SIST EN ISO 2062:2002

SLOVENSKI STANDARD
SIST EN ISO 2062:2002
01-oktober-2002
Tekstilije - Preje iz navitkov - Ugotavljanje pretržne sile in pretržnega raztezka na
posameznih odrezkih preje
Textiles - Yarns from packages - Determination of single-end breaking force and
elongation at break (ISO 2062:1993)
Textilien - Garne von Aufmachungseinheiten - Bestimmung der Höchstzugkraft und
Höchstzugkraftdehnung von Garnabschnitten (ISO 2062:1993)
Textiles - Fils sur enroulements - Détermination de la force de rupture et l'allongement a
la rupture du fil individuel (ISO 2062:1993)
Ta slovenski standard je istoveten z: EN ISO 2062:1995
ICS:
59.080.20 Preje Yarns
SIST EN ISO 2062:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 2062:2002

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SIST EN ISO 2062:2002

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SIST EN ISO 2062:2002

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SIST EN ISO 2062:2002

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SIST EN ISO 2062:2002

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SIST EN ISO 2062:2002
ISO
INTERNATIONAL
2062
STANDARD
Second edition
1993-10-01
Corrected and reprinted
1995-03-15
Yarns from packages -
Textiles .-
Determination of Single-end breaking forte
and elongation at break
- Dherminatbn de Ia forte de rupture
Textiles - Fils SW enroulements
et I’allongemen t 2 Ia rupture du fil individuel
Reference number
ISO 2062:i 993(E)

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SIST EN ISO 2062:2002
BS8 2062:1993(E)
Forevvordl
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The werk
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interesred in a subject f:3r
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmentai
and non-governmental, in liaison with ISO, aiso take part in the work. ISO
coilaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 2062 was prepared by Technical Committee
lSO/TC 38, Textiles, Sub-Committee SC 5, Y~VI testing.
This second edition cancels and replaces the first edition
(ISO 2062:1972), which has been technically revised.
Annex A of this International Standard is for information only.
0 ISO 1993
All rights reserved. No part of this pubkation may ba reproduced or utilized in any form or
by any means, electronie or mechanical, including pho:ocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
ii

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SIST EN ISO 2062:2002
ISO 2062:1993(E)
Introduction
In the i95Os and 1960s when this International Standard was first pre-
pared, three types of tensile tester were in wide use: constant rate of
specimen extension (CRE), constant rate of travel (CRT), and constant rate
of loading (CRL). lt was therefore advisable to state the rate of Operation
in a way which would be common to all three types of tester. In addition,
the best possible agreement was sought between test results of the three
types of tester. Consequently, the principle of constant time to break was
adopted and 20s to break was Chosen for this International Standard and
also for a number of national Standards.
In the early 1990s when the present revision was prepared, CRE testers
were recognized as the best type, while CRT and CRL testers were quickly
becoming obsolete. However, since CRT and CRL testers are still in use
internationally, the procedure for using them is included in an informative
annex. There is no assurance that the results from the three types of
tester will agree.
This International Standard considers CRE testers only, so the time-to-
break principle is no longer needed and a simpler Statement of rate of
displacement is used. The rate of extension of 100 % per minute is
adopted as Standard, but higher rates are permitted by agreement for
automatic testers.

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SIST EN ISO 2062:2002
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SIST EN ISO 2062:2002
ISO 2062:1993(E)
INTERNATIONAL STANDARD
Textiles - Yarns from packages - Determination of
single-end breaking forte and elongation at break
NOTE 2 A method for the testing of glass yarns is given
1 Scope
in ISO 3341 :1984, Te,yti/e glass - Yarns - Determ/nation
of breaking forte and breaking elongation.
1 .l This International Standard specifies methods
for the determination of the breaking forte and elon-
1.5 This International Standard is applicable to yarns
gation at break of textile yarns taken from packages.
from packages but tan be applied to yarns extracted
from fabrics, subject to agreement between the in-
Four methods are given:
terested Parties.
A: manual; specimens are taken directly from
conditioned packages;
1.6 lt is intended for the Single-end (Single-Strand)
testing of yarns.
B: automatic; specimens are taken directly from
conditioned packages;
NOTE 3 The skein method of testing is given in
ISO 6939:1988, Textiles - Yams from packages - Method
C: manual; relaxed test skeins are used after ton- of test for breaking strength of yarn by the skein method.
ditioning;
D: manual; specimens are used after wetting.
2 Normative references
The foilowing Standards contain provisions which,
1.2 Method C should be used in cases oi dispute
through reference in this text, constitute provisions
regarding elongation at break of the yarn.
of this International Standard. At the time of publi-
cation, the editions indicated were valid. All Standards
NOTE 1 Methods A, B and C are expected to give the
are subject to revision, and Parties to agreements
same results for yarn strength but method C may give
based on this International Standard are encouraged
somewhat truer (and higher) values of elongation than A or
to investigate the possibility of applying the most re-
B. Method D is Iikely to give results differing, for bo?h
cent editions of the Standards indicated below.
breaking forte and elongation at break, from those obtained
by method A, B or C. Members of IEC and ISO maintain registers of cur-
rently valid International Standards.
1.3 This International Standard specifies methods
- Standard atmospheres for
ISO 139: 1973, Textles
using constant rate of specimen extension (CRE)
conditioning and testing.
tensile testers. Testing on the now obsolete constant
rate of travel (CRT) and constant rate of loading (CRL)
ISO 2060:-‘1, Texti/es - Yarn from packages - De-
instruments is covered, for information, in annex A,
termination of linear density (mass per unit length) by
in recognition of the fact that these instruments are
the skein method.
still popular and may be used by agreement.
1.4 This International Standard applies to all types 3 Definitions
of yarn except glass yarns, elastomeric yarns, aramid
For the purposes of this International Standard, the
yarns, ceramic yarns, carbon yarns and polyolefin tape
yarns. following definitions apply.
1) To be published. (Revision of ISO 2060:1972)

