1、CEN ENxbh2 94 m 3404589 0087724 515 m BRITISH STANDARD - 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 CEN ENrbb2 94 3404589 0087811 848 Amd. No. BS EN 662 : 1995 Date Text affect
2、ed Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the foilowing countries: Austria Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembour
3、g Netherlands Norway Portugal Spain Sweden Switzerland United Kingdom Oesterreichisches Normungsinstitut Institut belge de normalisation Dansk Standard Suomen Standardisoimisliito, r. y. Association francaise de normalisation Deutsches Institut fr Normung e.V. Hellenic Organization for Standardizati
4、on Technological Institute of Iceland National Standards Authority of Ireland Ente Nazionale Italiano di Unificazione Inspection du Travail et des Mines Nederlands Normalisatie-instituut Norges Standardiseringsforbund Instituto Portugus da Qualidade Asociacin Espaola de Normalizacin y Certificacin S
5、tandardiseringskommissionen i Sverige Association suisse de normalisation British Standards Institution This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Board (B/-), was published under the authority of the Standards Board and comes into ef
6、fect on 15 February 1995 O BSI 1995 The following BSI references relate to the work on this standard: Committee reference PRI/GO Draft for comment 92138636 DC ISBN O 580 23246 8 Amendments issued since publication CEN ENrbb2 94 3404589 0087812 i84 BS EN 662 : 1995 Contents Cooperating organizations
7、Page Inside front cover National foreword i Fore word 2 Text of EN 662 3 National annex NA (informative) Committees remonsible Inside back cover National foreword This British Standard has been prepared by Rchnical Committee PRI/60, Resilient floor coverings, and is the English language version of E
8、N 662 : 1994 Resilient floor coverings - Determination of curling on exposure to moisture, published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunity from legal obligations. i CEN ENrbb2 94 = EUROPEAN STANDARD NORME EUROPENNE
9、EUROPISCHE NORM 3404589 0087813 bL0 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 - Dtermination de lincurvation lhumidit Elastische B
10、odenbelge - Bestimmung der Schsselung bei Feuchteeinwirkung This European Standard was approved by CEN on 1994-11-10. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without an
11、y alteration. Up- to-date lists and bibiographical references concerning such national standards may be obtained on application to the Centrai Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by
12、 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, Germany, Greece, Iceland, Ireland, Italy, Lux
13、embourg, 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 O 1994 Copyright reserved to CEN members Ref. No. E
14、N 662 : 1994 E - CEN ENhbb2 74 3404589 0087814 557 Page 2 EN 662 : 1994 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 national stand
15、ard, 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 CENKENELEC Internal Regulations, the foliowing countries are bound to implement this European Standard: Aust
16、ria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN EN*bb2 94 = 3404589 0087815 493 1 Scope This European Standard specifies a method for determining the vertical deformation o
17、f a resilient floor covering when in contact with a wet surface. 2 Definition For the purposes 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 t
18、he beginning and at the end of the test the vertical distance between the upper side of a support 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 x 150
19、mm, thickness I 6 mm, with polished, unbevelled edges. 4.2 Containers of a size such that the support 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
20、 horizontal axis of the eyepiece level with the upper surface of the support plate, giving and enlargement of 20 x 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 1
21、7 g/m2, used in double thickness as supplied, and minimum dimensions 210 mm x 210 mm. 4.6 ?I.st liquid, e.g. distilled water containing 0,30 % pure sodium alkyl sulfate. 5 Sampling and preparation of test pieces ILtke a representative sample from the available material. %ke five flat test pieces at
22、equal distances across 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 dimensions (150 k 5) mm x (150 f 5) mm. Page 3 EN 662 : 1994 6 Conditioning Condition the test pieces at a temperature of (23 I 2) OC and relative hum
23、idity (50 I 5) % for a minimum of 24 h. Maintain these conditions when carrying out the test. 7 Procedure Spread the cellulose paper which 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. B
24、urst small bubbles with a pin. Make notches in the paper at each corner over a radius of approximately 10 mm. Place the test piece onto 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 distanc
25、e between the upper surface of the support plate and the underside of the test piece. NOTE. The mean of the four readings represents the 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 nece
26、ssary. Repeat the measurements of the vertical distance 48 h after the beginning of the test. 8 Calculation and expression of results Calculate 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
27、four lowest recorded curvature values from the five test pieces and express the result in millimetres to one decimal place. 9 %st report The test report shall contain the following information: a) reference to this standard Le. EN 662; b) a complete identification of the product tested, including ty
28、pe, source and manufacturers reference numbers; c) the previous history of the sample; d) the mean of the four lowest values for curl; e) any deviations from this standard which may have affected the results. BS EN 662 : 1995 National annex NA (informative) Committees responsible The United Kingdom
29、participation in the preparation of this European Standard was entrusted to Technical Committee PRI/GO, Resilient floor coverings, upon which the following bodies were represented : British Adhesives and Sealants Association British Floor Covering Manufacturers Association British Railways Board Bri
30、tish Rubber Manufacturers Association Ltd. Consumer Policy Committee of BSI Contract Flooring Association Cork Industry Federation Department of the Environment (British Board of Agrment) Department of the Environment (Building Research Establishment) Federation of Plastering and Drywall Contractors
31、 Institute of Chartered Arbitrators Royal Institute of British Architects Wood Panel Products Federation Coopted members CEN EN*bb2 94 m 3404589 0087838 IT2 m BS EN 662 : 1995 BSI 389 Chiswick High Road London W4 4AL 9502 - 5 - 0.5k - FP BSI - British Standards Institution BSI is the independent nat
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