1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 24341:2012Resilient and textile floorcoverings Determination oflength, width and straightnessof sheet (ISO 24341:2006)BS EN ISO 24341:2012 BRITISH STANDARDNational fore
2、wordThis British Standard is the UK implementation of EN ISO24341:2012. It is identical to . It supersedes BS EN 426:1993 (R10) andBS ISO 24341:2006 which are withdrawnThe UK participation in its preparation was entrusted to TechnicalCommittee PRI/60, Resilient floor coverings.A list of organization
3、s represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978
4、0 580 75243 8ICS 59.080.60; 97.150Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2012.Amendments issued since publicationDate Text affectedEUROPEAN STAND
5、ARD NORME EUROPENNE EUROPISCHE NORM EN ISO 24341 February 2012 ICS 97.150 Supersedes EN 426:1993English Version Resilient and textile floor coverings - Determination of length, width and straightness of sheet (ISO 24341:2006) Revtements de sol rsilients et textiles - Dtermination de la longueur, de
6、la largeur et de la rectitude des ls (ISO 24341:2006) Elastische Bodenbelge - Bestimmung der Lnge, Breite und Geradheit einer Bahn (ISO 24341:2006) This European Standard was approved by CEN on 24 December 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulat
7、e 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 Stan
8、dard 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 nat
9、ional 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, Switze
10、rland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Re
11、f. No. EN ISO 24341:2012: EBS EN ISO 24341:2012EN ISO 24341:2012 (E) 3 Foreword The text of ISO 24341:2006 has been prepared by Technical Committee ISO/TC 219 “Floor coverings” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 24341:2012 by Technical Commi
12、ttee 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, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflicting national sta
13、ndards 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 and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 42
14、6:1993. 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,
15、 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 24341:2006 has been approved by CEN as a EN ISO 24341:2012 without any modification
16、. BS EN ISO 24341:2012ISO 24341:2006(E) ISO 2006 All rights reserved iiiForewordISO (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 ISOtechnic
17、al committees. Each member body interested in a subject for which a technical committee has beenestablished has the right to be represented on that committee. International organizations, governmental andnon-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with
18、 the InternationalElectrotechnical 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 Internati
19、onal Standardsadopted by the technical committees are circulated to the member bodies for voting. Publication as anInternational 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
20、 subject of patentrights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 24341 was prepared by Technical Committee ISO/TC 219, Floor coverings.BS EN ISO 24341:2012.iv BS EN ISO 24341:2012INTERNATIONAL STANDARD ISO 24341:2006(E) ISO 2006 All rights reserved 1Resil
21、ient and textile floor coverings Determination of length, width and straightness of sheet1ScopeThis International Standard specifies methods for determining the length, width and straightness of resilient ortextile floor coverings in sheet form.The straightness of resilient or textile floor is an im
22、portant consideration because the installed flooring will havean objectionable appearance if the machine direction edges of the sheet flooring deviate excessively from astraight line.2 Principle A test piece, resting on a flat surface, is measured at several points along its width and length.The str
23、aightness at the deviation point of a test piece of a resilient or textile sheet resting on a flat surface iscarried out by measuring the deviation from a virtual straight line passing through both ends of an edge.3 Apparatus3.1 Ruler or semi-rigid tape, accurate .3.2 Table or flat surface, of great
24、er width and, if possible, of greater length than the test piece to bemeasured.3.3 Measuring device, for measuring the length of the sheet to an accuracy of , e.g. a calibratedmeasuring wheel, steel tape.3.4 String line, length .4 Atmosphere for conditioning and testingCondition the test specimen fo
25、r at least at ambient room temperature and test in the same environment.5 Sampling and selection of specimensUse the entire roll of floor covering if both length and width are to be determined. If only width is to bedetermined, the test piece shall have an approximate length of .In order to determin
26、e the straightness of a sheet material, a test piece with a minimum length of shall betaken.0,05 %0,1 %10 m4h200 mm5mBS EN ISO 24341:2012ISO 24341:2006(E)2 ISO 2006 All rights reserved6 Test procedure6.1 Measurement of widthPlace the test piece on the table, with the wear layer upward. Measure the w
27、idth, using a ruler or semi-rigid tape(3.1), at three positions, equally divided over the length of the test piece, as shown in Figure 1.6.2 Measurement of length6.2.1 Lay out the sheet completely flat with the wear layer upward. Measure with measuring device (3.3) thelength in two places parallel t
28、o the axis of the test piece approximately from the edges, as shown inFigure 2.6.2.2 If the table is shorter than the length of the roll, take the measurement part by part. Unroll as far aspossible and follow the procedure as often as necessary to measure the full length.Alternatively, if the roll i
29、s significantly longer than the table, measure the length of the roll by re-rolling using adevice with a calibrated measuring wheel.aTest piece width.Test piece length.Figure 1 Measurement of widthl200 mmBS EN ISO 24341:2012ISO 24341:2006(E) ISO 2006 All rights reserved 36.3 Measurement of straightn
30、essLay out the test piece completely flat with the wear layer upward. For a measured length of to ,measure the straightness of an edge against the string line. Record the greatest deviation and the referencelength, as shown in Figure 3.Dimensions in millimetresTest piece length.Figure 2 Measurement
31、of lengthKey1 sheet2 string lineaReference length.bDeviation.Figure 3 Measurement using a string linel5 m 10 mBS EN ISO 24341:2012ISO 24341:2006(E)4 ISO 2006 All rights reserved7 Calculation and expression of resultsCalculate the effective width of the test piece as the smallest of the three measure
32、ments. Round off to thenearest and express the result in millimetres.Calculate the mean value of the two recorded lengths. Round off to the nearest and express the result inmetres.Express the results of the greatest deviation from straightness to the nearest .8 Precision statementAn interlaboratory
33、test will be conducted to determine the precision of this method.9 Test reportThe test report shall contain the following information:a) a statement that the tests were performed in accordance with this International Standard, i.e.ISO 24341:2006;b) complete identification of the product tested, incl
34、uding type, source, colour and manufacturers referencenumbers;c) previous history of the sample;d) mean value of width in millimetres;e) mean value of length in millimetres;f) value of straightness in millimetres and the reference length in metersg) temperature at which the test was conducted;h) pre
35、cision statement (see Clause 8);i) any deviation from this International Standard which may have affected the results.5mm0,05 m5mmBS EN ISO 24341:2012ISO 24341:2006(E) ISO 2006 All rights reserved 5Bibliography1 EN 426:1993, Resilient Floor Coverings Determination of width, length, straightness and
36、flatness ofsheet material 2 JIS A 1454, Test Methods Resilient floor coverings, section 6.4 Dimension of Floor SheetThis page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publicati
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