EN ISO 4674-1:2016

SLOVENSKI STANDARD
01-februar-2017
1DGRPHãþD
SIST EN ISO 4674-1:2003
Gumirane ali plastificirane tekstilije - Ugotavljanje utržne trdnosti - 1. del: Metode
trajnega razmerja trganja (ISO 4674-1:2016)
Rubber- or plastics-coated fabrics - Determination of tear resistance - Part 1: Constant
rate of tear methods (ISO 4674-1:2016)
Mit Kautschuk oder Kunststoff beschichtete Textilien - Bestimmung der
Weiterreißfestigkeit - Teil 1: Verfahren mit konstanter Geschwindigkeit (ISO 4674-
1:2016)
Supports textiles revêtus de caoutchouc ou de plastique - Détermination de la résistance
au déchirement - Partie 1 : Méthodes à vitesse constante de déchirement (ISO 4674-
1:2016)
Ta slovenski standard je istoveten z: EN ISO 4674-1:2016
ICS:
59.080.40 3RYUãLQVNRSUHYOHþHQH Coated fabrics
WHNVWLOLMH
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4674-1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2016
EUROPÄISCHE NORM
ICS 59.080.40 Supersedes EN ISO 4674-1:2003
English Version
Rubber- or plastics-coated fabrics - Determination of tear
resistance - Part 1: Constant rate of tear methods (ISO
4674-1:2016)
Supports textiles revêtus de caoutchouc ou de Mit Kautschuk oder Kunststoff beschichtete Textilien -
plastique - Détermination de la résistance au Bestimmung der Weiterreißfestigkeit - Teil 1:
déchirement - Partie 1: Méthodes à vitesse constante Verfahren mit konstanter Geschwindigkeit (ISO 4674-
de déchirement (ISO 4674-1:2016) 1:2016)
This European Standard was approved by CEN on 2 October 2016.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4674-1:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 4674-1:2016) has been prepared by Technical Committee ISO/TC 45 “Rubber
and rubber products” in collaboration with Technical Committee CEN/TC 248 “Textiles and textile
products” the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2017, and conflicting national standards shall be
withdrawn at the latest by May 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 4674-1:2003.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 4674-1:2016 has been approved by CEN as EN ISO 4674-1:2016 without any
modification.
INTERNATIONAL ISO
STANDARD 4674-1
Second edition
2016-10-15
Rubber- or plastics-coated fabrics —
Determination of tear resistance —
Part 1:
Constant rate of tear methods
Supports textiles revêtus de caoutchouc ou de plastique —
Détermination de la résistance au déchirement —
Partie 1: Méthodes à vitesse constante de déchirement
Reference number
ISO 4674-1:2016(E)
©
ISO 2016
ISO 4674-1:2016(E)
© ISO 2016, Published in Switzerland
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ii © ISO 2016 – All rights reserved

ISO 4674-1:2016(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus and reagents . 2
5 Atmospheres for conditioning and testing . 2
5.1 For conditioning . 2
5.2 For testing . 2
6 Time-interval between manufacture and testing. 2
7 Method A — Tongued (double-tear) test piece . 2
7.1 Selection and preparation of test pieces . 2
7.2 Procedure . 4
7.3 Calculation and expression of results. 5
7.3.1 Trace with a series of definite peaks . 5
7.3.2 Trace without definite peaks . 5
8 Method B — Trouser-shaped (single-tear) test piece . 6
8.1 Selection and preparation of test pieces . 6
8.2 Procedure . 7
8.3 Calculation and expression of results. 8
9 Precision . 8
10 Test report . 8
Annex A (informative) Example of calculation of tear force . 9
Annex B (normative) Wide-width trouser-shaped test piece .11
ISO 4674-1:2016(E)
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 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.
The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee
SC 4, Products (other than hoses).
This second edition cancels and replaces the first edition (ISO 4674-1:2003), which has been technically
revised. The changes are as follows.
— The title of Clause 4 has been changed to “Apparatus and reagents”. The clamping device and some
reagents have been added.
— Clause 5 has been broken down to two subclauses for conditioning and for testing respectively. The
atmosphere of conditioning has been referred to the condition of “1” specified in ISO 2231:1989.
— New Clause 6 “Time-interval between manufacturing and testing” has been added.
— In 7.1, 7.2, 8.1, and 8.2, the wet testing has been moved from Clause 5 with partial modification.
— In 7.2 and 8.2, the procedure of handling abnormal test results has been incorporated. The NOTE in
each subclause has been moved to the body text respectively.
— In Clause 10, item f) has been added.
— Annex B has been changed to normative and the body text format has been subdivided by adding
clauses.
ISO 4674 consists of the following parts, under the general title Rubber- or plastics-coated fabrics —
Determination of tear resistance:
— Part 1: Constant rate of tear methods
— Part 2: Ballistic pendulum method
iv © ISO 2016 – All rights reserved

ISO 4674-1:2016(E)
Introduction
Tearing is amongst the more usual ways of destruction for many thin materials such as paper, coated or
uncoated textiles, plastic films and leather. Knowledge of the resistance of these materials to this type
of behaviour is therefore very important.
In practice, tearing can result from very different circumstances; hence the large number of test
methods that have been developed in order to predict the behaviour of materials in various situations.
The ISO 4674 series deals with initiated tearing, i.e. the propagation of a tear from an initiating cut.
This part of ISO 4674 describes two methods using a tensile-testing machine at constant rate of
elongation. ISO 4674-2 describes a dynamic method using the kinetic energy of a falling pendulum.
INTERNATIONAL STANDARD ISO 4674-1:2016(E)
Rubber- or plastics-coated fabrics — Determination of tear
resistance —
Part 1:
Constant rate of tear methods
WARNING — Persons using this part of ISO 4674 should be familiar with normal laboratory
practice. This part of ISO 4674 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 ensure compliance with any national regulatory conditions.
1 Scope
This part of ISO 4674 specifies two methods for determining the forces necessary to initiate and
propagate tearing of a coated fabric using the constant rate of tear method. The methods described are
the following:
— method A: tongue tear;
— method B: trouser tear.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 1421, Rubber- or plastics-coated fabrics — Determination of tensile strength and elongation at break
ISO 2231:1989, Rubber- or plastics-coated fabrics — Standard atmospheres for conditioning and testing
ISO 2286-1, Rubber- or plastics-coated fabrics — Determination of roll characteristics — Part 1: Methods
for determination of length, width and net mass
ISO 2602, Statistical interpretation of test results — Estimation of the mean — Confidence interval
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
peak
point on an autographic trace where the gradient, relative to the force values recorded, changes from
positive to negative
Note 1 to entry: For tear recordings, a peak to be used for calculation is defined by a drop in force of at least 10 %
of the last increasing force value.
3.2
length of tear
measured length of a tear produced by a tearing f
...