EN ISO 2061:2010

Textiles - Determination of twist in yarns - Direct counting method (ISO 2061:2010)

ISO 2061:2010 specifies a method for the determination of the direction of twist in yarns, the amount of twist, in terms of turns per unit length, and the change in length on untwisting, by the direct counting method
ISO 2061:2010 is applicable to
single yarns (spun and filament),
plied yarns, and
cabled yarns.
Separate procedures are given for each type of yarn. The method is designed primarily for yarns in packages, but, with special precautions, the procedures can be used for yarns taken from fabrics. It is not suitable for the determination of twist in a monofilament.
ISO 2061:2010 covers the determination of twist in plied and cabled yarns as follows:
in plied yarns: the final twist of the plied yarns and the original twist of the single yarn before plying;
in cabled yarns:
the final cabling twist of the yarn;
the original twist of the plied yarn after plying, but prior to the last stage of processing;
the twist of the single yarn before plying.

Textilien - Bestimmung der Drehung von Garnen - Direktes Zählverfahren (ISO 2061:2010)

Diese Internationale Norm legt ein Verfahren zur Bestimmung der Drehungsrichtung, der Anzahl der
Drehungen je Längeneinheit und der relativen Längenänderung beim Aufdrehen von Garnen und Zwirnen
durch ein direktes Zählverfahren fest.
1.2 Diese Internationale Norm ist anwendbar auf:
a) Einfachgarne (Spinnfasergarn und Filamentgarn);
b) zweifache und mehrfache Zwirne;
c) mehrstufige Zwirne.
Es werden für jede der oben genannten Garn- bzw. Zwirnart getrennte Verfahren angegeben. Die Verfahren
sind in erster Linie für Garne und Zwirne in Aufmachungseinheiten ausgelegt, aber mit besonderen Vorsichtsmaßnahmen
können die Verfahren auch für Garne und Zwirne verwendet werden, die aus Geweben
und Maschenwaren entnommen wurden. Es ist nicht geeignet für die Bestimmung der Drehung eines
Monofils.
ANMERKUNG Siehe auch ISO 1890 [1], die besonders für die Erfordernisse der Glasgewebetechnologie erarbeitet
wurde, und ISO 7211-4 [2].
1.3 Diese Internationale Norm ist anwendbar für die Bestimmung der Drehung von zwei- und mehrfachen
Zwirnen sowie von mehrstufigen Zwirnen.
a) Bei zwei- und mehrfachen Zwirnen: die Enddrehung des zwei- oder mehrfachen Zwirnes und die
Ausgangsdrehung des Einfachgarnes.
b) Bei mehrstufigen Zwirnen:
⎯ die Enddrehung des mehrstufigen Zwirnes;
⎯ die Ausgangsdrehung des zwei- oder mehrfachen Zwirnes, aber vor der letzten Bearbeitungsstufe;
⎯ die Drehung des Einfachgarnes vor dem Zwirnen.
1.4 Wenn gewünscht, kann für die Bestimmung der Drehung des Einfachgarnes und der Komponenten des
zwei- oder mehrfachen Zwirnes, wie sie im Endaufbau vorliegen, das Sonderverfahren nach 10.5.7 verwendet
werden.

Textiles - Détermination de la torsion des fils - Méthode par comptage direct (ISO 2061:2010)

L'ISO 2061:2010 spécifie une méthode de détermination du sens de torsion des fils, de la valeur de cette torsion, exprimée en tours par unité de longueur, et de la variation de longueur après détorsion par la méthode par comptage direct.
L'ISO 2061:2010 est applicable:
aux fils simples (filés et filaments);
aux fils retors;
aux fils câblés.
Des modes opératoires distincts sont donnés pour chaque type de fil. La méthode est destinée tout d'abord aux fils sur enroulements, mais avec quelques précautions elle est aussi applicable aux fils prélevés sur les étoffes. Elle ne convient pas à la détermination de la torsion d'un monofilament.
L'ISO 2061:2010 est applicable à la détermination des torsions suivantes des retors et des câblés.
Pour les fils retors: torsion finale des fils retors et torsion d'origine des fils simples avant retordage.
Pour les fils câblés:
torsion finale du fil câblé;
torsion du fil retors après retordage mais avant câblage;
torsion du fil simple avant retordage.

