1、BRITISH STANDARD BS EN 259-2:2001 Wallcoverings in roll form Heavy duty wallcoverings Part 2: Determination of impact resistance The European Standard EN 259-2:2001 has the status of a British Standard ICS 91.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 259-2:2001
2、This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 June 2001 BSI 06-2001 ISBN 0 580 37097 6 National foreword This British Standard is the off
3、icial English language version of EN 259-2:2001. Together with BS EN 259-1:2001, it supersedes BS EN 259:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CW/35, Wallcoverings, which has the responsibility to: A list of organizations represented on
4、 this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index
5、”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. 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 con
6、fer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in th
7、e UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Dat
8、e CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 259-2 April 2001 ICS 91.180 Supersedes EN 259:1991 English version Wallcoverings in roll form Heavy duty wallcoverings Part 2: Determination of impact resistance Revtements muraux en rouleaux Revtements muraux usage intense Partie 2: Dte
9、rmination de la rsistance limpact Wandbekleidungen in Rollen Hoch beanspruchbare Wandbekleidungen Teil 2: Bestimmung der Stofestigkeit This European Standard was approved by CEN on 20 January 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditio
10、ns for 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 Management Centre or to any CEN member. This European Standard exists in three offic
11、ial 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Bel
12、gium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre:
13、rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 259-2:2001 EPage 2 EN 259-2:2001 BSI 06-2001 Contents Page Foreword 3 Introduction . 4 1 Scope 4 2 Normative references 4 3 Terms and definiti
14、ons 4 4 Principle 4 5 Materials 5 6 Apparatus . 5 7 Preparation and conditioning of test pieces. 7 8 Procedure . 7 9 Evaluation and expression of results 8 10 Test report 8Page 3 EN 259-2:2001 BSI 06-2001 Foreword This European Standard has been prepared by Technical Committee 99, Wallcoverings in r
15、oll form, the Secretariat of which is 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 October 2001, and conflicting national standards shall be withdrawn at the latest by October 2001
16、. This European Standard supersedes EN 259:1991 and Amendment EN 259:1991/A1:1996. It comprises two parts. Part 1 covers the specifications for heavy duty wallcoverings. Part 2 specifies the method of test for the determination of impact resistance which is particular to heavy duty wallcoverings. Ac
17、cording to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portu
18、gal, Spain, Sweden, Switzerland and the United Kingdom.Page 4 EN 259-2:2001 BSI 06-2001 Introduction A heavy duty wallcovering is a wallcovering intended for use in areas of heavy traffic or in commercial premises. There are many types of wallcovering and many processes used in their manufacture. To
19、 ensure satisfactory performance, it is important that decorators follow the manufacturers recommended hanging instructions for each particular product. 1 Scope This European Standard describes a method for the determination of the impact resistance of heavy duty wallcoverings. 2 Normative reference
20、s This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references subsequent amendments to, or revisions of any of these p
21、ublication apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 12956 Wallcoverings in roll form Determination of dimensions, straightness, spongeability and
22、washability. prEN 235:1998 Wallcoverings in roll form Vocabulary and symbols. 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in prEN 235:1998 apply. 4 Principle A test piece cut from a heavy duty wallcovering bonded to 12,5 mm thick plasterboard i
23、s subjected to impacts by a striker corresponding to an energy of 1 Joule. After the impacts, the condition of the test piece surface is assessed.Page 5 EN 259-2:2001 BSI 06-2001 5 Materials Plasterboard, extra-hard grade, of thickness (12,5 0,4) mm and weight/unit area (10,25 1,75) kg/m 2 . Before
24、preparing the test pieces as described below, check that the plasterboard used is suitable for the purpose by subjecting a representative sample of the board, without any wallcovering attached, to the impact test under the conditions described in the standard. The board is considered as suitable for
