1、Resilient floor coverings - Determination of conventional pattern depth The European Standard EN 663 : 1994 has the status of a British Standard BS EN 663 : 1995 CEN EN*bb3 94 m 3404589 0083370 340 W BS EN 663 : 1996 Civil Engineering Sector Board (BA), was published under the authority of the Stand
2、ards Board and comes into effect on 15 February 1995 Amd. No. Cooperating organizations Date Qxt affected The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria
3、Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland United Kingdom Oesterreichisches Normungsinstitut Institut belge de normalisation Dansk Standard Suomen Standardisoimisliito, r. y. Association francaise de normalisati
4、on Deutsches Institut fr Normung e.V. Hellenic Organization for Standardization 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 Insti
5、tuto Poitugus da Qualidade Asociacin Espaola de Normalizacin y Certificacin Standardiseringskommissionen i Sverige Association suisse de normalisation British Standards Institution O ES1 1995 The following BSI references relate to the work on this standard: Committee reference PRU60 Draft for commen
6、t 92/38637 DC ISBN O 680 28247 6 BS EN 663 : 1995 Contents Page Cooperating organizations Inside front cover National foreword i Foreword 2 Text of EN 663 3 National annex NA (informative) Committees responsible Inside back cover National foreword This British Standard has been prepared by Tchnical
7、Committee PRI160, Resilient floor coverings, and is the English language veision of EN 663 : 1994 Resilient floor ccuver?ws - Detmminution of conventional puttem ck-pth published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunit
8、y from legal obligations. i CEN ENxbb3 74 340Y589 O083372 313 = EUROPEAN STANDARD EN 663 NORME EUROPENNE EUROPISCHE NORM November 1994 ICs 91.180 Descriptors: Floor coverings, decorative coverings, decorating, tests, determination, appearance, variation English version Resilient floor coverings - De
9、termination of conventional pattern depth Revtements de sol rsilients - Dtermination de la profondeur conventionnelle du dcor Elastische Bodenbelge - Bestimmung der Dekortiefe This European Standard was approved by CEN on 1994-11-10. CEN members are bound to comply with the CENICENELEC internal Regu
10、lations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibiiographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This E
11、uropean 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 Central Secretariat has the same status as the official versions. CEN members are the n
12、ational standards bodies of Austria, Belgium, Denmark, Finland, France, 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
13、 Normung Central Secretariat: rue de Stassart 36, B-106 Brussels O 1994 Copyright reserved to CEN members Ref. No. EN 663 : 1994 E Page 2 EN 663: 1994 Foreword This European Standard was prepared by the lchnical Committee CENITC 134, Resilient and textile floor coverings, the secretariat of which is
14、 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 May 1995, and conflicting national standards shall be withdrawn at the latest by May 1995. According to the CENICENELEC Internal Regul
15、ations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. . I- - - - CEN ENLbb3 94-W 3404589 0083374 T9
16、b W Page 3 EN 663: 1994 1 Scope This European Stanclarcl spcifies three methods for determining conventional pattern depth by change in appearance of the characteristics of the pattern of resilient floor coverings which are grouped as follovs: Group 1. Patterns where the different bands (in colour a
17、ndor relief) are distributed in a uniforni manner, where the ratio of pattern to background in small areas of 0,Ol ins to 0,02 nY2 is not more than 1 : 4; Group 2. Patterns where this ratio varies consicierably where some areas of O,O1 m2 to O,2 ni2 may contain only one part of the pattern. 2 Princi
18、ple The change in appearance resulting from abrasion of a known depth is assessed by at least one of the following observation methods: 2.1 Method A. The areas of pattern and background in the test area are measured before ancl after abrasion, using a transport grid (with squares 5 3 min) or a magni
19、fying glass wth a flat face marked with such a grid. 2.2 Method B. The areas where the pattern has disappeared completely after testing are detected by means of contour reference lines of a specific unit of area. 2.3 Method C. The worn area ancl the overall decorative pattern are simultaneously obse
20、rved from eye level. 3 General Methocl A, which is suitable for a large number of pattern types, should be used on a heavy pattern area i.e. a high value for the pattern : background ratio. It may need to be supplemented by Method C. Method B is especially suitable for Group 1 patterns where the pat
21、tern : background ratio is at least 0,15 and does not vary by more than approximately 1 : 2 on new material. Additional observations by means of Method C may also be recpired. Method C, which is suitable for all pattern types, should be used (either on its own or as a supplement to A or 3) when the
22、decorative pattern includes one or more elements with relatively small surface areas but which are highly visible and for which selective fading would produce an imbalance in the visual effect of the new material. 4 Apparatus 4.1 A iirackiie tod e.g. grinder, milling machine, capable of machining an
23、 area of 25 000 nun2 to within 0,Ol inm. on the test piece itsself, independently of the vertical pointer on the machine. 4.3 A series qf yeoirzcWic figurcJs of approximately 2500 mm2, drawn on transparent film, e.g. a 50 inin square, a il inin right-angled triangle, a 76 min equilateral triangle, a
24、 56 inm diameter circle, a hexagon with a 31 min edge, a rectangle U2 min x 40 min, a rhombus 80 mm x 66 min, an ellipse 70 min x 46 min. 4.4 A grid marked out on transparent film or on a flat-faced magnifying glass. Dimensions of square I 3 min; mean thickness of lines 5 0,15 mm. 4.2 A b) the y squ
25、ares, Le. those which are partially covered, whatever the size of the square may be; c) the z squares, Le. those on which only the background (or the smooth part of the surface) is visible. 8.2 Method B. Place the transparent film on the test piece and look for an area where only one colour is visib
26、le (not including the coloured areas forming part of the background) or which is completely smooth, into which at least one of the shapes on the film can be fitted. 8.3 Method C. Place the test piece on the floor near a door, next to an unworn test piece measuring approximately 1 m2. Adjust the test
27、 piece to coincide with the same section of the decorative pattern of the unworn test piece. Assess whether, when the room is entered, the difference in appearance seems to be not very noticeable, noticeable or very noticeable, attracts immediate attention. 9 Calculation and expression of results 9.
28、1 Method A. Calculate the pattein : background ratio as a precentage from the following formula: where .z, y and x are as described in 8.1 If the difference in the pattern : background ratio, before and after testing is I 40 % and, if, at the same time, the ratio after testing is at least half the r
29、atio before testing, express the result as not very noticeable. 9.2 Method B. If the test does not produce an area which is one colour all over (or smooth in the case of embossed patterns, totally covering one of the reference shapes described in 4.3, express the result as not veiy noticeable. 9.3 M
30、ethod C. Express the change as not veiy noticeable, or noticeable, or very noticeable, attracts immediate attention. 10 lkst report The test report shall contain the following information: a) a reference to this standard and the method used i.e EN 663 : Method A or B or C; b) a complete identificati
31、on of the product tested, including type, source and manufacturers reference numbers; c) the previous history of the sample; d) the depth of abrasion; e) the assessment of change in appearance; f) any deviation from this standard which may have affected the results. CEN ENabb3 4i 3404587 0083376 869
32、 BS EN 663 : 1995 National annex NA (informative) Committees responsible The United Kingdom 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 Seala
33、nts Association British Floor Covering Manufacturers? Association British Railways Board British 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 E
34、nvironment (Building Research Establishment) Federation of Plastering and Drywall Contractors Institute of Chartered Arbitrators Royal Institute of British Architects Wood Panel Products Federation Coopted members BS EN 663 : 1995 BSI 389 Chiswick High Road London W4 4AL 9502- 3- 0.5k- JWD CEN EN*bb
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