Tekstilije - Določanje zavojev preje - Metoda neposrednega štetja (ISO 2061:2010)

Ta mednarodni standard določa metodo za določevanje smeri zavojev preje, velikosti zavojev, v izrazih obratov na dolžino enote, in spremembo dolžine odvijanja z metodo direktnega štetja. Ta mednarodni standard velja za:
a) enojne preje (predene ali vlaknene),
b) večnitne preje in
c) pramenske preje.
Za vsako vrsto preje so podani ločeni postopki. Metoda je predvsem načrtovana za preje v paketih, vendar se s posebnimi previdnostnimi ukrepi lahko uporabi za preje, vzete it tkanin. Ni primerna za določanje zavoja v monofilamentu.
OPOMBA Glej tudi ISO 1890[1], ki je bil pripravljen posebej za potrebe tehnologije steklenih tkanin, in ISO 7211-4[2].
Ta mednarodni standarda zajema določanje zavojev v večnitnih in pramenskih prejah, kot sledi:
a) v večnitnih prejah: zadnji zavoj večnitnih prej in prvotni zavoj enojne preje pred večnitenjem;
b) v pramenskih prejah:
- zadnji pramenski zavoj preje;
- prvotni zavoj večnitne preje, po večnitenju, vendar pred zadnjo stopnjo obdelave;
- zavoj enojne preje pred večnitenjem.
Če je zaželeno, je lahko zavoj komponent enojne in večnitne preje, ko ležijo v končni sestavi, določen s posebnim postopkom, podanim v točki 10.5.7. Ta mednarodni standard ne velja, razen po dogovoru za preje, ki se raztegnejo več kot 0,5 %, ko se napetost poveča na enoto iz 0,5 cN na 1,0 cN linearne gostote preje, izražene v tex. Takšne preje se lahko preskuša pod posebnimi pogoji napetosti, na katere pristajajo vse stranke, zainteresirane za rezultate preskusa. Ta mednarodni standard ni primeren za proizvode predenja z odprtim koncem in pomešanimi (prepletenimi) večnitnimi prejami. Ta mednarodni standard ne velja za prediva, ki so prevelika, da bi jih bilo mogoče postaviti v spone preskusnega aparata, brez dovolj velikega mečkanja ali dovolj resne popačitve, kar bi vplivalo na končne rezultate.

General Information

• Status: Withdrawn
• Publication Date: 31-Jul-2010
• Withdrawal Date: 14-Jul-2015
• ICS: 59.080.20 - Yarns
• Technical Committee: CEN/TC 248 - Textiles and textile products
• Drafting Committee: CEN/TC 248/SC 2 - Physical properties
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 15-Jul-2015
• Ref Project: SIST EN ISO 2061:2010 - Textiles - Determination of twist in yarns - Direct counting method (ISO 2061:2010)

Relations

• Replaces: EN ISO 2061:1995 - Textiles - Determination of twist in yarns - Direct counting method (ISO 2061:1995)
• Effective Date: 09-Aug-2010
• Replaced By: EN ISO 2061:2015 - Textiles - Determination of twist in yarns - Direct counting method (ISO 2061:2015)
• Effective Date: 22-Jul-2015

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2010
1DGRPHãþD
SIST EN ISO 2061:1996
7HNVWLOLMH'RORþDQMH]DYRMHYSUHMH0HWRGDQHSRVUHGQHJDãWHWMD,62
Textiles - Determination of twist in yarns - Direct counting method (ISO 2061:2010)
Textilien - Bestimmung der Drehung von Garnen - Direktes Zählverfahren (ISO
2061:2010)
Textiles - Détermination de la torsion des fils - Méthode par comptage direct (ISO
2061:2010)
Ta slovenski standard je istoveten z: EN ISO 2061:2010
ICS:
59.080.20 Preje Yarns
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 2061
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2010
ICS 59.080.20 Supersedes EN ISO 2061:1995
English Version
Textiles - Determination of twist in yarns - Direct counting
method (ISO 2061:2010)
Textiles - Détermination de la torsion des fils - Méthode par Textilien - Bestimmung der Drehung von Garnen - Direktes
comptage direct (ISO 2061:2010) Zählverfahren (ISO 2061:2010)
This European Standard was approved by CEN on 31 July 2010.

