1、November 2008DEUTSCHE NORM English price group 6No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 59.080.30!$TJD“1493933
2、www.din.deDDIN EN 15598Textiles Terry fabrics Test method for the determination of the resistance to pile loopextractionEnglish version of DIN EN 15598:2008-11Textilien Frottiergewebe Prfverfahren zur Bestimmung der Bestndigkeit von Polschlingen gegen HerausziehenEnglische Fassung DIN EN 15598:2008-
3、11www.beuth.deDocument comprises 8 pagesDIN EN 15598:2008-11 2 National foreword This standard has been prepared by Technical Committee CEN/TC 248 “Textiles and textile products” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Texti
4、l und Textil-maschinen (Textiles and Textile Machinery Standards Committee), Technical Committee NA 106-01-05 AA Hand- und Putztcher. EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15598August 2008ICS 59.080.30English VersionTextiles - Terry fabrics - Test method for the determination of theresis
5、tance to pile loop extractionTextiles - Tissus ponges - Mthode de dtermination de larsistance des boucles du velours au dbouclageTextilien - Frottiergewebe - Prfverfahren zur Bestimmungder Bestndigkeit von Polschlingen gegen HerausziehenThis European Standard was approved by CEN on 25 July 2008.CEN
6、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 applica
7、tion 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has t
8、he same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal
9、,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserv
10、edworldwide for CEN national Members.Ref. No. EN 15598:2008: EEN 15598:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle of test4 5 Equipment 4 6 Sampling.4 7 Conditioning.5 8 Test procedure.5 9 Calculation of results 5 10 Test report 5 DIN
11、EN 15598:2008-11 EN 15598:2008 (E) 3 Foreword This document (EN 15598:2008) has been prepared by Technical Committee CEN/TC 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
12、of an identical text or by endorsement, at the latest by February 2009, and conflicting national standards shall be withdrawn at the latest by February 2009. 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
13、 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, Cyprus, Czech Republic, Denmark, Eston
14、ia, 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.This document is currently submitted to the Formal Vote. DIN EN 15598:20
15、08-11 EN 15598:2008 (E) 4 1 Scope This European Standard specifies a test method to determine the force needed to withdraw a loop from the foundation of a terry fabric. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated referen
16、ces, 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) 3 Terms and definitions For the purposes of this document, the followin
17、g terms and definitions apply. 3.1 pile surface effect on a fabric formed by tufts or loops of yarns that stand up from the body of the fabric 3.2 terry fabric (woven) warp-pile fabric in which loops are created, without positive assistance, by varying the relative positions of the fell and the reed
18、, whereby a high tension is applied to the ground warp and a very low tension to the pile warp 3.3 constant-rate-of-extension testing machine (CRE machine) tensile testing machine provided with one stationary clamp and another clamp, which moves at a constant speed throughout the test 4 Principle of
19、 test An increasing load is exerted on a loop until it loosens and pulls along a length of successive loops. The force needed to perform this is the resistance to pile loop extraction. 5 Equipment A CRE tensile testing machine, equipped with a stress and strain recording instrument, shall be used. T
20、he speed of the moving clamp shall be (100 10) mm/min. 6 Sampling The sample shall be representative for the material tested. It shall not contain visible defects, wrinkles or folds, unless explicitly needed for the examination. At least five test specimens of (120 5) mm (25 2) mm shall be taken fro
21、m the sample. The specimens orientation shall be in line with the yarn arrangement which forms the loop. DIN EN 15598:2008-11 EN 15598:2008 (E) 5 The test specimens shall be selected on a diagonal line across the width of the sample, if possible at least 100 mm from the edges of the sample. If the t
22、erry cloth contains un-looped areas and it is not possible to obtain test specimens between them, the test specimens shall be taken with their centre as far from the un-looped area as possible. 7 Conditioning Conditioning of test specimens and testing shall be carried out in an atmosphere according
23、to EN ISO 139. 8 Test procedure Fold the test specimen double with its short sides against each other and the fold along a row of loops. Attach the folded specimen to one jaw of the tensile testing machine, so that about 10 mm of the fabric will be held by the jaw. Pass a yarn or hook through a loop
24、 in the middle loop row at the fold and attach it to the other jaw of the machine. The hook shall be positioned with the centre of the jaw in the line of the applied force. The threads of a double/multiple wound yarn count as one loop. The test specimen is slightly stretched as it is attached to the
25、 jaws to prevent the loop yarn from slipping out. Start the tensile testing machine and pull the loop at a speed of 100 mm/min. The loop shall be aligned with the pull direction without being twisted. Exert the stress until the distance of the jaws has grown 10 mm. Pull one loop yarn from each test
26、specimen. 9 Calculation of results The resistance to pile loop extraction of a test specimen is the force obtained from the recorded graph at the point where the distance of the jaws has grown 10 mm (see Figure 1a). Force readings shall be carried out to the nearest 0,05 N. However, if the graph sho
27、ws an earlier peak before reaching this point, the reading at that peak shall be used (see Figure 1b). The term peak refers to a point of the graph which is higher than the adjacent points on each side. However, force peaks, which are lower than the force at 10 mm jaw distance, shall be discarded (s
28、ee Figure 1c). The average of the individual test results shall be calculated. 10 Test report The test report shall contain the following information: a) reference to this European Standard, i.e. EN 15598; b) description and designation of the tested fabric; c) the test results of all individual tes
29、t specimens, in Newtons; d) the average resistance to pile loop extraction, in Newtons; e) any deviation from this European Standard and any incident likely to have affected the result. DIN EN 15598:2008-11 EN 15598:2008 (E) 6 yzPxyzPxyzPxa) Example b) Example c) Example Key y distance between jaws x force N z distance 10 mm P point to take the reading Figure 1 Examples of force versus displacement curves DIN EN 15598:2008-11
