SIST EN 438-3:2005

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 3: Klassifizierung und Spezifikationen für Schichtpressstoffe mit einer Dicke kleiner als 2 mm, vorgesehen zum Verkleben auf ein TrägermaterialStratifiés décoratifs haute pression (HPL) - Plaques a base de résines thermodurcissables (communément appelées stratifiés) - Partie 3 : Classification et spécifications des stratifiés d'épaisseur inférieure a 2 mm destinés a etre collés sur des supportsHigh-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (Usually called Laminates) - Part 3: Classification and specifications for laminates less than 2 mm thick intended for bonding to supporting substrates83.140.20Laminated sheetsICS:Ta slovenski standard je istoveten z:EN 438-3:2005SIST EN 438-3:2005en01-maj-2005SIST EN 438-3:2005SLOVENSKI
STANDARD



SIST EN 438-3:2005



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 438-3
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 3: Classification and specifications for laminates less than 2 mm thick intended for bonding to supporting substrates
Stratifiés décoratifs haute pression (HPL) - Plaques à base de résines thermodurcissables (communément appelées stratifiés) - Partie 3 : Classification et spécifications des stratifiés d'épaisseur inférieure à 2 mm destinés à être collés sur des supports
Dekorative Hochdruck-Schichtpressstoffplatten (HPL) - Platten auf Basis härtbarer Harze (Schichtpressstoffe) - Teil 3: Klassifizierung und Spezifikationen für Platten mit einer Dicke kleiner als 2 mm, vorgesehen zum Verkleben auf ein Trägermaterial This European Standard was approved by CEN on 16 August 2004.
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 Central 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 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, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 national Members. Ref. No. EN 438-3:2005: ESIST EN 438-3:2005



EN 438-3:2005 (E) 2 Contents page Foreword.3 1 Scope.4 2 Normative references.4 3 Term and Definition.4 4 Material types.4 5 Classification systems.5 6 Requirements.7 Annex A (informative)
Addendum to Table 5 relating to test method 25: Scratch Resistance.12 Annex B (informative)
Addendum to Clause 6.4.3, relating to fire performance.13 Annex C (informative) Addendum relating to electrostatic properties.14 Bibliography.15
SIST EN 438-3:2005



EN 438-3:2005 (E) 3 Foreword This document (EN 438-3:2005) has been prepared by Technical Committee CEN/TC 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 2005. This document supersedes EN 438-1:1991 and EN 438-2:1991. This Standard consists of seven 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 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
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European 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.
SIST EN 438-3:2005



EN 438-3:2005 (E) 4
1 Scope This Part of EN 438 applies to laminates less than 2 mm thick normally intended for bonding to supporting substrates to produce HPL composite panels and establishes a classification system for high-pressure decorative laminates according to their performance and main recommended fields of application, including materials with special characteristics, for example formability or defined reaction to fire.
This Part of EN 438 also specifies requirements for the properties of the various types of laminates covered by this classification system. High-pressure decorative laminates are characterised by their qualities, durability and functional performance. HPL sheets are available in a wide variety of colours, patterns and surface finishes; they are resistant to wear, scratching, impact, moisture, heat and staining; and possess good hygienic and anti-static properties, being easy to clean and maintain. EN 438-2 specifies the methods of test relevant to this Part of EN 438. Parts 4, 5, etc. of EN 438 are reserved for special types of HPL materials. 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, 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) EN ISO 1183-1:2004, Plastics - methods for determining the density 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 laminate(s) (HPL) Sheet(s) consisting of 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 side, having decorative colours or designs, are impregnated with melamine based resins.
The core layers are impregnated with phenolic based resins.
The back of the sheet(s) is made suitable for adhesive bonding to a substrate. 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 increased density (≥1,35 g/cm³), and with the required surface finish. 4 Material types 4.1 Type S - Standard grade decorative laminates. 4.2 Type P - Postformable decorative laminates; similar to type S but can also be formed at elevated temperature. 4.3 Type F - Decorative laminates with improved fire retardance; similar to types S or P but also meeting special requirements of specified fire tests which may vary according to the application (e.g. construction, marine, transport) and the country of use (see Clause 6.4.3 and Annex B).
SIST EN 438-3:2005



