) Option C — Méthode modifiée pour l’essai de nontissés hydrophobes . 14
Annexe D (informative) Autres modes d’exécution de l’essai d’écoulement sur plan incliné .15
Bibliographie .16
iii
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes nationaux
de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est en général
confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l’ISO participent également aux travaux. L’ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document
a été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2
(voir www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité de
tout droit de brevet revendiqué à cet égard. À la date de publication du présent document, l’ISO n’avait pas
reçu notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois,
il y a lieu d’avertir les responsables de la mise en application du présent document que des informations
plus récentes sont susceptibles de figurer dans la base de données de brevets, disponible à l’adresse
www.iso.org/brevets. L’ISO ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits de
brevet et averti de leur existence.
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l’ISO liés à l’évaluation de la conformité, ou pour toute information au sujet de l’adhésion de
l’ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir www.iso.org/avant-propos.
Le présent document a été élaboré par le comité ISO/TC 38, Textiles, en collaboration avec le comité technique
CEN/TC 248, Textiles et produits textiles, du Comité européen de normalisation (CEN), conformément à
l’Accord de coopération technique entre l’ISO et le CEN (Accord de Vienne).
Cette deuxième édition annule et remplace la première édition (ISO 9073-11:2002), qui a fait l’objet d’une
révision technique.
Les principales modifications sont les suivantes:
— le titre «Textiles — Méthodes d’essai pour nontissés — Partie 11: Écoulement sur plan incliné» a été
remplacé par «Nontissés — Méthodes d’essai — Partie 11: Écoulement sur plan incliné»;
— dans le Domaine d’application, les mentions Essai I à Essai III ont été remplacées par Option 1 à Option 3;
— dans le Domaine d’application, le texte [À des fins de recherche et de développement, d’autres caractéristiques
pourraient être mesurées conformément à l’Annexe D] a été ajouté;
— l’Article 4, Conditionnement, et l’Article 5, Échantillonnage, ont été intégrés au présent document;
— les précédents Article 4 (Essai I), Article 5 (Essai II) et Article 6 (Essai III), ont été respectivement
déplacés dans l’Annexe A, l’Annexe B et l’Annexe C;
— le contenu de la précédente Annexe A a été déplacé dans la nouvelle Annexe D.
Une liste de toutes les parties de la série ISO 9073 se trouve sur le site web de l’ISO.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/fr/members.html.
iv
PROJET FINAL Norme internationale ISO/FDIS 9073-11:2025(fr)
Nontissés — Méthodes d'essai —
Partie 11:
Écoulement sur plan incliné
AVERTISSEMENT DE SÉCURITÉ — Le présent document n’a pas pour but de traiter tous les problèmes
de sécurité qui sont, le cas échéant, liés à son utilisation. Il incombe à l’utilisateur du présent
document d’établir, avant de l’utiliser, des pratiques d’hygiène et de sécurité appropriées et de
déterminer l’applicabilité des restrictions réglementaires. Il est attendu que la personne qui effectue
cet essai ait été entièrement formée à tous les aspects du présent mode opératoire.
1 Domaine d’application
Le présent document spécifie une méthode d’essai permettant de mesurer la quantité de liquide d’essai
(urine artificielle) s’écoulant d’une éprouvette de nontissé lorsqu’une masse spécifiée de liquide d’essai est
versée sur l’éprouvette de nontissé posée sur un élément absorbant normalisé placé sur un plan incliné.
Le présent document est conçu pour comparer l’écoulement des nontissés. Il n’est pas destiné à simuler les
conditions d’utilisation de produits finis.
Les trois méthodes sont les suivantes:
a) Option A, méthode de base pour l’essai de nontissés hydrophiles, voir l’Annexe A;
b) Option B, essai répété, avec les mêmes paramètres d’essai que la méthode de base et des informations
supplémentaires, voir l’Annexe B;
c) Option C, méthode modifiée pour l’essai de nontissés hydrophobes avec spécification d’un degré
d’inclinaison différent, voir l’Annexe C.
