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Dansk standard

DS/EN ISO 13015

1. udgave 2013-08-27

Vævet stof – Vridning – Bestemmelse af

skævhed og bøjning

Woven fabrics – Distortion – Determination of skew and bow

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DS/EN ISO 13015 København DS projekt: M257780 ICS: 59.080.30 Første del af denne publikations betegnelse er: DS/EN ISO, hvilket betyder, at det er en international standard, der har status både som europæisk og dansk standard. Denne publikations overensstemmelse er: IDT med: ISO 13015:2013. IDT med: EN ISO 13015:2013. DS-publikationen er på engelsk.

COPYRIGHT © Danish Standards Foundation. Not for commercial use or reproduction. DS/EN ISO 13015:2013

EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN ISO 13015

August 2013

ICS 59.080.30

English Version

Woven fabrics - Distortion - Determination of skew and bow (ISO 13015:2013)

Étoffes tissées - Déformation - Détermination de l'écart angulaire et du cintrage (ISO 13015:2013)

Gewebe - Verzerrung - Bestimmung des Schräg- und Bogenverzugs (ISO 13015:2013)

This European Standard was approved by CEN on 19 July 2013. 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 C O M I T É E U R O P É E N D E N O R M A LI S A T I O N EUR OP ÄIS C HES KOM ITEE FÜR NOR M UNG

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© 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.

Ref. No. EN ISO 13015:2013: E


EN ISO 13015:2013 (E)

2

Contents Page

Foreword ..............................................................................................................................................................3


EN ISO 13015:2013 (E)

3

Foreword

This document (EN ISO 13015:2013) 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 2014, and conflicting national standards shall be withdrawn at the latest by February 2014.

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.

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 13015:2013 has been approved by CEN as EN ISO 13015:2013 without any modification.


© ISO 2013

Woven fabrics — Distortion — Determination of skew and bowÉtoffes tissées — Déformation — Détermination de l’écart angulaire et du cintrage

INTERNATIONAL STANDARD

ISO13015

First edition2013-08-01

Reference numberISO 13015:2013(E)


ISO 13015:2013(E)

ii © ISO 2013 – All rights reserved

COPYRIGHT PROTECTED DOCUMENT

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ISO 13015:2013(E)

© ISO 2013 – All rights reserved iii

Contents Page

Foreword ........................................................................................................................................................................................................................................ivIntroduction ..................................................................................................................................................................................................................................v1 Scope ................................................................................................................................................................................................................................. 12 Normative references ...................................................................................................................................................................................... 13 Termsanddefinitions ..................................................................................................................................................................................... 14 Principle ........................................................................................................................................................................................................................ 15 Apparatus ..................................................................................................................................................................................................................... 16 Conditioning and testing atmosphere ............................................................................................................................................ 27 Test specimens........................................................................................................................................................................................................ 28 Procedure..................................................................................................................................................................................................................... 2

8.1 General ........................................................................................................................................................................................................... 28.2 Preparation by marking .................................................................................................................................................................. 28.3 Preparation by fraying ...................................................................................................................................................................... 28.4 Determination of the overall skew and local skew .................................................................................................. 2

9 Calculation and expression of the results .................................................................................................................................. 69.1 Calculation for the overall skew ............................................................................................................................................... 69.2 Calculation with two triangles for local skew .............................................................................................................. 69.3 Calculation with three triangles for local skew .......................................................................................................... 7

10 Test report ................................................................................................................................................................................................................... 7Annex A (normative) Weft bow and warp bow determination ................................................................................................. 8Bibliography .............................................................................................................................................................................................................................10


ISO 13015:2013(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. 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. 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.

The committee responsible for this document is ISO/TC 38, Textiles, Subcommittee SC 24, Conditioning atmospheres and physical tests for textile fabrics.

iv © ISO 2013 – All rights reserved


http://www.iso.org/directiveshttp://www.iso.org/patents

ISO 13015:2013(E)

Introduction

Textile and clothing manufacturers give a lot of importance to knowledge of the widthway distortion. In the case of woven fabrics with patterns or in which the weft threads are rather visible, the appearance of a textile article could be compromised.

