1、BRITISH STANDARDResilient floor coverings Determination of mass per unit areaICS 97.150nullnull nullnullnullnullnullnullnull nullnullnullnullnullnullnull nullnullnull nullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnull nullnullnull
2、nullnullnullnullnullnull nullnullnullBS EN ISO23997:2012This British Standard is the UK implementation of EN ISO 23997:2012.It is identical to ISO 23997:2007. It supersedes BS ISO 23997:2007 and BS EN 430:1994, which are withdrawn. The UK participation in its preparation was entrusted to Technical C
3、ommittee PRI/60, Resilient floor coverings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a Br
4、itish Standard cannot confer immunity from legal obligations.BS EN ISO 23997:2012This British Standard waspublished under the authorityof the Standards Policy andStrategy Committeeon 31 January 2008 The British Standards Institution 2012. Published by BSI Standards Limited 2012.Amendments/corrigenda
5、 issued since publicationDate Comments 29 February 2012This corrigendum renumbers BS ISO 23997:2007 as BS EN ISO 23997:2012ISBN 978 0 580 75248 3EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 23997 February 2012 ICS 97.150 Supersedes EN 430:1994English Version Resilient floor coverings - D
6、etermination of mass per unit area (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 t
7、o 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 national standards may be obtained on application to the CEN-C
8、ENELEC 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 language and notified to the CEN-CENELEC Management Centre has
9、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, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pol
10、and, 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 Brussels 2012 CEN All rights of exploitation in any form
11、 and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 23997:2012: EEN ISO 23997:2012 (E) 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 o
12、ver as EN ISO 23997:2012 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, either by publication of an identical text or by endorsement, at the latest b
13、y 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 and/or CENELEC shall not be held responsible for identifying any or all such pa
14、tent rights. This document 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,
15、 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 Kingdom. Endorsement notice The text of ISO 23997:2007 has been approved by CEN as a
16、 EN ISO 23997:2012 without any modification. 2 BS EN ISO 23997:20121Resilient floor coverings Determination of mass per unit area 1 Scope This International Standard describes a method for determining the mass per unit area of a resilient floorcovering. 2 Terms and definitions For the purposes of th
17、is document, the following terms and definitions apply.2.1 mass 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, f
18、rom this, the mass per unit area of the floor covering is calculated. 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 specim
19、en at a temperature of 23 2 C and a relative humidity of 50 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 di
20、stance between the outer edge of the sample and the nearest edge of the specimen being atleast 100 mm, either square or round of at least 0,01 m 2 in area, or from individual tiles. If necessary, clean the edges of the specimen.Full tiles may also be used.EN ISO 23997:2012 (E) BS EN ISO 23997:20122
21、7 Test procedure For each specimen, measure and record 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 formu
22、la: mAwhere m is the mass of the specimen, in grams;A 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
23、five specimens, expressed to the nearest gram. 9 Precision statementA round-robin test will be conducted to determine the precision of this method 10 Test reportThe test report shall contain the following information:a) a statement that the tests were performed in accordance with this International
24、Standard (ISO 23997); b) complete identification of the product tested, including type, source, colour and manufacturers referencenumbers;c) previous history of the sample; d) the mean value for the mass per unit area; e) anydeviation from this International Standard, which may have affected the res
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