La méthode d’essai est conçue pour mesurer le degré d’hydrophobie des nontissés hydrophobes. À l’angle
d’inclinaison standard, l’option A n’est pas en mesure de différencier les différents niveaux d’hydrophobie.
En diminuant l’inclinaison de la table, il est possible d’évaluer la différence d’hydrophobie des nontissés
hydrophobes.
À des fins de recherche et de développement, d’autres caractéristiques peuvent être mesurées conformément
à l’Annexe D.
2 Références normatives
Les documents suivants sont cités dans le texte de sorte qu’ils constituent, pour tout ou partie de leur
contenu, des exigences du présent document. Pour les références datées, seule l’édition citée s’applique. Pour
les références non datées, la dernière édition du document de référence s’applique (y compris les éventuels
amendements).
ISO 139, Textiles — Atmosphères normales de conditionnement et d'essai
NWSP 010.1, Three Standard Test Methods for Nonwoven Absorption
NWSP 005.0, Nonwoven Sampling
NWSP 70.3, Nonwoven Coverstock Liquid Strike-Through Time Using Simulated Urine
3 Termes et définitions
Pour les besoins du présent document, les termes et définitions suivants s’appliquent.
L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en normalisation,
consultables aux adresses suivantes:
— ISO Online browsing platform: disponible à l’adresse https:// www .iso .org/ obp
— IEC Electropedia: disponible à l’adresse https:// www .electropedia .org/
3.1
pourcentage d’écoulement
W
RO
fraction massique en pourcentage de la masse initiale de liquide qui s’écoule de l’éprouvette
3.2
écoulement
m
RO
masse d’excès de liquide, exprimée en grammes, qui s’écoule de l’éprouvette
3.3
échantillon
produit ou partie d’un produit prélevé(e) à partir d’un lot de production, identifiable et avec suivi depuis
son origine
3.4
urine artificielle
liquide d’essai, composé d’une solution de chlorure de sodium à 9 g/l dans de l’eau déminéralisée, avec une
tension superficielle de (70 ± 2) mN/m
3.5
éprouvette
partie spécifique de l’échantillon identifié qui est soumise à essai
Note 1 à l'article: 5.2 spécifie le nombre d’éprouvettes nécessaires.
4 Conditionnement
Amener les échantillons à un état d’équilibre en matière d’humidité dans l’atmosphère normale d’essai des
nontissés conformément à l’ISO 139. L’équilibre est considéré comme atteint lorsque l’augmentation de
masse de l’éprouvette observée lors de pesées successives effectuées à des intervalles d’au moins 2 h ne
dépasse pas 0,25 % de la masse de l’éprouvette.
NOTE Bien que le conditionnement pendant une durée déterminée ne puisse pas être accepté en cas de litige, il
peut suffire, lors des essais de routine, d’exposer le matériau à l’atmosphère normale d’essai des nontissés pendant une
durée raisonnable avant l’essai des éprouvettes, c’est-à-dire 4 h.
5 Échantillonnage
5.1 Taille du lot
Il convient d’établir un lot sur la base d’une rupture logique du processus ou selon les prescriptions d’un
règlement ou d’exigences de traçabilité.
Les éprouvettes doivent être sélectionnées conformément à NWSP 005.0, le cas échéant.
5.2 Échantillonnage
Si cela est précisé dans les spécifications du client, prélever un échantillon aléatoire suivant les indications.
En l’absence d’exigences, l’ISO 2859-1 (Règles d’échantillonnage pour les contrôles par attributs) ou
l’ISO 3951-1 (Règles d’échantillonnage pour les contrôles par mesures) peut être utilisée. Il ne s’agit pas,
par défaut, de plans d’échantillonnage valides. Un accord entre l’acheteur et le fournisseur exige de tenir
compte de la stabilité du procédé, du risque fournisseur, du risque consommateur, du niveau de qualité
acceptable, et les coûts doivent également être établis.
