1、BRITISH STANDARD BS EN 663:1995 Resilient floor coverings Determination of conventional pattern depth The European Standard EN663:1994 has the status of a BritishStandardBS EN663:1995 This BritishStandard, having been prepared under the directionof the Building and CivilEngineering Sector Board(B/-)
2、, was published underthe authority of the Standards Board and comesintoeffect on 15February1995 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference PRI/60 Draft for comment 92/38637 DC ISBN 0 580 28247 6 Cooperating organizations The European Committee f
3、or Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standard Finland Suomen Standardisoimisli
4、ito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspe
5、ction du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisat
6、ion United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBS EN663:1995 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN663 3 National annex NA (informative) Committees responsible Ins
7、ide back coverBS EN663:1995 ii BSI 12-1999 National foreword This BritishStandard has been prepared by Technical Committee PRI/60, Resilient floor coverings, and is the English language version of EN663:1994 Resilient floor coverings Determination of conventional pattern depth published by the Europ
8、ean 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, pagesi andii, theEN title page, pages2 to4, 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 amendment tabl
10、e on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 663 November 1994 ICS 91.180 Descriptors: Floor coverings, decorative coverings, decorating, tests, determination, appearance, variation English version Resilient floor coverings Determination of conventional pattern de
11、pth Revtements de sol rsilients Dtermination de la profondeur conventionnelle du dcor Elastische Bodenbelge Bestimmung der Dekortiefe This European Standard was approved by CEN on1994-11-10. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
12、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 Central Secretariat or to any CEN member. This European Standard exists in three official v
13、ersions (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 national standards bodies of Austria, Belgiu
14、m, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassar
15、t 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN663:1994 EEN663:1994 BSI 12-1999 2 Foreword This European Standard was prepared by the Technical Committee CEN/TC134, Resilient and textile floor coverings, the secretariat of which is held by BSI. This European Standard shall b
16、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May1995, and conflicting national standards shall be withdrawn at the latest by May1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to i
17、mplement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Principle 3 3 General 3 4 Apparatus 3 5 Sampling and pr
18、eparation of test pieces 3 6 Conditioning 3 7 Procedure 4 8 Examination 4 9 Calculation and expression of results 4 10 Test report 4EN663:1994 BSI 12-1999 3 1 Scope This European Standard specifies three methods for determining conventional pattern depth by change in appearance of the characteristic
19、s of the pattern of resilient floor coverings which are grouped as follows: Group1. Patterns where the different bands (in colour and/or relief) are distributed in a uniform manner, where the ratio of pattern to background in small areas of0,01m 2to0,02m 2is not more than1:4; Group2. Patterns where
20、this ratio varies considerably where some areas of0,01m 2to0,02m 2may contain only one part of the pattern. 2 Principle 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 backgroun
21、d in the test area are measured before and after abrasion, using a transport grid (with squaresk 3mm) or a magnifying glass with 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
22、 a specific unit of area. 2.3 Method C. The worn area and the overall decorative pattern are simultaneously observed from eye level. 3 General Method 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.
23、 It may need to be supplemented by Method C. Method B is especially suitable for Group1 patterns where the pattern: background ratio is at least0,15 and does not vary by more than approximately1:2 on new material. Additional observations by means of Method C may also be required. Method C, which is
24、suitable for all pattern types, should be used (either on its own or as a supplement to A or B) when the 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
25、of the new material. 4 Apparatus 4.1 A machine tool e.g.grinder, milling machine, capable of machining an area of25000mm 2to within0,01mm. 4.2 A device for measuring reduction in thickness on the test piece itself, independently of the vertical pointer on the machine. 4.3 A series of geometric figur
26、es of approximately2500mm 2 , drawn on transparent film, e.g.a50mm square, a71mm right-angled triangle, a76mm equilateral triangle, a56mm diameter circle, a hexagon with a31mm edge, a rectangle62mm 40mm, a rhombus90mm 56mm, an ellipse70mm 46mm. 4.4 A grid marked out on transparent film or on a flat-
27、faced magnifying glass. Dimensions of squarek 3mm; mean thickness of linesk 0,15mm. 5 Sampling and preparation of test pieces Take a representative sample from the available material. Take two test pieces, sufficiently large to permit the area defined in4.1 to be machined. In the case of materials w
28、ith backing, first level the back of the test pieces by removing the backing (chemically or by stripping) and by rubbing down or machining the back of the upper solid layers in such a way as to give a thickness uniform to 0,02mm. Stick the test piece down with double-sided tape on to a metal base, s
29、traighten to within0,01mm and subject it to a pressure of10kPa (approximately25kg weight) for24h. 6 Conditioning Condition the test pieces at a temperature of(23 2) C and relative humidity(50 5)% rh for a minimum of24h. Maintain these conditions when carrying out the test.EN663:1994 4 BSI 12-1999 7
30、Procedure Measure the initial thickness of the test piece or the depth of cutting in at least eight places. Fit the test piece onto the bed of the machine tool and progressively and uniformly abrade the test area of the test piece to give a reduction in thickness of the order specified in the produc
31、t standard. Measure the reduction in thickness or the depth of cutting. If it is more than10% below the specified value, continue machining until the value is reached and remeasure the cutting depth. Apply a wax emulsion to the worn surface and then polish it. 8 Examination 8.1 Method A. Examine the
32、 same decorative pattern, both on the worn test piece and on new material, and count the following separately: a) the “x” squares, i.e.those where the total area is covered by the pattern (or relief); b) the “y” squares, i.e.those which are partially covered, whatever the size of the square may be;
33、c) the “z” squares, i.e.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 visible (not including the coloured areas forming part of the “background”) or which is
34、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 approximately1m 2 . Adjust the test piece to coincide with the same section of the decorative pattern of the unworn
35、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 9.1 Method A. Calculate the pattern: background ratio as a precentage from th
36、e following formula: Pattern background = where x, y and z are as described in8.1 If the difference in the pattern: background ratio, before and after testing isk 40% and, if, at the same time, the ratio after testing is at least half the ratio before testing, express the result as “not very noticea
37、ble”. 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 in4.3, express the result as “not very noticeable”. 9.3 Method C. Express the change as “not very noticeable”, or
38、“noticeable”, or “very noticeable, attracts immediate attention”. 10 Test report The test report shall contain the following information: a) a reference to this standard and the method used i.eEN663:Method A or B or C; b) a complete identification of the product tested, including type, source and ma
39、nufacturers 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. 1002xy + () y 2z + () -BS EN663:1995 BSI 12-1999 National annex NA (informative) Committ
40、ees responsible The United Kingdom participation in the preparation of this European Standard was entrusted to Technical Committee PRI/60, Resilient floor coverings, upon which the following bodies were represented: British Adhesives and Sealants Association British Floor Covering Manufacturers Asso
41、ciation 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 Environment (Building Research Establishment) Federation of
42、Plastering and Drywall Contractors Institute of Chartered Arbitrators Royal Institute of British Architects Wood Panel Products Federation Coopted membersBS EN 663:1995 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for prepar
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