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1、BRITISH STANDARD BS EN 423:1993 Resilient floor coverings Determination of the effect of stains The European Standard EN 423:1993 has the status of a British Standard UDC 698.7:692.535.6:645.13:620.17:620.197 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:33:40 GMT+00:00 2006, Uncontrolle
2、d Copy, (c) BSI BS EN 423:1993 This British Standard, having been prepared under the direction of the Plastics and Rubber Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 November 1993 BSI 08-1999 The following BSI references relate to
3、the work on this standard: Committee reference PRM/60 Draft for comment 91/35291 DC ISBN 0 580 22083 4 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the follow
4、ing countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut beige de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardiza
5、tion IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qual
6、idade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat
7、 Nov 04 09:33:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 423:1993 BSI 08-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 1Scope3 2Principle3 3Apparatus and materials3 4Sampling and preparation of test pieces3 5Procedure3 6Expression of results4
8、7Test report4 National annex NA (informative) Committees responsibleInside back cover Table 1 Interpretation and presentation of results4 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:33:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 423:1993 ii BSI 08-1999 National foreword This Br
9、itish Standard has been prepared under the direction of the Plastics and Rubber Standards Policy Committee and is the English language version of EN 423:1993 Resilient floor coverings Determination of the effect of stains, published by the European Committee for Standardization (CEN). EN 423 was pro
10、duced as a result of European discussions in which the United Kingdom took an active part. 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
11、of itself confer immunity from legal obligations. 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 inc
12、orporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 04 09:33:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 423 August 1993 UDC 698.7:692.535.6:645.13:620.17:620.19
13、7 Descriptors: Floor coverings, textile floor coverings, physical tests, determination, deterioration, chemical compounds, appearance, stains English version Resilient floor coverings Determination of the effect of stains Revtements de sol souples Dtermination de laction des taches Elastische Bodenb
14、elge Verhalten gegenber Flecken This European Standard was approved by CEN on 1993-08-20. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date li
15、sts 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, German). A version in any other language made by translation under the resp
16、onsibility 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, Luxembourg, Netherlands, Norwa
17、y, 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 1993 Copyright reserved to CEN members Ref. No. EN 423:1993 E Licensed Copy: s
18、heffieldun sheffieldun, na, Sat Nov 04 09:33:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 423:1993 BSI 08-1999 2 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
19、shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 1994, and conflicting national standards shall be withdrawn at the latest by February 1994. The standard was approved and in accordance with the CEN/CENELEC Inter
20、nal Regulations, 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, United Kingdom. Licensed Copy: sheffieldun sheffieldun,
21、 na, Sat Nov 04 09:33:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 423:1993 BSI 08-19993 1 Scope This European Standard specifies a method for determining the reaction of a resilient floor covering to those chemical substances it is likely to experience in service. 2 Principle Various chemical s
22、ubstances in liquid or paste form are placed on a test piece for defined periods and removed. After cleaning has been carried out the resulting change of appearance is assessed under specified lighting conditions. 3 Apparatus and materials 3.1 Standard laboratory equipment: a) pipettes; b) watch gla
23、ss, diameter 40 mm; c) spatulas. 3.2 Chemical substances in liquid or paste form, to be agreed between the interested parties. 3.3 Standard cleaning and stain removal products 3.3.1 White cotton, in pad or cloth form. 3.3.2 Brushes, hard, unlikely to score the surface. 3.3.3 Warm water, used alone o
24、r with the following: a) synthetic detergent, e.g. sodium alkylsulfate; b) soap; c) alkaline products, e.g. washing soda or ammonia solution; d) hydrogen peroxide; e) sodium hypochlorite; f) sodium thiosulfate, 1 % solution; g) oxalic acid. 3.3.4 Denatured ethanol 3.3.5 White spirit1) 3.3.6 Turpenti
25、ne1) 3.4 Abrasives, abrasive scouring pads, steel wool No.00 or scouring powder, or abrasive papers, grain size P 240 or finer, used with water. 3.5 Special cleaning products, special products recommended by the floor covering manufacturer. 3.6 Illumination device. It comprises a lamp of correlated