EN 438-3:2005 (E) 5 5 Classification systems 5.1 General Two different HPL classification systems are commonly used in Europe, and both have been included in this document as alternatives. 5.2 Numerical classification system In this system the classification of a letter denoting material type (see Clause 4) followed by three index numbers showing the levels of performance for wear resistance, impact resistance and scratch resistance respectively.
Table 1 shows the performance levels corresponding to the index numbers. Table 1 — Numerical classification FIRST INDEX NUMBER - WEAR RESISTANCE a) 2 3 4
≥50 ≥ 150 ≥ 350
INITIAL POINT(revs) WEAR VALUE (revs)
≥150 ≥ 350
≥ 1000
SECOND INDEX NUMBER - IMPACT RESISTANCE a)
2 3 4 SMALL DIAMETER BALL (N) ≥ 15 ≥ 20 ≥ 25
THIRD INDEX NUMBER - SCRATCH RESISTANCE a)
2 3 4 SCRATCH RESISTANCE (Rating) 2 3 4 a) Index numbers 2, 3, and 4 are specified to maintain consistency with EN 438:1991. Index number 1 represents a lower quality level that does not apply to HPL covered by the scope of this part of the standard.
5.3 Alphabetical classification system This system uses three letters to classify laminates as shown in Table 2. Table 2 — Alphabetical classification
FIRST LETTER SECOND LETTER THIRD LETTER
H
(HORIZONTAL GRADE)
G
(GENERAL PURPOSE)
S
(STANDARD GRADE) or V
(VERTICAL GRADE) or D
(HEAVY DUTY) or P
(POSTFORMABLE GRADE)
or F
(FLAME-RETARDANT GRADE)
SIST EN 438-3:2005



EN 438-3:2005 (E) 6
Table 3 compares the alternative classification systems and shows how different HPL products relate to some typical applications.
The list of typical applications shown for each category is for guidance only and is not intended to be comprehensive.
Table 3 — Classification system and typical applications
PERFORMANCE CATEGORY MATERIALTYPE NUMERICAL CLASSIFICATION
INDEX NUMBERS EQUIVALENT ALPHABETICAL CLASSIFICATION EXAMPLES OF TYPICAL APPLICATIONS
WEAR RESIST-ANCE IMPACTRESIST-ANCE SCRATCH RESIST-ANCE
VERY HIGH RESISTANCE TO SURFACE WEAR VERY
HIGH
RESISTANCE TO IMPACT VERY HIGH
RESISTANCE TO SCRATCHING
S, F or P
4
4
4 HDS (HORIZONTAL HEAVY-DUTY STANDARD),
HDF (HORIZONTAL HEAVY-DUTY FLAME-RETARDANT), OR
HDP (HORIZONTAL HEAVY- DUTY POSTFORMING) COUNTER TOPS, INSTITUTIONAL APPLICATIONS (PRISONS, MILITARY BARRACKS, ETC.)
HIGH RESISTANCE TO SURFACE WEAR HIGH RESISTANCE TO IMPACT HIGH RESISTANCE TO SCRATCHING
S, F or P
3
3
3 HGS (HORIZONTAL GENERAL-PURPOSE STANDARD),
HGF (HORIZONTAL GENERAL-PURPOSE FLAME-RETARDANT), OR HGP (HORIZONTAL GENERAL-PURPOSE POSTFORMING) KITCHEN AND OFFICE WORKING SURFACES, RESTAURANT AND
HOTEL TABLES,
DOORS AND WALL COVERINGS IN PUBLIC AREAS, INTERIOR WALLS OF PUBLIC TRANSPORT VEHICLES
MEDIUM RESISTANCE TO SURFACE WEAR
MEDIUM RESISTANCE TO
IMPACT MEDIUM RESISTANCE TO SCRATCHING
S, F or P
2
2
2 VGS (VERTICAL GENERAL-PURPOSE STANDARD),
VGF (VERTICAL GENERAL- PURPOSE FLAME-RETARDANT), OR VGP (VERTICAL GENERAL-PURPOSE POSTFORMING)
FRONT PANELS FOR KITCHEN, OFFICE AND BATHROOM FURNITURE, WALL COVERINGS, CEILING PANELS,
...