General Information

Abstract

This document specifies two methods for the determination of the tear strength of flexible cellular polymeric materials: — method A, using a trouser test piece; — method B, using an angle test piece without a nick.

Status
Not Published
Current Stage
6000 - International Standard under publication
Start Date
12-Aug-2026
Completion Date
29-Aug-2026

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Overview

ISO 8067: Flexible Cellular Polymeric Materials - Determination of Tear Strength specifies two standardized methods for assessing the tear strength of flexible cellular polymeric materials, such as polyurethane foams and rubber-based foams. These materials are widely used in industries like automotive, furniture, construction, and packaging, where consistent mechanical performance and durability are critical. By providing repeatable procedures and terminology, ISO 8067 helps manufacturers, quality assurance teams, and testing laboratories ensure product reliability and compliance with international best practices.

Key Topics

  • Tear Strength Definition: Tear strength is the maximum force per unit thickness observed when stretching a test piece to rupture. It is a key indicator of material resistance to tearing forces and overall durability.
  • Test Methods:
    • Method A (Trouser Test Piece): Utilizes a test piece shaped like a pair of trousers, torn with the applied force perpendicular to the foam-rise direction.
    • Method B (Angle Test Piece): Uses a V-shaped angle piece, torn without a pre-made nick, also perpendicular to the foam-rise direction.
  • Test Piece Preparation: Test specimens must be cut free of voids and flow lines, and may be tested with or without the original skin. Sample orientation relative to cellular structure is specified to ensure reproducible results.
  • Conditioning: Test pieces are conditioned for at least 16 hours at controlled temperature and humidity. For routine quality tests, shorter conditioning times may be permissible.
  • Measurement and Reporting: Tear strength is calculated in newtons per centimetre (N/cm), and results are typically reported as the median of three test pieces. Deviations and conditioning details must be documented.

Applications

The ISO 8067 standard is crucial for:

  • Quality Control: Manufacturers verify that flexible foams meet required tear resistance thresholds for their intended applications.
  • Product Development: Material engineers use standardized tests to compare different foam formulations and select those offering optimal performance.
  • Supply Chain Assurance: Buyers and suppliers rely on standardized tear strength testing to ensure that materials supplied across regions or vendors are consistent.
  • Regulatory Compliance: Many industries require components to comply with international standards for product safety, durability, and performance.
  • Research and Benchmarking: Comparative testing enables industry and research bodies to benchmark materials and improve existing products.

Related Standards

For organizations applying ISO 8067, the following standards and documents are also relevant:

  • ISO 1923 - Cellular plastics and rubbers - Determination of linear dimensions
  • ISO 7500-1 - Metallic materials - Calibration and verification of static uniaxial testing machines
  • ISO/TR 9272 - Precision of test methods - Guidance for the determination of repeatability and reproducibility

Practical Value

Implementing ISO 8067 ensures consistent, reliable determination of tear strength in flexible cellular polymeric materials. This enhances:

  • Product performance by validating resistance to mechanical stress and wear
  • Customer confidence in the durability and safety of end-use foam products
  • Process optimization by providing clear methods for comparing the effects of different formulations or processing conditions

By using ISO 8067, organizations streamline quality assurance, reduce material waste, and facilitate international trade through standardized compliance for foam tear strength testing.

Relations

Effective Date
12-Feb-2026
Effective Date
16-Mar-2024
Effective Date
09-Mar-2024

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ISO/PRF 8067 - Flexible cellular polymeric materials — Determination of tear strength

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ISO/PRF 8067 - Matériaux polymères alvéolaires souples — Détermination de la résistance au déchirement

Release Date:31-Jul-2026
French language (12 pages)
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Frequently Asked Questions

ISO 8067 is a draft published by the International Organization for Standardization (ISO). Its full title is "Flexible cellular polymeric materials — Determination of tear strength". This standard covers: This document specifies two methods for the determination of the tear strength of flexible cellular polymeric materials: — method A, using a trouser test piece; — method B, using an angle test piece without a nick.

This document specifies two methods for the determination of the tear strength of flexible cellular polymeric materials: — method A, using a trouser test piece; — method B, using an angle test piece without a nick.

