EN 438-8:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dekorative Hochdruck-Schichtpressstoffplatten (HPL) - Platten auf Basis härtbarer Harze (Schichtpressstoffe) - Teil 8: Klassifizierung und Spezifikationen für Design-SchichtpressstoffeStratifiés 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 spéciauxHigh-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (Usually called Laminates) - Part 8: Classification and specifications for design laminates83.140.20Laminated sheetsICS:Ta slovenski standard je istoveten z:EN 438-8:2009SIST EN 438-8:2009en,fr,de01-julij-2009SIST EN 438-8:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 438-8March 2009ICS 83.140.20 English VersionHigh-pressure decorative laminates (HPL) - Sheets based onthermosetting resins (Usually called Laminates) - Part 8:Classification and specifications for design laminatesStratifiés décoratifs haute pression (HPL) - Plaques à basede résines thermodurcissables (communément appeléesstratifiés) - Partie 8 : Classification et spécificationsrelatives aux stratifiés à effets de surface spéciauxDekorative Hochdruck-Schichtpressstoffplatten (HPL) -Platten auf Basis härtbarer Harze (Schichtpressstoffe) - Teil8: Klassifizierung und Spezifikationen für Design-SchichtpressstoffeThis 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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 438-8:2009: ESIST EN 438-8:2009

1 In preparation. SIST EN 438-8:2009

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 SIST EN 438-8:2009

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 < 2 mm)
S (Standard grade) or P (Postformable grade) or F (Flame retardant grade)
Type S – Standard grade high-pressure decorative design laminates. Type P – Postformable high-pressure decorative design laminates, similar to type S but can also be formed at elevated temperature. Type F – High-pressure decorative design laminates with improved fire retardance similar to type S or P but also complying with special requirements of specified tests which may vary according to the application (e.g. construction, marine, transport) and the country of use (see 5.4.5).
In addition to the abbreviation "HPL" and the number of this European Standard, materials shall be specified by the alphabetical classification system.
EXAMPLE "Pearlescent Standard Grade Thin high-pressure decorative design laminate" is designated as HPL/EN 438-8 ATS. SIST EN 438-8:2009

5.2 Inspection requirements 5.2.1 General Inspection shall be carried out in accordance with EN 438-2:2005, Clause 4, at a distance of 1,5 m. 5.2.2 Colour, pattern and surface finish 5.2.2.1 Pearlescent When inspected in daylight or D65 standard illuminant, as specified in ISO 11664-2, and also under tungsten-filament lightning illuminant A as specified in ISO 11664-2, a slight difference between the corresponding colour reference sample held by the supplier and the specimen under test is acceptable.
As colour and surface finish are critical, it is recommended that sheets are checked for colour and surface-finish compatibility without protective film before fabrication or installation. Some of these products are directional in surface finish or colour and they shall be installed in the correct orientation. 5.2.2.2 Metal
When inspected in daylight or D65 standard illuminant, as specified in ISO 11664-2, and also under tungsten-filament lightning illuminant A as specified in ISO 11664-2, a slight difference between the corresponding colour reference sample held by the supplier and the specimen under test is acceptable.
As colour and surface finish are critical, it is recommended that sheets are checked for colour and surface-finish compatibility without protective film before fabrication or installation. Some of these products are directional in surface finish or colour and they shall be installed in the correct orientation. Small indentations in the surface are unavoidable.
5.2.2.3 Wood veneer
Due to the fact that wood is a natural product, each veneer may be considered as unique. Slight colour and structure differences are considered as normal. Singularities such as knots and resin inclusions are not considered as defects, but as a part of the decor. There are differences in light fastness performances depending on the wood species and the source of the wood. 5.2.3 Reverse side The reverse side of single-sided sheets shall be suitable for adhesive bonding (e.g. sanded). In the case of sanded backs, slight chatter marks shall be permitted.
The following inspection requirements are intended as a general guide, indicating the minimum acceptable quality for laminates. Cut-to-size panels and certain applications involving full-size sheets may call for special quality requirements which can be negotiated between supplier and purchaser; in such cases the following requirements may be used as a basis for agreement. Only a small percentage of sheets in a batch (the level to be agreed with the customer) shall contain defects of the minimum acceptable level. 5.2.4.2 Surface quality The following surface defects are permissible: Dirt, spots, dents and similar surface defects The admissible size of such defects is based on a maximum contamination area equivalent to 1,0 mm2/m2 of laminate and is proportional to the sheet size under inspection. The
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