1、BRITISH STANDARD BS EN 438-4:2005 High-pressure decorative laminates (HPL) Sheets based on thermosetting resins (Usually called Laminates) Part 4: Classification and specifications for Compact laminates of thickness 2 mm and greater The European Standard EN 438-4:2005 has the status of a British Sta
2、ndard ICS 83.140.20 BS EN 438-4:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 26 July 2005 BSI 26 July 2005 ISBN 0 580 45455 X National foreword This British Standard is the official English language version of EN 438-4:2005. BS EN 438
3、-4:2005 together with BS EN 438 Parts 1 to 3 and 5 to 7 supersedes BS EN 438-1:1991 and BS EN 438-2:1991 which are withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/76, Laminated sheet for decorative purposes, which has the responsibility to: A list of organ
4、izations represented on 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 Catalogue under the section entitled “International Standards Corresp
5、ondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. 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 does not of
6、 itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments
7、and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued si
8、nce publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 438-4 January 2005 ICS 83.140.20 Supersedes EN 438-1:1991, EN 438-2:1991 English version High-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (Usually called Laminates) - Part 4: Cl
9、assification and specifications for Compact laminates of thickness 2 mm and greaterStratifis dcoratifs haute pression (HPL) - Plaques base de rsines thermodurcissables (communment appeles stratifis) - Partie 4 : Classification et spcifications des stratifis compacts dpaisseur gale ou suprieure 2 mm
10、Dekorative Hochdruck-Schichtpressstoffplatten (HPL) - Platten auf Basis hrtbarer Harze (Schichtpressstoffe) - Teil 4: Klassifizierung und Spezifikationen fr Kompakt- Schichtpressstoffe mit einer Dicke von 2 mm und grer This European Standard was approved by CEN on 16 August 2004. CEN members are bou
11、nd 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 C
12、entral 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 responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status
13、as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia,
14、Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN natio
15、nal Members. Ref. No. EN 438-4:2005: EEN 438-4:2005 (E) 2 Contents page Foreword3 1 Scope.4 2 Normative references.4 3 Term and definition 4 4 Material types and classification system5 5 Characteristics and applications.5 6 Requirements6 Annex A (informative) Addendum to Table 3 relating to Test Met
16、hod 25: Scratch Resistance 10 Annex B (informative) Addendum to Clause 6.4.2, relating to fire performance 11 Table B.1 Typical EN 13501-1 classifications of Compact laminates 11 Bibliography 12 EN 438-4:2005 (E) 3 Foreword This document (EN 438-4:2005) has been prepared by Technical Committee CEN/T
17、C 249 “Plastics”, the secretariat of which is held by IBN. 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 July 2005, and conflicting national standards shall be withdrawn at the latest by July 20
18、05. This document supersedes EN 438-1:1991 and EN 438-2:1991. This Standard consists of the following parts: 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 supportin
19、g 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-
20、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 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this E
21、uropean Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 438-4:2
22、005 (E) 4 1 Scope This Part of EN 438 specifies performance requirements for two types of Compact laminate (defined in Clause 4) of thickness 2 mm or greater intended for interior use. High-pressure decorative Compact laminates are characterised by their aesthetic qualities, strength, durability and
23、 functional performance. Compact HPL sheets are available in a wide variety of colours, patterns and surface finishes; they are extremely strong, and resistant to wear, impact, scratching, moisture, heat and staining; and possess good hygienic and anti-static properties, being easy to clean and main
24、tain. 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 edition cited applies. For undated references, the latest edition of the refe
25、renced document (including any amendments) applies. EN 438-2, High-pressure decorative laminates (HPL) Sheets based on thermosetting resins (Usually called Laminates) Part 2: Determination of properties EN 12721:1997, Furniture Assessment of surface resistance to wet heat (ISO 4211-2:1993 modified)
26、EN ISO 178:2003, Plastics Determination of flexural properties (ISO 178:2001) EN ISO 527-2:1996, Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:1993 including Corr 1:1994) EN ISO 1183-1:2004, Plastics Methods for determining the de
27、nsity of non-cellular plastics - Part 1: Immersion method, liquid pyknometer method and titration method (ISO 1183-1:2004) 3 Term and definition For the purposes of this document, the following term and definition applies. 3.1 high-pressure decorative compact laminate(s) (HPL) sheet(s) consisting of
28、 layers of cellulosic fibrous material (normally paper) impregnated with thermosetting resins and bonded together by the high pressure process described below. The surface layer(s) on one or both sides, having decorative colours or designs, are impregnated with melamine based resins. The core layers
29、 are impregnated with phenolic based resins The high pressure process is defined as the simultaneous application of heat (temperature 120 C) and high specific pressure ( 5 Mpa), to provide flowing and subsequent curing of the thermosetting resins to obtain a homogeneous non-porous material with incr
30、eased density ( 1,35 g/cm), and with the required surface finish. EN 438-4:2005 (E) 5 4 Material types and classification system 4.1 General Compact laminates are defined using a three letter classification system as shown in Table 1. Table 1 Compact laminate classification system FIRST LETTER SECON