ISO 8067 is classified under the following ICS (International Classification for Standards) categories: 83.100 - Cellular materials. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 8067 has the following relationships with other standards: It is inter standard links to prEN ISO 8067, ISO/IEC 3532-2:2024, ISO 8067:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO 8067 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


International
Standard
Fourth edition
Flexible cellular polymeric
materials — Determination of tear
strength
Matériaux polymères alvéolaires souples — Détermination de la
résistance au déchirement
PROOF/ÉPREUVE
Reference number
© ISO 2026
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication 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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 1
5 Test pieces . 2
5.1 General .2
5.2 Trouser test piece for method A .2
5.3 Angle test piece for method B .3
6 Number of test pieces . 4
7 Conditioning . 4
8 Procedure . 5
8.1 General .5
8.2 Method A .5
8.3 Method B .6
9 Expression of results . 6
10 Test report . 6
Annex A (informative) Precision comparison for the two types of test piece. 8
Bibliography .10
PROOF/ÉPREUVE
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 45, Rubber and rubber products, Subcommittee
SC 4, Products (other than hoses), in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 8067:2018), which has been technically
revised.
The main change is as follows:
— addition of information regarding the location and number of surfaces with skin in Clause 10.
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.
PROOF/ÉPREUVE
iv
International Standard ISO 8067:2026(en)
Flexible cellular polymeric materials — Determination of tear
strength
WARNING — Persons using this document should be familiar with normal laboratory practice. This
document does not purport to address all the safety problems, if any, associated with its use. It is the
responsibility of the user of this document to establish appropriate safety and health practices and
to determine the applicability of any national regulatory conditions.
1 Scope
This document specifies two methods for the determination of the tear strength of flexible cellular polymeric
materials:
— Method A, using a trouser test piece;
— Method B, using an angle test piece without a nick.
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 1923, Cellular plastics and rubbers — Determination of linear dimensions
ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines — Part 1:
Tension/compression testing machines — Calibration and verification of the force-measuring system
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology 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
tear strength
R
maximum force per unit thickness observed when stretching a test piece to rupture
4 Apparatus
The tear strength shall be measured on a tensile-testing machine which will indicate the force at which
rupture of the test piece takes place. The accuracy of the test machine shall be of class 2 or higher, as
specified in ISO 7500-1. Either 4.1 or 4.2 should be used.
4.1 Automatic machine, which draws the actual curve.
PROOF/ÉPREUVE
4.2 Stylus or scale, having an indicator that remains at the point of maximum force after rupture of the
test piece.
5 Test pieces
5.1 General
The test pieces shall be free of voids and flow lines. Test pieces may be selected either with or without
...


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Secretariat: DSM
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Date: 2025-082026-07-13
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Flexible cellular polymeric materials — Determination of tear
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strength
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Matériaux polymères alvéolaires souples — Détermination de la résistance au déchirement
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St l D fi iti
ISO/PRF 8067:2026(en)
Formatted: Font: Bold
Formatted: HeaderCentered
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
Formatted: French (Switzerland)
EmailE-mail: copyright@iso.org
Formatted: French (Switzerland)
Website: www.iso.orgwww.iso.org
Formatted: French (Switzerland)
Published in Switzerland
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Space Before:
0 pt, Line spacing: single
ii © ISO #### 2026 – All rights reserved
ii
ISO/DISPRF 8067:20252026(en) Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Contents
Formatted: Font: Bold
Formatted: HeaderCentered, Left
Foreword . v
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 . 1
4 Apparatus . 1
5 Test pieces . 2
5.1 General. 2
5.2 Trouser test piece for method A . 2
5.3 Angle test piece for method B . 4
6 Number of test pieces . 6
7 Conditioning . 6
8 Procedure . 7
8.1 General. 7
8.2 Method A . 7
8.3 Method B . 8
9 Expression of results . 9
10 Test report . 9
Annex A (informative) Precision comparison for the two types of test piece. 10
Bibliography . 12

Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 1
5 Test pieces . 2
5.1 General. 2
5.2 Trouser test piece for method A . 2
5.3 Angle test piece for method B . 3
6 Number of test pieces . 4
Formatted: Font: 10 pt
7 Conditioning . 4
Formatted: Font: 10 pt
8 Procedure . 4
Formatted: FooterCentered, Left, Space Before: 0 pt,
8.1 General. 4
Tab stops: Not at 17.2 cm
8.2 Method A . 4
Formatted: Font: 11 pt
8.3 Method B . 5
Formatted: FooterPageRomanNumber, Left, Space
9 Expression of results . 6
After: 0 pt, Tab stops: Not at 17.2 cm
iii
ISO/PRF 8067:2026(en)
Formatted: Font: Bold
Formatted: HeaderCentered
10 Test report . 6
Annex A (informative) Precision comparison for the two types of test piece . 7
Bibliography . 9
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Space Before:
0 pt, Line spacing: single
iv © ISO #### 2026 – All rights reserved
iv
ISO/DISPRF 8067:20252026(en) Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Foreword
Formatted: Font: Bold
ISO (the International Organization for Standardization) is a worldwide federation of national standards Formatted: HeaderCentered, Left
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
Formatted: Adjust space between Latin and Asian text,
ISO technical committees. Each member body interested in a subject for which a technical committee has been
Adjust space between Asian text and numbers
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/had not] received notice of (a)
Formatted: Font: Not Italic, Font color: Auto
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.
Formatted: English (United Kingdom)
This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
Formatted: Adjust space between Latin and Asian text,
SC 4, Products (other than hoses), in collaboration with the European Committee for Standardization (CEN)
Adjust space between Asian text and numbers
Technical Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation
Formatted: Font: Not Italic
between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 8067:2018), which has been technically revised.
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
The main change is as follows:
Formatted: Default Paragraph Font
— addition of information regarding the location and number of surfaces with skin in subclause 10.Clause
Formatted: Adjust space between Latin and Asian text,
10.
Adjust space between Asian text and numbers, Tab
stops: Not at 0.7 cm + 1.4 cm + 2.1 cm + 2.8 cm +
Any feedback or questions on this document should be directed to the user’s national standards body. A
3.5 cm + 4.2 cm + 4.9 cm + 5.6 cm + 6.3 cm + 7 cm
complete listing of these bodies can be found at www.iso.org/members.html.
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 8067:2025(en)