With some rare exceptions, the two sets of threads in woven textile fabrics are intended to lie straight and at right angles. If a fabric does not meet either of these requirements, it is described as distorted. Difficulties in making up may then arise and the made-up article may fail to function properly. The distortion may also detract from the appearance of fabric with checked patterns or coloured weft effects such as plaids or stripes. It is therefore desirable to have a means of specifying and measuring the distortion in woven fabric in terms of bow and skew.

© ISO 2013 – All rights reserved v


Woven fabrics — Distortion — Determination of skew and bow

1 Scope

This International Standard specifies a method for the determination of the distortion of a woven fabric in which the weft yarns are, in principle, perpendicular to the warp yarns.

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 139, Textiles — Standard atmospheres for conditioning and testing

3 Termsanddefinitions

For the purposes of this document, the following terms and definitions apply.

3.1bowcurvature of the warp or weft of fabrics

3.2skewfabric condition where the picks, although straight, are not at right angles to the ends

4 Principle

In a piece of the woven fabric, laid on a flat surface and without tension, skew and bow are characterized as follows.

Overall skew is based on the determination of the distance between one end of a weft yarn and the point on the same edge intersected by a normal perpendicular from the other end of the weft yarn to the fabric edge, in proportion to the distance between two points at which the normal perpendicular to the fabric edge intersects both edges (woven fabric width), expressed as a percentage ratio.

Local skew is determined as the distance between one end of a weft yarn to its perpendiculars to the warp running at right angles to a portion of the fabric length.

Weft bow is determined (see Annex A) as the total perpendicular distance by which a weft yarn deviates from a straight line joining both ends of the weft yarn.

Warp bow is determined (see Annex A) as the greatest perpendicular distance between the edge of the fabric and a straight line joining two selected points on the edge.

NOTE Any special treatment of the laboratory sample, i.e. washing or cleaning, could be as agreed upon between the interested parties and be described in the test report (see Bibliography for examples of standardized methods).

5 Apparatus

5.1 Set square, or similar device with at least two sides at right angles, graduated in millimetres.

INTERNATIONAL STANDARD ISO 13015:2013(E)

© ISO 2013 – All rights reserved 1


M257780i.pdfSection sec_1Section sec_2Section sec_3Section sec_3.1Section sec_3.2Section sec_4Section sec_5Section sec_5.1Section sec_5.2Section sec_5.3Section sec_6Section sec_7Section sec_7.1Section sec_7.2Section sec_7.3Section sec_8Section sec_8.1Section sec_8.2Section sec_8.3Section sec_8.4Section sec_8.4.1Section sec_8.4.2Table tab_aFigure fig_1Section sec_8.4.3Table tab_bFigure fig_2Section sec_8.4.4Table tab_dFigure fig_7Section sec_8.4.5Table tab_eFigure fig_8Section sec_9Section sec_9.1Section sec_9.2Section sec_9.3Section sec_10Annex sec_AAnnex sec_A.1Annex sec_A.1.1Annex sec_A.1.1.1Annex sec_A.1.1.2Annex sec_A.1.1.3Annex sec_A.1.2Table tab_fFigure fig_A.1Table tab_gFigure fig_A.2Annex sec_A.2Annex sec_A.2.1Annex sec_A.2.1.1Annex sec_A.2.1.2Annex sec_A.2.2Table tab_hFigure fig_A.3Reference ref_1Reference ref_2Reference ref_3Reference ref_4Reference ref_5Reference ref_6Reference ref_7Reference ref_8Reference ref_9Reference ref_10Reference ref_11Reference ref_12Reference ref_13ForewordIntroduction1Scope2Normative references3Terms and definitions4Principle5Apparatus6Conditioning and testing atmosphere7Test specimens8Procedure8.1General8.2Preparation by marking8.3Preparation by fraying8.4Determination of the overall skew and local skew9Calculation and expression of the results9.1Calculation for the overall skew9.2Calculation with two triangles for local skew9.3Calculation with three triangles for local skew10Test reportAnnex A(normative)

Weft bow and warp bow determinationBibliography