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1、a Date: 15 October 2007 Origin: European Latest date for receipt of comments: 31 January 2008 Project no.: 2006/00732 Responsible committee: PRI/76 Laminated sheet for decorative purposes Interested committees: Title: BS EN 438-8: High-pressure decorative laminates (HPL) Sheets based on thermosettin
2、g resins (Usually called Laminates) Part 8: Classification and specifications for design laminates Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard whic
3、h may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 31 January 2008. This draft is issued to allow comments from interested parties; all comments will be given consid
4、eration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominatin
5、g organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email ordersbsi-. British, International and fore
6、ign standards are also available from BSI Customer Services. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publica
7、tions referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsi-. Direct tel: 020 8996 7009 Responsible Committee Secretary: Committee Service Centre (BSI) E-mail: cscbsi- Draft for Public Comment Head Office 389 Chiswick High Road London W4 4A
8、L Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30172710 DC Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:52:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on European discussion
9、s in which the UK has taken an active part. Your comments on this draft are welcome and will assist in the preparation of the consequent British Standard. If no comments are received to the contrary, then the UK will approve this draft and implement it as a British Standard. Comment is particularly
10、welcome on national, legislative or similar deviations that may be necessary. Even if this draft standard is not approved by the UK, if it receives the necessary support in Europe, the UK will be obliged to publish the official English Language text unchanged as a British Standard and to withdraw an
11、y conflicting standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee
12、. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possib
13、le; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank elect
14、ronic version of a comment form are available from the BSI web site at: http:/www.bsi- Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of c
15、om- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the
16、UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, Lon
17、don South Bank University, Fri Nov 16 07:52:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM DRAFT prEN 438-8 October 2007 ICS 83.140.20 English Version High-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (Usually called Lami
18、nates) - Part 8: Classification and specifications for design laminates Dekorative Hochdruck-Schichtpressstoffplatten (HPL) - Platten auf Basis hrtbarer Harze (Schichtpressstoffe) - Teil 8: Klassifizierung und Spezifikationen fr Design- Schichtpressstoffe This draft European Standard is submitted to
19、 CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 249. If this draft becomes a European Standard, 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 standar
20、d without any alteration. This draft European Standard was established by CEN 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 sam
21、e 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, R
22、omania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation. Warning : This document is not a European Standa
23、rd. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007
24、CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. prEN 438-8:2007: E Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:52:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI prEN 438-8:2007 (E) 2 Contents
25、 Page Foreword3 1 Scope 4 2 Normative references4 3 Terms and definitions .4 4 Material types and classification system5 4.1 Nomenclature.5 5 Requirements.6 5.1 Compliance.6 5.2 Inspection requirements.6 5.2.1 General6 5.2.2 Colour, pattern and surface finish.6 5.2.3 Reverse side.6 5.2.4 Visual insp
26、ection .7 5.3 Dimensional tolerance requirements.7 5.4 Test requirements11 5.4.1 General requirements for pearlescent laminates.11 5.4.2 General requirements for metal laminates12 5.4.3 General requirements for wood veneer laminates.13 5.4.4 Additional requirements for type P design laminates. 14 5.
27、4.5 Notes on requirements for reaction to fire14 Bibliography16 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:52:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI prEN 438-8:2007 (E) 3 Foreword This document (prEN 438-8:2007) has been prepared by Technical Comm
28、ittee CEN/TC 249 “Plastics”, the secretariat of which is held by NBN. This document is currently submitted to the CEN Enquiry. This European Standard consists of nine parts: Part 1: Introduction and general information; Part 2: Determination of properties; Part 3: Classification and specifications f
29、or 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 supporti
30、ng 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 7: Compact laminate and HPL composite panels for internal and exter
31、nal wall and ceiling finishes; Part 8: Classification and specifications for design laminates; Part 9: Classification and specifications for alternative core laminates. Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:52:16 GMT+00:00 2007, Uncontrolled Copy, (
32、c) BSI prEN 438-8:2007 (E) 4 1 Scope This part of EN 438 specifies performance requirements for high-pressure decorative laminates for interior use with a design effect surface having a phenolic based core and a decorative surface not covered by parts 3 to 6 of EN 438. Three surface material types:
33、metal, wood veneer and pearlescent decor are defined in this part of EN 438. EN 438-2 specifies the methods of test 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 editio
34、n 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 12722:1997, Furnit
35、ure Assessment of surface resistance to dry heat EN 12721:1997, Furniture Assessment of surface resistance to wet heat (ISO 4211-2:1993 modified) EN ISO 178, Plastics Determination of flexural properties (ISO 178:2001) EN ISO 1183-1:2004, Plastics Methods for determining the density of non-cellular
36、plastics Part 1: Immersion method, liquid pyknometer method and titration method (ISO 1183-1:2004) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 high-pressure decorative design laminate(s) (HPL) with surfaces not covered by parts 3 to 6 of
37、EN 438 sheet(s) consisting of decorative surface layers as described in 3.2 supported by layers of cellulosic fibrous material (normally paper) impregnated with thermosetting resins and bonded together by the high pressure process described below The core layers are impregnated with phenolic based r
38、esins. 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. The high pressure process is defined as the
39、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 Surface material types 3.2.1 pearlescent surface material consisting of a pearlescent effect decorative paper, which is impregnated with
40、 melamine resin Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:52:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI prEN 438-8:2007 (E) 5 To achieve the optimum aesthetic effect from the pearlescent pigment a protective melamine layer is not used. NOTE As a resu
41、lt some surface properties are reduced (e.g. scratch, wear) therefore it is recommended that these products are used for vertical applications. 3.2.2 metal surface material consisting of a thin layer of metal for example aluminium, steel or copper It is often protected by a thin layer of lacquer or
42、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 Some surface properties are lower than that of melamine (e.g. scratch and wear) therefore it is recommended that these products are us
43、ed for vertical applications. 3.2.3 wood veneer surface material consisting 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 ty
44、pes and classification system Design laminates are defined using a three letter classification system as shown in Table 1. Table 1 Design laminate classification system First letter Second letter Third letter A (Pearlescent) M (Metal) W (Wood veneer) C (Compact) T (Thin laminate less 5 mm La Tb 0,75
45、 1,25 - 0,75 1,25 - 0,75 1,25 - - 0,40 0,80 0,30 0,60 - 0,40 0,80 0,30 0,60 Appearance Rating (min) gloss finish other finishes 3 4 3 4 3 4 3 4 3 4 Resistance to immersion in boiling water 12 Mass increase Thickness increase % (max) 2 mm 5 mm % (max) 2 mm 5 mm - - - 5,0 2,0 6,0 2,0 7,0 3,0 9,0 6,0 R
46、esistance to staining 26 Appearance Rating (min) groups 1 & 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
47、(min) 4 4 4 - - Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:52:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI prEN 438-8:2007 (E) 12 Resistance to crazing 24 Appearance Rating (min) - - - 4 4 Flexural strength EN ISO 178d Stress MPa (min) - - - 80 Flexural
48、 modulus EN ISO 178d Stress MPa (min) - - - 9000 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 laminate). b T = in the cross-longitudinal (cross
49、-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. 5.4.2 General requirements for metal laminates General requirements specified in Table 9. Tab