1、April 2012 Translation by DIN-Sprachendienst.English price group 6No part of this translation 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 9
2、7.150!$3“1882716www.din.deDDIN EN ISO 23997Resilient floor coverings Determination of mass per unit area (ISO 23997:2007)English translation of DIN EN ISO 23997:2012-04Elastische Bodenbelge Bestimmung der flchenbezogenen Masse (ISO 23997:2007)Englische bersetzung von DIN EN ISO 23997:2012-04Revtemen
3、ts de sol rsilients Dtermination de la masse surfacique (ISO 23997:2007)Traduction anglaise de DIN EN ISO 23997:2012-04SupersedesDIN EN 430:1994-11www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.7 03.12 DIN EN ISO 23997:2012-04 2 A
4、 comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 219 “Floor coverings” (Secretariat: KATS, Korea) and has been taken over as EN ISO 23997:2012 by Technical Committee CEN/TC 134 “Resilient, textile and laminate floor coverings”, (Se
5、cretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-04-05 AA Bodenbelge. Amendments This standard differs from DIN EN 430:1994-11 as follows: a) a precision statement has
6、 been included (Clause 9); b) the standard has been editorially revised. Previous editions DIN EN 430: 1994-11 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 23997 February 2012 ICS 97.150 Supersedes EN 430:1994English Version Resilient floor coverings - Determination of mass per unit area
7、 (ISO 23997:2007) Revtements de sol rsilients - Dtermination de la masse surfacique (ISO 23997:2007) Elastische Bodenbelge - Bestimmung der flchenbezogenen Masse (ISO 23997:2007) This European Standard was approved by CEN on 31 December 2011. CEN members are bound to comply with the CEN/CENELEC Inte
8、rnal 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
9、 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 ve
10、rsions. 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, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
11、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 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwi
12、de for CEN national Members. Ref. No. EN ISO 23997:2012: EContents EN ISO 23997:2012 (E) DIN EN ISO 23997:2012-04 2 Page Foreword 3 1 Scope 4 2 Terms and definitions .4 3 Principle 4 4 Apparatus .4 5 Atmosphere for conditioning and testing .4 6 Sampling and selection of specimens 4 7 Test procedure
13、.5 8 Calculation and expression of results .5 9 Precision statement .5 10 Test report 5 Foreword The text of ISO 23997:2007 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 23997:2012 b
14、y 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, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflic
15、ting 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 and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document
16、 supersedes EN 430:1994. 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,
17、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 23997:2007 has been approved by CEN as a EN ISO 23997:2012 without
18、 any modification. EN ISO 23997:2012 (E) DIN EN ISO 23997:2012-04 3 1 Scope This International Standard describes a method for determining the mass per unit area of a resilient floor covering. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 m
19、ass per unit area quotient of mass and area NOTE Mass per unit area is expressed in grams per square metre. 3 Principle A number of specimens of defined size are taken from a resilient floor-covering sample. The specimens are weighed and, from this, the mass per unit area of the floor covering is ca
20、lculated. 4 Apparatus 4.1 Balance, capable of weighing a specimen to the nearest 10 mg. 4.2 Calliper gauge, capable of measuring the size of the specimen to the nearest 0,05 mm. 5 Atmosphere for conditioning and testing Condition the specimen at a temperature of 23 2 C and a relative humidity of 50
21、5 % for a minimum of 24 h. Maintain these conditions when carrying out the test. 6 Sampling and selection of specimens Take a representative sample from the available material. Take five specimens, at equal distances from the sample, the distance between the outer edge of the sample and the nearest
22、edge of the specimen being at least 100 mm, either square or round of at least 0,01 m2in area, or from individual tiles. If necessary, clean the edges of the specimen. Full tiles may also be used. EN ISO 23997:2012 (E) DIN EN ISO 23997:2012-04 4 7 Test procedure For each specimen, measure and record
23、 the surface dimensions to the nearest 0,1 mm. Weigh each specimen separately and record the mass to the nearest 10 mg. 8 Calculation and expression of results Calculate the mass per unit area, in grams per square metre, using the following formula: mAwhere m is the mass of the specimen, in grams; A
24、 is the area of the specimen, in square metres. For results up to and equal to 1 000 g/m2, express to the nearest 5 g/m2. For results over 1 000 g/m2, express to the nearest 10 g/m2. Calculate the mean value for the mass per unit area for the five specimens, expressed to the nearest gram. 9 Precisio
25、n statement A round-robin test will be conducted to determine the precision of this method 10 Test report The test report shall contain the following information: a) a statement that the tests were performed in accordance with this International Standard (ISO 23997); b) complete identification of th
26、e product tested, including type, source, colour and manufacturers reference numbers; c) previous history of the sample; d) the mean value for the mass per unit area; e) any deviation from this International Standard, which may have affected the results. EN ISO 23997:2012 (E) DIN EN ISO 23997:2012-04 5
