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1、BRITISH STANDARD BS EN 663:1995 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 This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Boa
2、rd (B/-), was published under the authority of the Standards Board and comes into effect on 15 February 1995 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 Europea
3、n 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 Standard
4、isoimisliito, 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 LuxembourgIns
5、pection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation
6、United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments BS EN 663:1995 BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 6633 National annex NA (informative) Committees responsibleInside back c
7、over BS EN 663:1995 ii BSI 12-1999 National foreword This British Standard has been prepared by Technical Committee PRI/60, Resilient floor coverings, and is the English language version of EN 663:1994 Resilient floor coverings Determination of conventional pattern depth published by the European Co
8、mmittee 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. Summar
9、y 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 amendment table
10、 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 on 1994-11-10. 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
13、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 national standards bodies of Austria, Belgi
14、um, 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 Normung Central Secretariat: rue de Stass
15、art 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 663:1994 E EN 663:1994 BSI 12-1999 2 Foreword This European Standard was prepared by the Technical Committee CEN/TC 134, Resilient and textile floor coverings, the secretariat of which is held by BSI. This European Standard s
16、hall 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 CEN/CENELEC Internal Regulations, the following countries are bo
17、und 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. Contents Page Foreword2 1Scope3 2Principle3 3General3 4Apparatus3 5Sampling and pre
18、paration of test pieces3 6Conditioning3 7Procedure4 8Examination4 9Calculation and expression of results4 10Test report4 EN 663:1994 BSI 12-19993 1 Scope This European Standard specifies three methods for determining conventional pattern depth by change in appearance of the characteristics of the pa
19、ttern of resilient floor coverings which are grouped as follows: Group 1. 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 of 0,01 m2 to 0,02 m2 is not more than 1 : 4; Group 2. Patterns where th
20、is ratio varies considerably where some areas of 0,01 m2 to 0,02 m2 may 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 backgro
21、und in the test area are measured before and after abrasion, using a transport grid (with squares k 3 mm) 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 line
22、s of 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 r
23、atio. It may need to be supplemented by Method C. Method B is especially suitable for Group 1 patterns where the pattern: 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 required. Method C,
24、 which is 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 visu
25、al effect of the new material. 4 Apparatus 4.1 A machine tool e.g. grinder, milling machine, capable of machining an area of 25 000 mm2 to within 0,01 mm. 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
26、 geometric figures of approximately 2 500 mm2, drawn on transparent film, e.g. a 50 mm square, a 71 mm right-angled triangle, a 76 mm equilateral triangle, a 56 mm diameter circle, a hexagon with a 31 mm edge, a rectangle 62 mm 40 mm, a rhombus 90 mm 56 mm, an ellipse 70 mm 46 mm. 4.4 A grid marked
27、out on transparent film or on a flat-faced magnifying glass. Dimensions of square k 3 mm; mean thickness of lines k 0,15 mm. 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 in 4.1
28、to be machined. In the case of materials with 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 0,02 mm. Stick the test piece down w
29、ith double-sided tape on to a metal base, straighten to within 0,01 mm and subject it to a pressure of 10 kPa (approximately 25 kg weight) for 24 h. 6 Conditioning Condition the test pieces at a temperature of (23 2) C and relative humidity (50 5) % rh for a minimum of 24 h. Maintain these condition
30、s when carrying out the test. EN 663:1994 4 BSI 12-1999 7 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 r
31、eduction in thickness of the order specified in the product standard. Measure the reduction in thickness or the depth of cutting. If it is more than 10 % below the specified value, continue machining until the value is reached and remeasure the cutting depth. Apply a wax emulsion to the worn surface
32、 and then polish it. 8 Examination 8.1 Method A. Examine the 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 a
33、re partially covered, whatever the size of the square may be; 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 th
34、e 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 piece to coincide
35、 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 9.1 Method A.
36、Calculate the pattern: background ratio as a precentage from the following formula: Pattern background = where x, y and z are as described in 8.1 If the difference in the pattern: background ratio, before and after testing is k 40 % and, if, at the same time, the ratio after testing is at least half
37、 the ratio 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 very noticeab
38、le”. 9.3 Method C. Express the change as “not very noticeable”, or “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.e EN 663:Method A or B or C; b) a complet
39、e identification 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. 100 2xy+() y2z+() -
40、 - BS EN 663:1995 BSI 12-1999 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 floor coverings, upon which the following bodies were represented: British Adhesiv
41、es 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 Industry Federation Department of the Environment (British Board of Agrment) Departmen
42、t 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 members BS EN 663:1995 BSI 389 Chiswick High Road London W4 4AL BSI British Standard
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