oSIST prEN ISO 8067:2025
(Main)Flexible cellular polymeric materials - Determination of tear strength (ISO/DIS 8067:2025)
Flexible cellular polymeric materials - Determination of tear strength (ISO/DIS 8067:2025)
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.
Flexible Polymer-Schaumstoffe - Bestimmung des Weiterreißwiderstands (ISO/DIS 8067:2025)
Matériaux polymères alvéolaires souples - Détermination de la résistance au déchirement (ISO/DIS 8067:2025)
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.
Mehki penjeni polimerni materiali - Ugotavljanje pretržne trdnosti (ISO/DIS 8067:2025)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2025
Mehki penjeni polimerni materiali - Ugotavljanje pretržne trdnosti (ISO/DIS
8067:2025)
Flexible cellular polymeric materials - Determination of tear strength (ISO/DIS
8067:2025)
Flexible Polymer-Schaumstoffe - Bestimmung des Weiterreißwiderstands (ISO/DIS
8067:2025)
Matériaux polymères alvéolaires souples - Détermination de la résistance au
déchirement (ISO/DIS 8067:2025)
Ta slovenski standard je istoveten z: prEN ISO 8067
ICS:
83.100 Penjeni polimeri Cellular materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 8067
ISO/TC 45/SC 4
Flexible cellular polymeric
Secretariat: DSM
materials — Determination of tear
Voting begins on:
strength
2025-05-27
Matériaux polymères alvéolaires souples — Détermination de la
Voting terminates on:
résistance au déchirement
2025-08-19
ICS: 83.100
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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 SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 8067:2025(en)
DRAFT
ISO/DIS 8067:2025(en)
International
Standard
ISO/DIS 8067
ISO/TC 45/SC 4
Flexible cellular polymeric
Secretariat: DSM
materials — Determination of tear
Voting begins on:
strength
Matériaux polymères alvéolaires souples — Détermination de la
Voting terminates on:
résistance au déchirement
ICS: 83.100
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 8067:2025(en)
ii
ISO/DIS 8067:2025(en)
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 . 4
8.1 General .4
8.2 Method A .4
8.3 Method B .5
9 Expression of results . 6
10 Test report . 6
Annex A (informative) Precision comparison for the two types of test piece. 7
Bibliography . 9
iii
ISO/DIS 8067:2025(en)
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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on 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 the following URL:
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).
This fourth edition cancels and replaces the third edition (ISO 8067:2018), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— in 10 f), the location and number of surfaces with skin have been added.
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
DRAFT International Standard ISO/DIS 8067:2025(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 of the safety problems, if any, associated with its use. It is
the responsibility of the user 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 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
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. An automatic machine should preferably be used which draws the
actual curve, or a stylus or scale should be used having an indicator that remains at the point of maximum
force after rupture of the test piece.
The accuracy of the test machine shall be class 2 or better as defined in ISO 7500-1.
ISO/DIS 8067:2025(en)
5 Test pieces
5.1 General
The test pieces shall be free of voids and flow lines. Test pieces can be selected either with or without skin. If
the material exhibits a predominant direction of cellular structure (orientation of the cells), the trouser test
piece shall be taken in such a way that the plane of the cut subsequently made in the test piece (see Figure 1)
is parallel to, and the long dimension of the cut perpendicular to, the predominant foam-rise direction and
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) 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 A
for the difference of test results and the precision for each type of test pieces.
5.2 Trouser test piece for method A
The trouser test piece shall be a rectangular parallelepiped cut from a sheet of material with a band knife
or a cutting die. Each test piece shall have the dimensions given in Figure 1 and a 45 mm to 55 mm cut shall
be made at one end. The required tear length (25 mm) shall be marked on the test piece. The predominant
foam-rise direction for the trouser test piece is indicated by an arrow in Figure 1.
Dimensions in millimetres
Key
1 location of thickness measurement
2 mark indicating required tear length
3 cut made in test piece
a
Predominant foam-rise direction.
Figure 1 — Trouser test piec
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.