BS-EN-438-8-2009.pdf

BS EN 438-8:2009 ICS 83.140.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD High-pressure decorative laminates (HPL) Sheets based on thermosetting resins (Usually called Laminates) Part 8: Classification and specifications for design laminates Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2009 © BSI 2009 ISBN 978 0 580 56686 8 Amendments/corrigenda issued since publication DateComments BS EN 438-8:2009 National foreword This British Standard is the UK implementation of EN 438-8:2009. The UK participation in its preparation was entrusted to Technical Committee PRI/76, Laminated sheet for decorative purposes. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI BS EN 438-8:2009 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 438-8 March 2009 ICS 83.140.20 English Version High-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (Usually called Laminates) - Part 8: Classification and specifications for design laminates Stratifiés décoratifs haute pression (HPL) - Plaques à base de résines thermodurcissables (communément appelées stratifiés) - Partie 8 : Classification et spécifications relatives aux stratifiés à effets de surface spéciaux Dekorative Hochdruck-Schichtpressstoffplatten (HPL) - Platten auf Basis härtbarer Harze (Schichtpressstoffe) - Teil 8: Klassifizierung und Spezifikationen für Design- Schichtpressstoffe This European Standard was approved by CEN on 22 February 2009. 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 lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre 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 responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels © 2009 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 438-8:2009: E Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI BS EN 438-8:2009 EN 438-8:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Material types and classification system 5 5 Requirements .6 5.1 Compliance .6 5.2 Inspection requirements .6 5.3 Dimensional tolerance requirements.7 5.4 Test requirements . 11 Bibliography . 17 Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI BS EN 438-8:2009 EN 438-8:2009 (E) 3 Foreword This document (EN 438-8:2009) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by NBN. 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 September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. EN 438 consists of the following parts, under the general title High-pressure decorative laminates (HPL) Sheets based on thermosetting resins (Usually called Laminates): Part 1: Introduction and general information Part 2: Determination of properties Part 3: Classification and specifications for laminates less than 2 mm thick intended for bonding to supporting substrates Part 4: Classification and specifications for Compact laminates of thickness 2 mm and greater Part 5: Classification and specifications for flooring grade laminates less than 2 mm thick intended for bonding to supporting substrates Part 6: Classification and specifications for Exterior-grade Compact laminates of thickness 2 mm and greater Part 7: Compact laminate and HPL composite panels for internal and external wall and ceiling finishes Part 8: Classification and specifications for design laminates (this standard) Part 9: Classification and specifications for alternative core laminates1 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 1 In preparation. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI BS EN 438-8:2009 EN 438-8:2009 (E) 4 1 Scope This part of EN 438 specifies performance requirements for high-pressure decorative laminates (HPL) intended for interior use with a design effect surface having a phenolic based core and a decorative surface, not covered by EN 438-3 to EN 438-6. Three surface material types (metal, wood veneer and pearlescent decor) are defined in this part of EN 438. EN 438-2 specifies the test methods relevant to this part of EN 438. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 438-2:2005, High-pressure decorative laminates (HPL) Sheets based on thermosetting resins (usually called Laminates) Part 2: Determination of properties EN 12721, Furniture Assessment of surface resistance to wet heat (ISO 4211-2:1993 modified) EN 12722, Furniture Assessment of surface resistance to dry heat (ISO 4211-3:1993 modified) EN ISO 178, Plastics Determination of flexural properties (ISO 178:2001) EN ISO 1183-1, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration method (ISO 1183-1:2004) ISO 11664-2, Colorimetry - Part 2: CIE standard illuminants 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 high pressure process process for producing laminate(s) by simultaneous application of heat (temperature 120 °C) and high specific pressure ( 5 MPa), to provide flowing and subsequent curing of the thermosetting resins 3.2 high-pressure decorative design laminate(s) (HPL) sheet(s) consisting of decorative surface layers supported by layers of cellulosic fibrous material (normally paper) impregnated with thermosetting resins and bonded together by a high pressure process NOTE 1 For surface layers, see 3.3. NOTE 2 The core layers are impregnated with phenolic based resins. The surface layers can appear on one or both side(s) of the laminate(s). They are not necessarily treated with thermosetting resin. In case of one-sided design laminates the back of the sheet(s) is made suitable for adhesive bonding to a substrate. 3.3 Types of high-pressure decorative design laminates according to the surface layer materials 3.3.1 pearlescent laminate high-pressure decorative design laminate, the surface material of which consists of a pearlescent effect decorative paper, which is impregnated with melamine resin Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI BS EN 438-8:2009 EN 438-8:2009 (E) 5 NOTE 1 To achieve the optimum aesthetic effect from the pearlescent pigment a protective melamine layer is not used. NOTE 2 As a result some surface properties are reduced (e.g. scratch, wear) therefore it is recommended that these products are used for vertical applications. 