26、colour temperature 5 500 K to 6 500 K, mounted to give an intensity of light at the viewing platform of (1 500 + 100) lx and in such a way as to illuminate the test piece vertically from above. The surroundings shall be neutral and darkened. The intensity of the light shall be checked frequently by
27、the use of a luxometer. The lifetime of the lamp, as given by the manufacturer, shall not be exceeded. 3.7 Rotary viewing table. It enables the test piece to be rotated so that it may be viewed from all directions under the standard illumination. 4 Sampling and preparation of test pieces Take a repr
28、esentative sample from the available material. Take one test piece in the colour(s) to be used with a surface area of at least 3 000 mm2 for each stain to be tested. If the test uses a substance likely to cause swelling or deformation of the test piece, e.g. prolonged contact with a solvent, bond th
29、e test piece to a fibre-cement sheet at least 5 days before testing. Subject the test piece to any treatment required, e.g. light abrasion to remove surface polish or application of a non-specified maintenance product. Identify the positions corresponding to each of the substances used, either by ma
30、rking numbers on the test piece (using a marking which is not affected by the material used in the test), or by a sketch, diagram or photograph. 5 Procedure 5.1 Application of liquid substances Pour a little liquid into the centre of the marked position. Apply the convex face of a watch glass to the
31、 liquid and remove it immediately. If the diameter of the stain does not exceed 15 mm, add a few more drops and spread again by applying the watch glass. Leave it in position this time, in such a way as to produce a stain of 300 mm2 to 400 mm2. 5.2 Application of paste substances With a spatula, spr
32、ead about 1 000 mm3 over an area of 300 mm2 to 400 mm2 (i.e. thickness 2,5 mm to 3 mm). 5.3 Duration of contact The main duration of contact shall be 2 h. If a stain appears on the test piece after 2 h, a new test shall be conducted for a period of 30 min. 5.4 Types of cleaning and observation 5.4.1
33、 Before cleaning, remove stains which are still liquid with cotton, working from the edge towards the centre of the stain. Scrape off the remains of paste with a spatula and wipe with cotton as above. 1) These should be rinsed with ethanol after use. Licensed Copy: sheffieldun sheffieldun, na, Sat N
34、ov 04 09:33:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 423:1993 4 BSI 08-1999 After cleaning has been carried out, examine the residual staining from a distance of approximately 800 mm at an approximate angle of 45 and from all directions by slowly rotating the viewing table. 5.4.2 If a stain
35、is visible, rub it down with a mild abrasive material or a cleaning product recommended by the manufacturer, and examine as described in 5.4.1. 6 Expression of results Express the results and present them in the report in accordance with Table 1. Table 1 Interpretation and presentation of results 7
36、Test report The test report shall contain the following information: a) a reference to this standard, i.e. EN 423; b) a complete identification of the product tested, including type, source, colour and manufacturers reference numbers; c) previous history of the sample; d) the staining materials, typ
37、e of cleaning and contact periods used; e) the test results in accordance with Table 1; f) any deviation from this standard which may have affected the results. IndexEffect of test after cleaning/abrasion 0Not affected 1Very slightly affected 2Slightly affected 3Affected 4Severly affected Licensed C
38、opy: sheffieldun sheffieldun, na, Sat Nov 04 09:33:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 423:1993 BSI 08-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Plastics and Rubber St
39、andards Policy Committee (PRM/-) to Technical Committee PRM/60, upon which the following bodies were represented: British Adhesives and Sealants Association British Board of Agrment British Floor Covering Mnufacturers Association British Railways Board British Rubber Manufacturers Association Ltd. C
40、onsumer Policy Committee of BSI Contract Flooring Association Cork Industry Federation Department of the Environment (Building Research Establishment) Federation of Plastering and Drywall Contractors Health Care Supplies South West Royal Institute of British Architects Licensed Copy: sheffieldun she
41、ffieldun, na, Sat Nov 04 09:33:40 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 423:1993 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
42、at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and
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47、th standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in th
48、e UK, of the publications of the internationalstandardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without p
49、rior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: sheffieldun sheffieldun, na
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