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SIST EN ISO 2062:2002
3.1 breaking forte (load): Maximum forte applied b) The constant rate of displacement of the moving
to a specimen in a tensile test carried to rupture. For clamp shall be 500 mm/min or 250 mm/min, to an
yarns, it is preferably expressed in centinewtons. accuracy of + 2 %, with higher rates being per-
mitted for automatic testers on agreement.
3.2 elongation at break: Increase in length of a
c) The maximum error of the indicated forte shall not
specimen produced by the breaking forte. lt is ex-
exceed 2 % of the true forte.
pressed as a percentage of the original nominal
length.
d) The tester may be of the manual or automatic
3.3 breaking tenacity: Ratio of a yarn’s breaking tYPe*
forte to its linear density. lt is usually expressed in
e) The clamps for gripping the specimens shall pre-
centinewtons per tex.
vent slipping or cutting of the specimens and
breaks at the jaws. Flat-faced unlined jaws shall
3.4 constant rate of specimen extension (CRE)
be the normal type but, if these cannot prevent
tester: Testing machine in which one end of the
Slippage, then other types of clamp may be used
specimen is held in a virtually stationary clamp and the
on agreement, such as lined jaws, bollard clamps
other end is gripped in a clamp that is driven at a
or other types of snubbing device. As the type of
constant Speed. A suitable System is provided for de-
clamp may influence the reading of the elongation,
tecting and recording the forte applied and the elon-
all Parties shall use the same type.
gation.
f) The tester shall be equipped with an autographic
3.5 clamp: That part of a tensile testing machine
force/elongation recording device of sufficiently
used to grip the specimen by means of suitable jaws.
fast response, or with a System directly recording
the breaking forte and elongation at break.
3.6 jaws: Those elements of a clamp which grip the
specimen.
g) The tester shall be capable of setting a pretension
either by means of a set of pretensioning weights
3.7 gauge length: Length of the specimen meas-
or by the use of the forte-measuring device.
ured between the Points of attachment to clamps
while under tension. In bollard or capstan clamps, it
is the distance between their gripping Points, meas-
5.2 Reel, for preparing test skeins from the labora-
ured along the path of the yarn.
tot-y Sample (for methods C and D).
3.8 package: Length of yarn in a form suitable for
5.3 Swift, or similar device, for holding the test
use, handling, storing, etc. Packages tan be sup-
skein under Zero tension and permitting easy transfer
ported (e.g. cones, bobbins) or unsupported (e.g.
of the yarn to the tensile tester (for method C).
skeins, balls).
5.4 Receptacles, for immersing the Sample or the
4 Principle
specimens in water (for method D).
A specimen of yarn is extended until rupture by a
5.5 Tap water, at room temperature (for method
suitable mechanical device, and the breaking forte
.
D)
and elongation at break are recorded. A constant rate
of specimen extension of 100 % per minute (based
on the initial specimen length) is used, but higher
5.6 Nonionic surfactant, 0,l % aqueous Solution
rates are permitted for automatic testers on agree-
(for method D).
ment. Two gauge lengths are permitted: usually
500 mm (with a rate of displacement of
500 mm/min), and exceptionally 250 mm (with a rate
6 Sampling
of displacement of 250 mm/min).
6.1 Samples shall be taken in accordance with
5 Apparatus and materials
a) the directions given in the material specification
when available, or
5.1 Constant rate of specimen extension (CRE)
tester, which camplies with the following require-
b) the procedures described in 6.2 to 6.7.
ments.
a) The tester shall be capable of being set at gauge 6.2 A bulk Sample shall be taken of one or more
lengths of 500 mm + 2 mm or 250 mm + 1 mm, cases, as representative of the lot to be tested as
or preferably both. - follows:
2

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SIST EN ISO 2062:2002
ISO 2062:1993(E)
No. of cases selected 7.2 Fo
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