3.3.2 metal laminate high-pressure decorative design laminate, the surface material of which consists of a thin layer of metal NOTE 1 E.g. aluminium, steel or copper. NOTE 2 It is often protected by a thin layer of lacquer or in the case of aluminium the surface can be anodized. The surface performance and appearance of these metal laminates is equivalent to that of thin metal sheet. NOTE 3 As some surface properties are lower than that of melamine (e.g. scratch and wear), it is recommended that these products are used for vertical applications. 3.3.3 wood veneer laminate high-pressure decorative design laminate, the surface material of which consists of a wood veneer, which is covered by a protective melamine layer. The surface appearance of these wood veneer laminates is similar to wood. Wood veneer laminates are not normally available in postforming grade 4 Material types and classification system High-pressure decorative design laminates are defined using a three letter classification system as shown in Table 1. Table 1 High-pressure decorative design laminate classification system First letter Second letter Third letter A (Pearlescent laminate) M (Metal laminate) W (Wood veneer laminate) C (Compact) T (Thin laminate 5 mm La 0,30 0,30 Tb 0,60 0,60 Resistance to immersion in boiling water 12 Appearance Rating (min.) gloss finish other finishes 3 4 3 4 3 4 3 4 3 4 Mass increase % (max.) 2 mm 5 mm 2,0 3,0 Thickness increase % (max.) 2 mm 5 mm 6,0 2,0 9,0 6,0 Resistance to staining 26 Appearance Rating (min.) Groups 1 and 2 Group 3 5 4 5 4 5 4 5 4 5 4 Light fastness (xenon arc) 27 Contrast Grey scale rating (min.) 4c 4c 4c 4c 4c Resistance to water vapour 14 Appearance Rating (min.) 3 3 3 3 3 Resistance to cracking under stress (optional) 23 Appearance Rating (min.) 4 4 4 Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI BS EN 438-8:2009 EN 438-8:2009 (E) 13 Table 8 (Continued) Resistance to crazing 24 Appearance Rating (min.) 4 4 Flexural strength EN ISO 178d Stress MPa (min.) 80 Flexural modulus EN ISO 178 d Stress MPa (min.) 9 000 Density EN ISO 1183- 1 Density g/cm3 (min) 1,35 1,35 1,35 1,35 1,35 a L = in the longitudinal (or machine) direction of the fibrous sheet material (normally the direction of the longest dimension of the perlescent laminate). b T = in the cross-longitudinal (cross-machine) direction of the fibrous sheet material (at right angles to direction L). c Extraneous darkening and/or photocromism are due to the shock effect of accelerated exposure and are not characteristics of natural exposure. d Machined crosshead speed: 2 mm/min. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI BS EN 438-8:2009 EN 438-8:2009 (E) 14 5.4.2 General requirements for metal laminates General requirements specified in Table 9. Table 9 General requirements for metal laminates Property Test method (EN 438- 2:2005 clause no. unless otherwise stated) Property or attribute Unit (max. or min.) Metal laminate grade MTS MTP MTF MCS MCF Resistance to scratching 25 Force Rating (min.) 1 1 1 1 1 Dimensional stability at elevated temperature 17 Cumulative dimensional change % (max.) La 0,75 0,75 0,75 t 5 mm La 0,30 0,30 Tb 0,60 0,60 Resistance to immersion in boiling water 12 Appearance Core delamination Pass or fail Passc Passc Passc Passc Passc Resistance to staining 26 Appearance Rating (min.) Groups 1 and 2 Group 3 4 4 4 4 4 4 4 4 4 4 Light fastness (xenon arc) 27 Contrast Grey scale rating (min.) 4d 4d 4d 4d 4d Resistance to water vapour 14 Appearance Rating (min.) 3 3 3 3 3 Resistance to cracking under stress (optional) 23 Appearance Rating (min.) 4 4 4 Resistance to crazing 24 Appearance Rating (min.) 4 4 Flexural strength EN ISO 178e Stress MPa (min.) 80 Flexural modulus EN ISO 178e Stress MPa (min.) 9 000 Density EN ISO 1183-1 Density g/cm3 (min.) 1,35 1,35 1,35 1,35 1,35 a L = in the longitudinal (or machine) direction of the fibrous sheet material (normally the direction of the longest dimension of the metal laminate). b T = in the cross-longitudinal (cross-machine) direction of the fibrous sheet material (at right angles to direction L). c No delamination of the core. d Extraneous darkening and/or photocromism are due to the shock effect of accelerated exposure and are not characteristics of natural exposure. e Machined crosshead speed: 2 mm/min. Licensed CopyChinese University of Hong Kong, 13/06/2009 05:50, Uncontrolled Copy, (c) BSI BS EN 438-8:2009 EN 438-8:2009 (E) 15 5.4.3 General requirements for wood veneer laminates General requirements specified in Table 10. Table 10 General requirements for wood veneer laminates Property Test method (EN 438- 2:2005 clause no. unless otherwise stated) Property or attribute Unit (max or min) Wood veneer laminate grade WTS WTF WCS WCF Resistance to surface wear 10 Wear resistance revolutions (min.) initial point wear value 150 350 150 350 150 350 150 350 Resistance to impact by large diameter ball (optional) 21 Drop height Indent diameter mm (min.) mm (max.) 600 12 600 12 800 10 800 10 Resistance to scratching 25 Force Rating (min.) 2 2 2 2 Dimensional stability at elevated temperature 17 Cumulative dimensional change % (max.) La 0,75 0,90 t 5 mm La 0,45 0,45 Tb 0,75 0,75 Resistance to immersion in boiling water 12 Appearance Delamination pass or fail Passc Passc Passc Passc Resistance to dry heat (100 °C) EN 12722 Appearance Rating (min.) 3 3 3 3 Resistance to wet heat (100 °C) EN 12721 Appearance Rating (min.) 3 3 3 3 Resistance to staining 26 Appearance Rating (min.) Groups 1 and 2 Group 3 4 4 4 4 4 4 4 4 Light fastness (xenon arc) 27 Contrast Grey scale rating (min.) 2d 2d 2d 2d Resistance to cracking under stress (optional) 23 Appe