1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 24345:2012Resilient floor coverings Determination of peelresistance (ISO 24345:2006)BS EN ISO 24345:2012 BRITISH STANDARDNational forewordThis British Standard is the U
2、K implementation of EN ISO 24345:2012. It supersedes BS EN 431:1994 (R10) which is with-drawn.The UK participation in its preparation was entrusted to Technical Committee PRI/60, Resilient floor coverings.A list of organizations represented on this committee can be obtained on request to its secreta
3、ry.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 75241 4 ICS 97.150 Compliance with a British Standard cannot co
4、nfer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 24345 March 2012 ICS 97.150 Super
5、sedes EN 431:1994English Version Resilient floor coverings - Determination of peel resistance (ISO 24345:2006) Revtements de sol rsilients - Dtermination de la rsistance au pelage (ISO 24345:2006) Elastische Bodenbelge - Bestimmung des Schlwiderstandes (ISO 24345:2006) This European Standard was app
6、roved by CEN on 24 December 2011. 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 natio
7、nal 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 langua
8、ge 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvi
9、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000
10、 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 24345:2012: EBS EN ISO 24345:2012EN ISO 24345:2012 (E) 3 Foreword The text of ISO 24345:2006 has been prepared by Technical Committee ISO/TC 219 “Floor coverings” o
11、f the International Organization for Standardization (ISO) and has been taken over as EN ISO 24345:2012 by Technical Committee CEN/TC 134 “Resilient, textile and laminate floor coverings” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard
12、, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN
13、and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 431:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
14、 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, Turkey and the United Kingd
15、om. Endorsement notice The text of ISO 24345:2006 has been approved by CEN as a EN ISO 24345:2012 without any modification. BS EN ISO 24345:2012ISO 24345:2006(E) ISO 2006 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national st
16、andards 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 o
17、rganizations, 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 giv
18、en 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
19、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 24345 was prepared by Technical Committee ISO/TC 219, F
20、loor coverings. BS EN ISO 24345:2012BS EN ISO 24345:2012INTERNATIONAL STANDARD ISO 24345:2006(E) ISO 2006 All rights reserved 1Resilient floor coverings Determination of peel resistance 1 Scope This International Standard describes a method for determining the resistance against separation of two la
21、yers of a resilient floor covering by peeling. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 peel resistance force applied to the width of one layer of a resilient floor covering which separates it from the adjacent layer 3 Principle The fo
22、rce required to separate layers of a test piece by peeling is measured. 4 Apparatus 4.1 Tensile testing machine, with suitable load cell and a recording device. The machine shall be capable of maintaining the testing speed required (see 7.2). 5 Sampling and selection of specimens Take a representati
23、ve sample from the available material. Take six test pieces at regular distances from the sample, the distance between the outer edge of the sample and the nearest edge of the test piece being at least 100 mm, of minimum length 150 mm and width (50 1) mm, three cut in the machine direction and three
24、 cut in the transverse direction (see Figure 1). BS EN ISO 24345:2012ISO 24345:2006(E) 2 ISO 2006 All rights reservedDimensions in millimetres Figure 1 Sampling and selection of specimens 6 Atmosphere for conditioning and testing Condition the test piece(s) at a temperature of (23 2) C and relative
25、humidity of (50 5) % for a minimum of 24 h. Maintain these conditions when conducting the test. Take notice of 7.1. 7 Test procedure 7.1 Effect the initial separation of the two layers over a sufficient length to permit the test piece to be fixed in the jaws of the tensile testing machine (Figure 2)
26、. If a solvent is used for initial separation, remove it by storing the test piece in a ventilated oven at 60 C for two hours, followed by normal conditioning as described in Clause 6. BS EN ISO 24345:2012ISO 24345:2006(E) ISO 2006 All rights reserved 3Key 1 test piece 2 direction of pull Figure 2 S
27、pecimen fixing 7.2 Place the test piece in the jaws (which are approximately 50 mm apart) of the tensile testing machine so that the tension will be applied evenly over the width of the test piece. Set the machine and its recording device in operation such that the speed of separation is (100 5) mm/
28、min. Record the separation force which continues beyond the initial separation. 7.3 Repeat the test on the remaining test pieces. 8 Calculation and expression of results Ignore the first and last quarter of the full length of the graph for each test piece. Spread a screen as shown in Figure 3 over t
29、he graph, and record the forces at the cross points in newtons. Calculate the mean value of the peel resistance (2.1) for each test piece rounded to the nearest 5 N. Also calculate the mean value of the peel resistance for each direction from the measurements taken and express the result rounded to
30、the nearest 5 N in newtons per 50 mm. BS EN ISO 24345:2012ISO 24345:2006(E) 4 ISO 2006 All rights reservedKey X Trace length, % Y Force, newtons 1 screen acrosspoints Figure 3 Schematic diagram of a typical trace 9 Precision statement An interlaboratory test will be conducted to determine the precis
31、ion of this method. 10 Test report The test report shall include the following information: a) a statement that the tests were performed in accordance with this International Standard (ISO 24345:2006); b) the date(s) at which the tests were carried out; c) complete identification of the product test
32、ed, including type, source, colour, and manufacturers reference number(s); d) the previous history of the sample; e) any deviation from this International Standard which may have effected the results; f) if normal delamination occurred: 1) the mean value of the peel resistance for each direction; 2)
33、 the minimum values for each direction; g) if normal delamination did not occur, the manner in which the test pieces failed to delaminate. BS EN ISO 24345:2012ISO 24345:2006(E) ISO 2006 All rights reserved 5Bibliography 1 EN 431, Resilient floor coverings Determination of peel resistance 2 JIS A 145
34、4, Test Methods Resilient floor coverings, Paragraph 6.15: Peel strength test This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services. It pres
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