En général, si la caractéristique de l’essai peut être considérée comme normalement répartie, les modes
opératoires d’échantillonnage pour le contrôle par mesures exigeront moins d’échantillons. Cependant, il
se peut qu’un nombre limité d’échantillons ne reflète pas cette distribution normale et que le pourcentage
estimé d’échantillons défectueux soit, en conséquence, surestimé ou sous-estimé. Dans ce cas, ainsi que pour
les données d’attributs, il convient d’utiliser les modes opératoires d’échantillonnage pour les contrôles par
attributs.
En l’absence d’exigence relative à la taille d’échantillonnage, le Tableau 1 et le Tableau 2 ci-dessous peuvent
être utilisés. Des règles de modification du contrôle sont exigées pour maintenir la protection du niveau de
qualité acceptable (NQA).
Tableau 1 — Attributs (1.0 NQA, niveau d’inspection générale II)
Nombre d’unités dans le lot — inclusivement Nombre d’unités y compris l’échantillon du lot
1 à 150 13
151 à 280 32
281 à 500 50
501 à 1 200 80
Tableau 2 — Variables (méthode «s», niveau d’inspection générale II)
Nombre d’unités dans le lot — inclusivement Nombre d’unités y compris l’échantillon du lot
1 à 15 3
16 à 25 4
26 à 50 6
51 à 90 9
91 à 150 13
151 à 280 18
281 à 500 25
501 à 1 200 35
Une spécification adéquate ou tout autre accord entre l’acheteur et le fournisseur exige de tenir compte de
la variabilité entre les bobines de nontissé et entre les éprouvettes prélevées dans un coupon de bobine
de matériau afin de fournir un plan d’échantillonnage caractérisé par un risque fournisseur, un risque
consommateur, un niveau de qualité acceptable et un niveau de qualité limite significatifs.
Il faut prêter attention à la manipulation des matériaux de sorte que les éprouvettes découpées finales
n’entrent pas en contact avec des contaminants tels que du savon, du sel, de l’huile, etc., susceptibles de
faciliter ou d’entraver l’absorption. Il convient qu’aucune saleté ou qu’aucun autre corps étranger ne se
trouve sur l’éprouvette. De même, ne pas écrire sur la zone d’essai de l’éprouvette.
5.3 Échantillons pour laboratoire
Dans chaque bobine ou éprouvette d’étoffe prélevée dans l’échantillon de lot, découper au moins un
échantillon pour laboratoire sur la pleine largeur de l’étoffe et à 300 mm minimum de chaque bord extérieur.
5.4 Éprouvettes de laboratoire
Découper des éprouvettes de nontissé, de (140 ± 2) mm x (280 ± 2) mm, avec le côté le plus long dans le sens
machine (MD).
Les trois variantes d’essai utilisent la même taille d’éprouvette. À partir de l’Article 6, sélectionner une
méthode d’essai et consulter l’annexe qui lui correspond.
6 Trois options pour la méthode d’essai
— Option A: la méthode de base pour l’essai de nontissés hydrophiles doit être conforme à l’Annexe A;
— Option B: l’essai répété doit être conforme à l’Annexe B;
— Option C: la méthode modifiée pour l’essai de nontissés hydrophobes doit être conforme à l’Annexe C.
Annexe A
(normative)
Option A — Méthode de base pour l’essai de nontissés hydrophiles
A.1 Principe
Une quantité déterminée d’urine artificielle est déversée à un débit prescrit et dans des conditions spécifiées
sur une éprouvette de nontissé posée sur un élément absorbant normalisé placé sur un plan incliné. Tout le
liquide en excès s’écoulant de l’éprouvette est recueilli par un tampon de collecte normalisé disposé sous
l’extrémité inférieure de l’éprouvette de nontissé.
L’écoulement est la mesure de la masse
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...