Formatted: Left
Flexible cellular polymeric materials — Determination of tear
strength
WARNING — Persons using this document should be familiar with normal laboratory practice. This
document does not purport to address all the safety problems, if any, associated with its use. It is the
responsibility of the user of this document to establish appropriate safety and health practices and to
determine the applicability of any national regulatory conditions.
1 Scope
This document specifies two methods for the determination of the tear strength of flexible cellular polymeric
materials.:
— — Method A, using a trouser test piece.;
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
— — Method B, using an angle test piece without a nick. 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
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,
the latest edition of the referenced document (including any amendments) applies.
Formatted: Default Paragraph Font
ISO 1923, Cellular plastics and rubbers — Determination of linear dimensions
Formatted: Default Paragraph Font
ISO 7500--1:2018, Metallic materials — Calibration and verification of static uniaxial testing machines — Part
Formatted: Default Paragraph Font
1: Tension/compression testing machines — Calibration and verification of the force-measuring system
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
3 Terms and definitions
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
For the purposes of this document, the following terms and definitions apply.
Formatted: Default Paragraph Font
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
— ISO Online browsing platform: available at https://www.iso.org/obp
Formatted: Default Paragraph Font
— IEC Electropedia: available at https://www.electropedia.org/
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
3.1
Formatted: English (United Kingdom)
tear strength
R Formatted: Font: 11 pt, English (United Kingdom)
maximum force per unit thickness observed when stretching a test piece to rupture
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and Asian text, Adjust space between Asian text and

numbers
Formatted: Regular Italic, Font: Bold, Not Italic
4 Apparatus
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
The tear strength shall be measured on a tensile-testing machine which will indicate the force at which rupture
of the test piece takes place. The accuracy of the test machine shall be of class 2 or higher, as specified in
Formatted: Footer, Left, Space After: 0 pt, Tab stops:
ISO 7500-1. Either of the following4.1 or 4.2 should be used:.
Not at 17.2 cm
ISO/PRF 8067:2026(en)
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Formatted: HeaderCentered
4.1 — an automaticAutomatic machine, which draws the actual curve; .
Formatted: Font: 11 pt, Not Bold
4.2 — a stylusStylus or scale, having an indicator that remains at the point of maximum force after
Formatted: Font: 11 pt, Not Bold
rupture of the test piece.
The accuracy of the test machine shall be of class 2 or higher, as specified in ISO 7500-1:2018.
5 Test pieces Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
5.1 General
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
The test pieces shall be free of voids and flow lines. Test pieces may be selected either with or without skin. If
stops: Not at 0.71 cm
the material exhibits a predominant direction of cellular structure (orientation of the cells), the trouser test
Formatted: Adjust space between Latin and Asian text,
piece shall be taken in such a way that the plane of the cut subsequently made in the test piece (see
Adjust space between Asian text and numbers
Figure 1)Figure 1) is parallel to, and the long dimension of the cut perpendicular to, the predominant foam-
rise direction and the. The angle test piece shall be taken in such a way that the plane of the V--shaped side of
the test piece (see Figure 3)Figure 3) is parallel to, and the long dimension of the test piece perpendicular to,
the predominant foam-rise direction. If this is not possible, the orientation of the long dimension of the cut or
the V--shaped side of the test piece with respect to the predominant foam-rise direction shall be stated in the
test report. See Annex ASee Annex A for the difference of test results and the precision for each type of test
pieces.
5.2 Trouser test piece for method A
Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers, Tab
The trouser test piece shall be a rectangular parallelepiped cut from a sheet of material with a band knife or a
stops: Not at 0.71 cm
cutting die. Each test piece shall have the dimensions given in Figure 1Figure 1 and a 45 mm to 55 mm cut
Formatted: Adjust space between Latin and Asian text,
shall be made at one end. The required tear length (25 mm) shall be marked on the test piece. The
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predominant foam-rise direction for the trouser test piece is indicated by an arrow in Figure 1.Figure 1.
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Line spacing: single
2 © ISO #### 2026 – All rights reserved
ISO/DISPRF 8067:20252026(en) Formatted: Font: 11 pt, Bold
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Dimensions in millimetres
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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
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...