25、 the wallcovering testing if at least four of the five impacts do not cause marks of considerable depth. 6 Apparatus The apparatus is of the “falling weight” type and a typical example is shown in Figure 1. It consists of the following elements: - a heavy rigid base fitted with levelling screws enab
26、ling the guide tube to be positioned vertically, i.e. at (90 0,1) to the horizontal in all directions; - a specimen support consisting of a sheet of carbon steel 5 mm thick, not less than 75 mm wide and not less than 145 mm high, rigidly fixed to the base at an angle of (30 1) to the horizontal. Thi
27、s specimen support shall be fitted with clamps to permit rigid fixing of the test piece; - a rigid superstructure carrying the release mechanism and the tubular guide (440 2) mm long and (39 0,5) mm in diameter for the striker; - a weighted striker of mass (300 3) g, diameter (36 0,5) mm and length
28、(100 2) mm with a hardened steel striking surface (20 0,1) mm in diameter and edges rounded to a radius of (2 0,08) mm; - a plumb line or other system for verifying the verticality of the tubular guide.Page 6 EN 259-2:2001 BSI 06-2001 Dimensions in millimetres 300g 89 100 100 340 145 20 36 38 i.d R
29、2 90 30 90 5 3 6 78 1 2 5 4 75 a) b) c) Tolerances are given in clause 6. Key 1 Striker 2 Tubular guide 3 Striking surface 4 Steel specimen holder 5 Test piece Figure 1 Typical impact test apparatusPage 7 EN 259-2:2001 BSI 06-2001 7 Preparation and conditioning of test pieces Samples of the wallcove
30、ring to be tested shall be bonded to the decorating face of the plasterboard described in clause 5 using an adhesive recommended by the manufacturer and in accordance with the manufacturers instructions. The arrangement of the coating on the plasterboard shall be as shown in Figure 2. Key 1 Machine
31、direction of sample Figure 2 Sample preparation After bonding, place the samples horizontally to dry for a minimum of 72 h under ambient conditions. After drying, condition the bonded samples at (23 2) C and (50 5) % relative humidity for 24 h. 8 Procedure Care should be taken when carrying out this
32、 test as small differences in the substrate or techniques can affect the reproducibility of the test. Carry out the tests at (23 2) C and (50 5) % relative humidity. Clamp a test piece prepared and conditioned as described in clause 7 to the specimen support so that it is rigidly fixed and adjust th
33、e tubular guide so that its bottom edge is in contact with the surface of the test piece. Place a clean striker in the top of the guide so that the underneath of the striking surface is (340 2) mm from the bottom of the guide (see Figure 1) and release it. Remove the test piece from the apparatus to
34、 examine it in a viewing cabinet as described and shown in EN 12956. Move the test piece at least 50 mm on the steel support and reclamp it for the next impact. Carry out five separate impacts in this way with at least 50 mm between each impact.Page 8 EN 259-2:2001 BSI 06-2001 9 Evaluation and expre
35、ssion of results Examine the test piece with the naked eye in the viewing cabinet (1 0,1) h after each impact. Check whether the covering surface is intact or has suffered irreversible damage; this is generally indicated by bursting or cracking of the surface layer which can extend down to the subst
36、rate of the wallcovering. Any damage accompanied by deterioration of the plasterboard as a result of a defect in it (void or other) shall not be taken into account and a further impact shall be carried out so that the assessment is made on five valid impacts. NOTE Any purely mechanical crushing of t
37、he grain is generally reversible over time. In cases of doubt, the test piece should be re-examined after 24 h. If traces of the impact have disappeared or have largely worn off, this is confirmation of the reversible character of the change. Any impact not resulting in irreversible damage is counte
38、d as good. The result shall be expressed as “impact resistant” if at least four of the five impacts are good. Otherwise, the result shall be expressed as “not impact resistant”. 10 Test report When the wallcovering is subjected to the impact test only, a specific test report shall be prepared. It sh
39、all contain at least the following information: a) identification (source and reference) of the wallcovering tested; b) the date of testing; c) the result obtained, i.e. either: “impact resistant in accordance with EN 259-2”; or “not impact resistant in accordance with EN 259-2”; d) any deviation, i
40、ntentional or not, from this procedure.blankBS EN 259-2:2001 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 at the international level. It
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