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 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2061:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 2061:2010) has been prepared by Technical Committee ISO/TC 38 "Textiles" 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 February 2011, and conflicting national standards shall be withdrawn
at the latest by February 2011.
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 2061:1995.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 2061:2010 has been approved by CEN as a EN ISO 2061:2010 without any modification.
INTERNATIONAL ISO
STANDARD 2061
Third edition
2010-08-01
Textiles — Determination of twist in
yarns — Direct counting method
Textiles — Détermination de la torsion des fils — Méthode par
comptage direct
Reference number
ISO 2061:2010(E)
©
ISO 2010
ISO 2061:2010(E)
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ii © ISO 2010 – All rights reserved

ISO 2061:2010(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.2
3 Terms and definitions .2
4 Principle.3
5 Apparatus.3
6 Standard atmosphere.3
7 Sampling.3
8 Test specimens.4
8.1 Length.4
8.1.1 Single spun yarns.4
8.1.2 Single multifilament, plied and cabled yarns .4
8.2 Selection.4
8.3 Number of test specimens.4
9 Procedure 1 — Determination of the direction of twist.5
10 Procedure 2 — Determination of the amount of twist .6
10.1 Preliminary procedure .6
10.2 Single, spun yarn.6
10.3 Single, multifilament yarns.6
10.4 Plied yarns .7
10.5 Cabled yarns .7
11 Calculation of results.7
11.1 Average twist per specimen.7
11.2 Average twist per sample .8
11.3 Variation of observations .8
11.4 Change in length on untwisting.8
11.5 Twist factor (α).8
12 Expression of results.9
13 Test report.9
13.1 Single yarns .9
13.2 Plied yarns .10
13.3 Cabled yarns .10
Annex A (informative) Suggested procedure for sampling .11
Bibliography.12

ISO 2061:2010(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
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.
ISO 2061 was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 23, Fibres and yarns.
This third edition cancels and replaces the second edition (ISO 2061:1995), of which it constitutes a minor
revision by replacing the use of the outdated term folded with plied.
The principal additional modifications consist of the following:
⎯ editing Clause 3, Terms and definitions, in accordance with the ISO/IEC Directives, Part 2:2004;
⎯ deleting publication dates from normative references;
⎯ a Bibliography has been added.

iv © ISO 2010 – All rights reserved

INTERNATIONAL STANDARD ISO 2061:2010(E)

Textiles — Determination of twist in yarns — Direct counting
method
1 Scope
1.1 This International Standard specifies a method for the determination of the direction of twist in yarns,
the amount of twist, in terms of turns per unit length, and the change in length on untwisting, by the direct
counting method.
1.2 This International Standard is applicable to
a) single yarns (spun and filament),
b) plied yarns, and
c) cabled yarns.
Separate procedures are given for each type of yarn. The method is designed primarily for yarns in packages,
but, with special precautions, the procedures can be used for yarns taken from fabrics. It is not suitable for the
determination of twist in a monofilament.
[1]
NOTE See also ISO 1890 , which was prepared especially for the needs of glass textile technology, and
[2]
ISO 7211-4 .
1.3 This International Standard covers the determination of twist in plied and cabled yarns as follows:
a) in plied yarns: the final twist of the plied yarns and the original twist of the single yarn before plying;
b) in cabled yarns:
⎯ the final cabling twist of the yarn;
⎯ the original twist of the plied yarn after plying, but
...