Norme
internationale
Quatrième édition
Matériaux polymères alvéolaires
2026-09
souples — Détermination de la
résistance au déchirement
Flexible cellular polymeric materials — Determination of tear
strength
PROOF/ÉPREUVE
Numéro de référence
Norme
internationale
Quatrième édition
Matériaux polymères alvéolaires
2026-09
souples — Détermination de la
résistance au déchirement
Flexible cellular polymeric materials — Determination of tear
strength
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2026
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
PROOF/ÉPREUVE
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
PROOF/ÉPREUVE
ii
Sommaire Page
Avant-propos .iv
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Appareillage . 1
5 Éprouvettes. 2
5.1 Généralités .2
5.2 Éprouvette pantalon pour la méthode A .2
5.3 Éprouvette angulaire pour la méthode B .3
6 Nombre d'éprouvettes . 4
7 Conditionnement . 4
8 Mode opératoire . 5
8.1 Généralités .5
8.2 Méthode A .5
8.3 Méthode B .6
9 Expression des résultats . 6
10 Rapport d'essai . 6
Annexe A (informative) Comparaison de fidélité pour les deux types d'éprouvette . 8
Bibliographie . 10
PROOF/ÉPREUVE
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 tout ou partie de
tels droits de brevet.
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 comité chargé de l'élaboration du présent document est l'ISO/TC 45, Élastomères et produits à base
d'élastomères, sous-comité SC 4, Produits (autres que tuyaux), en collaboration avec le comité technique CEN/
TC 249, Plastiques, du Comité européen de normalisation (CEN), conformément à l’Accord de coopération
technique entre l’ISO et le CEN (Accord de Vienne).
Cette quatrième édition annule et remplace la troisième édition (ISO 8067:2018), qui a fait l'objet d'une
révision technique.
Les principales modifications sont les suivantes:
— à l’Article 10, des informations concernant l'emplacement et le nombre de surfaces avec peau ont été
ajoutées.
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.
PROOF/ÉPREUVE
iv
Norme internationale ISO 8067:2026(fr)
Matériaux polymères alvéolaires souples — Détermination de
la résistance au déchirement
AVERTISSEMENT — Il convient que les utilisateurs du présent document connaissent bien les
pratiques courantes de laboratoire. 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 de mettre en place des pratiques appropriées en matière d’hygiène et de sécurité,
et de déterminer l'applicabilité de toute condition réglementaire nationale.
1 Domaine d'application
Le présent document spécifie deux méthodes pour la détermination de la résistance au déchirement des
matériaux polymères alvéolaires souples:
— la Méthode A, utilisant une éprouvette pantalon;
— la Méthode B, utilisant une éprouvette angulaire sans entaille.
2 Références normatives
Les documents suivants cités dans le texte 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 1923, Plastiques et caoutchoucs alvéolaires — Détermination des dimensions linéaires
ISO 7500-1, Matériaux métalliques — Étalonnage et vérification des machines pour essais statiques uniaxiaux
— Partie 1: Machines d'essai de traction/compression — Étalonnage et vérification du système de mesure de
force
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
résistance au déchirement
R
force maximale par unité d'épaisseur observée durant l'étirement d'une éprouvette jusqu'à rupture
4 Appareillage
La résistance au déchirement doit être mesurée sur une machine d'essai de traction, laquelle indiquera la
force pour laquelle la rupture de l'éprouvette a lieu. La précision de la machine d'essai doit être de classe 2
ou mieux, tel que défini dans l'ISO 7500-1. Il convient d'utiliser soit 4.1, soit 4.2.
PROOF/ÉPREUVE
4.1 Machine automatique, qui dessine la courbe réelle.
4.2 Stylet ou règle graduée, muni d'un indicateur qui s'immobilise au point de la force maximale après
rupture de l'éprouvette.
5 Éprouvettes
5.1 Généralités
Les éprouvettes ne doivent présenter ni peau, ni vides, ni ondulations. Les éprouvettes peuvent être
sélectionnées avec ou sans peau. S'il apparaît que la structure alvéolaire du matériau présente une direction
prédominante (orientation des alvéoles), l'éprouvette pantalon doit être prélevée de manière que le plan de
la coupure fait
...