Determination of the elasticity of fabrics - Part 3: Narrow fabrics
This standard describes the test methods which can be used to measure the elasticity and related properties of narrow fabrics. Two methods are itemised: one for the purpose of product quality assurance (method A), and the other for product performance when in use (method B).
Bestimmung der Elastizität von Flächengebilden - Teil 3: Schmaltextilien
Diese Norm beschreibt die Prüfverfahren, die zur Messung der Elastizität und zugehöriger Eigenschaften von Schmaltextilien verwendet werden können. Zwei Verfahren werden genannt, von denen das eine (Verfahren A) der Sicherung der Produktqualität und das andere (Verfahren B) den Gebrauchseigenschaften des Produktes dient.
Détermination de l'élasticité des étoffes - Partie 3 : Etoffes étroites
La présente norme décrit des méthodes d'essai qui peuvent être utilisées pour mesurer l'élasticité et les propriétés afférentes des étoffes étroites. Deux méthodes sont décrites, l'une à destination de l'assurance qualité du produit (méthode A), l'autre à la performance du produit en conditions d'utilisation (méthode B).
Ugotavljanje elastičnosti ploskovnih tekstilij - 3. del: Ozki trakovi
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Determination of the elasticity of fabrics - Part 3: Narrow fabricsNRYLDétermination de l'élasticité des étoffes - Partie 3 : Etoffes
étroitesBestimmung der Elastizität von Flächengebilden - Teil 3: SchmaltextilienTa slovenski standard je istoveten z:EN 14704-3:2006SIST EN 14704-3:2007en;fr;de59.080.30TkanineTextile fabricsICS:SLOVENSKI
STANDARDSIST EN 14704-3:200701-julij-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14704-3December 2006ICS 59.080.30 English VersionDetermination of the elasticity of fabrics - Part 3: Narrow fabricsDétermination de l'élasticité des étoffes - Partie 3 : Etoffes étroitesBestimmung der Elastizität von Flächengebilden - Teil 3:SchmaltextilienThis European Standard was approved by CEN on 28 October 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14704-3:2006: E
EN 14704-3:2006 (E) 2 Contents Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.4 4 Principle.6 4.1 Method A.6 4.2 Method B.6 5 Sampling.6 6 Apparatus.6 6.1 CRE testing machine.6 6.2 Line clamps.7 6.3 Equipment, for cutting test specimens to the required dimensions.7 6.4 Calibrated metal rule, graduated in mm.7 7 Atmosphere for conditioning and testing.7 8 Preparation of test specimens.7 8.1 General.7 8.2 Test specimen preparation.7 9 Procedure.7 9.1 Method A.7 9.2 Method B.10 10 Test report.14 Annex A (informative)
Example of a typical cycling graph for method A.15 Annex B (informative)
Procedure for sampling.16 Annex C (informative)
Clamping and holding devices.17
EN 14704-3:2006 (E) 3 Foreword This document (EN 14704-3:2006) has been prepared by 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 June 2007, and conflicting national standards shall be withdrawn at the latest by June 2007. The reasons behind developing this standard are due to technical advancement in yarn and fabric structures and properties, which increases product range and developments. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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.
EN 14704-3:2006 (E) 4
1 Scope This standard describes the test methods which can be used to measure the elasticity and related properties of narrow fabrics.
Two methods are itemised: one for the purpose of product quality assurance (method A), and the other for product performance when in use (method B).
2 Normative references The following referenced documents are indispensable for the application 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. EN ISO 139, Textiles – Standard atmospheres for conditioning and testing (ISO 139:2005) EN ISO 7500-1, Metallic materials – Verification of static uniaxial testing machines – Part 1: Tension/compression testing machines – Verification and calibration of the force-measuring system (ISO 7500-1:2004) EN ISO 10012, Measurement management systems - Requirements for measurement processes and measuring equipment (ISO 10012:2003) 3 Terms and definitions For the purposes of this European standard the following terms and definitions apply. 3.1 narrow fabric woven or knitted construction intended for use as a trim, binding, edging, strapping or harness, and designed to be used in its full width 3.2 elasticity property of a material by virtue of which it tends to recover its original size and shape immediately after removing the force causing deformation 3.3 constant-rate-of-extension (CRE) testing machine tensile testing machine provided with one clamp which is stationary and another clamp, which moves with a constant speed throughout the test, the entire testing system being virtually free from deflection 3.4 strip test specimen test specimen in which the full width is gripped in the jaws of the testing machine 3.5 gauge length distance between the two effective clamping points of a testing device, for this method where line clamps are employed, it is the distance between the two contact points 3.6 slack mounting insertion of a strip test specimen in the line clamps of the upper jaw, allowing it to hang freely under its own weight, guided by the hand to ensure perpendicular alignment to the line of pulling force, without any force being applied
EN 14704-3:2006 (E) 5 3.7 initial length length of the test specimen between the two effective clamping points, before testing 3.8 extension increase in length of a test specimen produced by a force as a result of testing, expressed in mm 3.9 elongation ratio of the extension of the test specimen to its initial length, expressed as a % 3.10 maximum force force recorded in N at the position when a test specimen is taken to a fixed extension 3.11 maximum extension extension recorded in mm at the position when a test specimen is taken to a fixed load 3.12 modulus force measured at a given elongation on either the load or unload curves 3.13 cycle process whereby a fabric is taken from the gauge length to a fixed load or fixed extension or elongation, and returned to gauge length 3.14 force decay due to time loss of force measured over time when a test specimen is stretched to a specified elongation or force and held in this position for a given time period NOTE The decay in force is expressed as a % of the original force recorded at the specified position (see Annex A).
3.15 force decay due to exercising loss of force, calculated and expressed as a percentage, as measured and recorded at the same elongation point on two different cycles when the test specimen is cycled several times between zero and a specified elongation (see Annex A) 3.16 un-recovered elongation ratio of the unrecovered extension of the test specimen after cycling, to a specified force or extension, to its initial length, expressed as a % 3.17 recovered elongation unrecovered elongation, expressed as a %, subtracted from 100 % 3.18 elastic recovery recovered elongation expressed as a % of the total elongation
EN 14704-3:2006 (E) 6 4 Principle 4.1 Method A A narrow test specimen of specified length dimensions is extended at a constant rate to a specified force for an agreed number of cycles. Several characteristics can be measured to determine the performance and profile of the narrow fabric. 4.2 Method B A narrow test specimen of specified length dimensions is extended at a constant rate to a specified force and elongation for 1 cycle of a specified sequence. Characteristics are measured to show the performance of the narrow fabric in use. 5 Sampling Narrow fabric samples shall be selected in accordance with the product specification. In the absence of a product specification for the fabric, the sampling method given in Annex B may be used. 6 Apparatus 6.1 CRE testing machine Metrological confirmation system of the tensile testing machine shall be in accordance with EN ISO 10012. The constant-rate-of-extension testing machine shall conform to the following: a) Tensile testing machine shall be provided with the means for indicating or recording the force and elongation values when cycling between gauge length and either a fixed load or fixed extension.
Under conditions of use, the accuracy of the apparatus shall be at least class 1 of EN ISO 7500-1.
The error of the indicated or recorded maximum force at any point in the range in which the machine