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1、BRITISH STANDARD BS EN 662:1995 Resilient floor coverings Determination of curling on exposure to moisture The European Standard EN 662:1994 has the status of a British Standard BS EN 662:1995 This British Standard, having been prepared under the direction of the Building and Civil Engineering Secto
2、r Board (B/-), was published under the authority of the Standards Board and comes into effect on 15 February 1995 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference PRI/60 Draft for comment 92/38636 DC ISBN 0 580 23246 8 Cooperating organizations The Eu
3、ropean Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standard FinlandSuomen Sta
4、ndardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione Luxembou
5、rgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisatio
6、n United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments BS EN 662:1995 BSI 11-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 6623 National annex NA (informative) Committees responsibleInside back
7、 cover BS EN 662:1995 ii BSI 11-1999 National foreword This British Standard has been prepared by Technical Committee PRI/60, Resilient floor coverings, and is the English language version of EN 662:1994 Resilient floor coverings Determination of curling on exposure to moisture, published by the Eur
8、opean Committee for Standardization (CEN). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations
9、. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendme
10、nt table on the inside front cover. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 662 November 1994 ICS 91.180 Descriptors: Floor coverings, tests, deformation, humidity English version Resilient floor coverings Determination of curling on exposure to moisture Revtements de sol rsilients Dter
11、mination de lincurvation lhumidit Elastische Bodenbelge Bestimmung der Schsselung bei Feuchteeinwirkung This European Standard was approved by CEN on 1994-11-10. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
12、 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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, Ger
13、man). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France,
14、Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 C
15、opyright reserved to CEN members Ref. No. EN 662:1994 E EN 662:1994 2 BSI 11-1999 Foreword This European Standard was prepared by Technical Committee CEN/TC 134, Resilient and textile floor coverings, the secretariat of which is held by BSI. This European Standard shall be given the status of a nati
16、onal standard, either by publication of an identical text or by endorsement, at the latest by May 1995, and conflicting national standards shall be withdrawn at the latest by May 1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Sta
17、ndard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword2 1Scope3 2Definition3 3Principle3 4Apparatus and materials3 5Sampling and preparation of test
18、pieces3 6Conditioning3 7Procedure3 8Calculation and expression of results3 9Test report3 EN 662:1994 BSI 11-19993 1 Scope This European Standard specifies a method for determining the vertical deformation of a resilient floor covering when in contact with a wet surface. 2 Definition For the purposes
19、 of this standard the following definition applies. curl the vertical deformation of a resilient floor covering on exposure to moisture 3 Principle A test piece is laid on a moistened cellulose paper. At the beginning and at the end of the test the vertical distance between the upper side of a suppo
20、rt plate and the underside of a test piece is measured at the four corners. 4 Apparatus and materials 4.1 Non-absorbent support plates e.g. glass, metal, flat and rigid, of minimum dimensions 150 mm 150 mm, thickness U 6 mm, with polished, unbevelled edges. 4.2 Containers of a size such that the sup
21、port plate may be immersed to within 3 mm to 5 mm of its upper face. 4.3 A swivelling platform to carry the containers positioned in front of a travelling microscope. 4.4 A travelling microscope with the horizontal axis of the eyepiece level with the upper surface of the support plate, giving and en
22、largement of 20 and having a precision of reading of 0,05 mm. 4.5 Capillary material placed on each support plate, consisting of neutral cellulose paper, e.g. make-up removal tissue normally weighing 17 g/m2, used in double thickness as supplied, and minimum dimensions 210 mm 210 mm. 4.6 Test liquid
23、, e.g. distilled water containing 0,30 % pure sodium alkyl sulfate. 5 Sampling and preparation of test pieces Take a representative sample from the available material. Take five flat test pieces at equal distances across the sample, the distance between the outer edge of the sample and the nearest e
24、dge of the test piece being at least 100 mm, of dimensions (150 5) mm (150 5) mm. 6 Conditioning Condition the test pieces at a temperature of (23 2) C and relative humidity (50 5) % for a minimum of 24 h. Maintain these conditions when carrying out the test. 7 Procedure Spread the cellulose paper w
25、hich has been moistened with the test liquid over the support plates in the container, taking care to avoid stretching it or folding it or allowing bubbles to form. Burst small bubbles with a pin. Make notches in the paper at each corner over a radius of approximately 10 mm. Place the test piece ont
26、o the paper, with the wear surface uppermost, ensuring that there is no overlap. Place the container on the swivelling platform. In turn, measure the vertical distance between the upper surface of the support plate and the underside of the test piece. NOTEThe mean of the four readings represents the
27、 initial measurement; these four readings should not differ by more than 0,25 mm. Adjust the level of the liquid in the container and top up during the test as necessary. Repeat the measurements of the vertical distance 48 h after the beginning of the test. 8 Calculation and expression of results Ca
28、lculate the curl or curvature of the test piece from the difference between the measurement after 48 h and the initial measurement. Calculate the mean value of the four lowest recorded curvature values from the five test pieces and express the result in millimetres to one decimal place. 9 Test repor
29、t The test report shall contain the following information: a) reference to this standard i.e. EN 662; b) a complete identification of the product tested, including type, source and manufacturers reference numbers; c) the previous history of the sample; d) the mean of the four lowest values for curl;
30、 e) any deviations from this standard which may have affected the results. 4 blank BS EN 662:1995 BSI 11-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted to Technical Committee PRI/60, Resilient fl
31、oor coverings, upon which the following bodies were represented: British Adhesives and Sealants Association British Floor Covering Manufacturers Association British Railways Board British Rubber Manufacturers Association Ltd. Consumer Policy Committee of BSI Contract Flooring Association Cork Indust
32、ry Federation Department of the Environment (British Board of Agrment) Department of the Environment (Building Research Establishment) Federation of Plastering and Drywall Contractors Institute of Chartered Arbitrators Royal Institute of British Architects Wood Panel Products Federation Coopted memb
33、ers BS EN 662:1995 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revision
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