31、D LETTER THIRD LETTER C (COMPACT GRADE) G (GENERAL PURPOSE) S (STANDARD GRADE) or F (FLAME-RETARDANT GRADE) 4.2 Type CGS Standard grade decorative Compact laminates. Specified as HPL/EN438-4/CGS. 4.3 Type CGF Decorative Compact laminates with improved fire retardance similar to type CGS but also mee
32、ting special requirements of specified tests which may vary according to the application (e.g. construction, marine, transport) and the country of use (see Clause 6.3.2 and Annex B). Specified as HPL/EN438-4/CGF. Other laminates having special characteristics are also available but these products ar
33、e outside the scope of this part of the standard. 5 Characteristics and applications HPL Compact laminates have the following characteristics: Attractive aesthetic qualities High mechanical strength Durability (high resistance to impact, wear and scratching) Good dimensional stability High resistanc
34、e to the effects of water, steam, heat and frost Non-corrosive Good colour fastness Easy to clean and maintain (good anti-graffiti properties) Hygienic Good chemical resistance No dust attraction Ease of installation Good fire performance Typical applications include wall cladding, partitions, doors
35、, cubicles, lockers, laboratory bench tops, and various self-supporting components in construction, marine and transport industries. When Compact laminates are self-supporting they are ready for installation and only require cutting to size, drilling, etc. to suit the application. EN 438-4:2005 (E)
36、6 6 Requirements 6.1 Compliance Compact laminate types CGS and CGF shall meet all appropriate requirements specified in clauses 6.2, 6.3, and 6.4. This applies to both full-size sheets and cut-to-size panels. 6.2 Inspection requirements 6.2.1 General Inspection shall be carried out in accordance wit
37、h EN 438-2, Test Method 4 at a distance of 1,5 m. 6.2.2 Colour and pattern When inspected in daylight or D65 standard illuminate and again under tungsten illuminate F, there shall be no significant difference between the corresponding colour reference sample held by the supplier and the specimen und
38、er test. NOTE Where colour and surface finish are critical, it is recommended that sheets be checked for colour and surface-finish compatibility before fabrication or installation. 6.2.3 Surface finish When inspected at different viewing angles, there shall be no significant difference between the c
39、orresponding surface-finish reference sample held by the supplier and the specimen under test. NOTE Where colour and surface finish are critical, it is recommended that sheets be checked for colour and surface-finish compatibility before fabrication or installation. 6.2.4 Visual inspection The follo
40、wing inspection requirements are intended as a general guide, indicating the minimum acceptable quality for each decorative face of a laminate supplied as a full-size sheet. Cut-to-size panels and certain applications involving full-size sheets may call for special quality requirements which can be
41、negotiated between supplier and purchaser; in such cases the following requirements may be used as a basis for agreement. It should be noted that only a small percentage of sheets in a batch (the level to be agreed with the customer) should contain defects of the minimum acceptable level. It may be
42、agreed between purchaser and supplier that the visual quality standard applies to one decorative face only. 6.2.4.1 Surface quality The following surface defects are permissible: Dirt, spots and similar surface defects The admissible size of such defects is based on a maximum contamination area equi
43、valent to 1,0 mm 2 /m 2of laminate and is proportional to the sheet size under inspection. The total admissible area of contamination may be concentrated in one spot or dispersed over an unlimited amount of smaller defects. EN 438-4:2005 (E) 7 Fibres, hairs and scratches The admissible size of defec
44、ts is based on a maximum contamination length equivalent to 10 mm/m 2of laminate and is proportional to the sheet size under inspection. The total admissible length of contamination may be concentrated in one defect or dispersed over an unlimited amount of smaller defects. 6.2.4.2 Edge quality Edge
45、chipping up to 3 mm on each side is permissible. 6.3 Dimensional tolerance requirements Dimensional tolerance requirements are specified in Table 2. Table 2 Dimensional tolerances Property Test method (EN 438-2, Clause no.) Requirement 2,0 t 3,0 mm: 0,20 mm maximum variation 3,0 t 5,0 mm: 0,30 mm ma
46、ximum variation 5,0 t 8,0 mm: 0,40 mm maximum variation Thickness 5 8,0 t 12,0 mm: 0,50 mm maximum variation 12,0 t 16,0 mm: 0,60 mm maximum variation 16,0 t 20,0 mm: 0,70 mm maximum variation 20,0 t 25,0 mm: 0,80 mm maximum variation 25,0 t To be agreed between supplier and customer. (where t = nom
47、inal thickness) Flatness a)9 2,0 t 6,0 mm: 8,0 mm/m maximum deviation 6,0 t 10,0 mm: 5,0 mm/m maximum deviation 10,0 t : 3,0 mm/m maximum deviation (where t = nominal thickness) Length and width b)6 + 10 mm / -0 mm Straightness of edges b)7 1,5 mm/m maximum deviation Squareness. b)8 1,5 mm/m maximum
48、 deviation a)Provided that the laminates are stored in the manner and conditions recommended by the manufacturer they shall comply with the flatness requirements specified in Table 2 when measured in accordance with EN 438-2, Clause 9. The flatness values specified in Table 2 apply to laminates with
49、 two decorative faces. Limits for laminates with one face sanded shall be agreed between supplier and customer. b)Tolerances for cut-to-size panels shall be agreed between supplier and purchaser. 6.4 Test requirements 6.4.1 General requirements General requirements are specified in Table 3. EN 438-4:2005 (E) 8 Table 3 General requirements Property Test method (EN 438-2, Clause no. unless otherwise
