EUROPEAN STANDARDNORME EUROPÉENNE EUROPÄISCHE NORM EN 14322 March 2004 ICS 79.060.01 English version Woodbased panels Melamine faced boards for interior uses -Definition, requirements a
Trang 1BRITISH STANDARD BS EN
14322:2004
Wood-based panels —
Melamine faced boards
for interior uses —
Definition,
requirements and
classification
The European Standard EN 14322:2004 has the status of a
British Standard
ICS 79.060.01
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Trang 2This British Standard was
published under the authority
of the Standards Policy and
Strategy Committee on
11 May 2004
© BSI 11 May 2004
National foreword
This British Standard is the official English language version of
EN 14322:2004
The UK participation in its preparation was entrusted to Technical Committee B/541, Wood-based panels, which has the responsibility to:
A list of organizations represented on this committee can be obtained on request to its secretary
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Summary of pages
This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, 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 since publication
Trang 3EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
EN 14322
March 2004
ICS 79.060.01
English version Woodbased panels Melamine faced boards for interior uses
-Definition, requirements and classification
Panneaux à base de bois - Panneaux surfacés mélaminés
pour usages intérieurs - Définition, exigences et
classification
Holzwerkstoffe - Melaminbeschichtete Platten zur Verwendung im Innenbereich - Definition, Anforderungen
und Klassifizierung
This European Standard was approved by CEN on 16 January 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
C O M I T É E U R O P É E N D E N O R M A L I S A T I O N
E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved
worldwide for CEN national Members.
Ref No EN 14322:2004: E
Trang 4Contents Page
Foreword 3
1 Scope 4
2 Normative references 4
3 Terms and definitions 4
4 Requirements 4
5 Appearance 5
5.1 Colour matching 5
5.2 Surface texture 6
6 Classification by resistance to abrasion 6
7 Verification of compliance 6
7.1 General 6
7.2 Factory production control 6
7.3 External control 6
8 Marking 7
Annex A (normative) Supplementary properties 8
Annex B (normative) Formaldehyde release 9
Bibliography 10
Trang 5EN 14322:2004 (E)
3
Foreword
This document (EN 14322:2004) has been prepared by Technical Committee CEN/TC 112 “Wood-based panels”, the secretariat of which is held by DIN
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 2004, and conflicting national standards shall be withdrawn at the latest by September 2004
Annexes A and B are normative
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
Trang 61 Scope
This European Standard specifies the surface requirements and dimensional tolerances for decorative melamine faced boards for interior use which are common for particleboards and fibreboards
This standard does not apply to boards laminated with so called priming foils, finish foils, laminates according
to EN 438-1
This standard does not apply to laminate floor coverings
Melamine faced wood-based boards in accordance with this standard may be referred to as MFB
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies (including amendments)
EN 311, Wood-based panels - Surface soundness - Test method
ENV 717-1, Wood-based panels - Determination of formaldehyde release - Part 1: Formaldehyde emission by the chamber method
EN 717-2, Wood-based panels - Determination of formaldehyde release - Part 2: Formaldehyde release by the gas analysis method
EN 14323, Wood-based panels - Melamine faced boards for interior uses - Test methods
3 Terms and definitions
For the purposes of this European Standard, the following term and definition applies
melamine faced board
MFB
board manufactured by directly applying uncured aminoplastic resin impregnated papers to one or both faces
of board substrates and achieving bonding and curing in the same process using heat and pressure but without the use of an intermediate adhesive The resin of the surface layer is an aminoplastic resin (mainly melamine resin)
The board surfaces may be smooth or structured on one or both faces and the outer surfaces having decorative colours or design
4 Requirements
Melamine faced boards shall comply with the general requirements as listed in Table 1 when dispatched from the producing factory
Trang 7EN 14322:2004 (E)
5
Table 1 — General requirements at dispatch
Requirement
< 15 ≥ 15 to 20 > 20
± 0,3 for class 1 and class 2 according to Table 2
+ 0,5/– 0,3 for class 3A, 3B and class 4 according to Table 2 and all gloss finishes
± 0,5
Tolerances on nominal dimensions
— thickness relative to nominal value
t max –t min ≤ 0,6 1)
Length & width
— commercially available size
— pre-cut panels
EN
± 5
± 2,5 2) Flatness
EN
≤ 2 (only for balanced surfaces)
— commercially available sizes
— pre-cut panels
EN
≤ 10
≤ 3
14323
mm2/m2 mm/m2
points ≤ 2 length ≤ 20
8) Formaldehyde release
(see annex B)
Class E1 or Class E2
NOTE 1 For the physical and dimensional properties, refer to the relevant standards from the series EN 312 or
EN 622
NOTE 2 Normally, unless otherwise specified, the particleboard grade used will be as required in EN 312/P2, the MDF grade will be as described in EN 622-5 (MDF) and the hardboard grade will be as described in EN 622-2 (HB) NOTE 3 On request of the customer other values can be specified
NOTE 4 Numerous factors including changes in temperature and relative humidity in storage and fabrication areas
at building sites may cause boards and panels to bow or twist irreversibly
5 Appearance
5.1 Colour matching
Where colour matching is required by the purchaser there shall be only slight deviation (rating 4) between the reference sample and test piece under examination when inspected according to test method given in
EN 14323 For mother of pearl and metallic finishes a rating 3 is permitted
Trang 8NOTE Since slight variations in colour will occur due to inherent variation in the surfacing papers and the core board,
it is recommended that boards or panels to be used side by side should be selected from the same production batch where possible and matched to ensure colour compatibility before fabrication or installation
5.2 Surface texture
Where matching of surface texture is required by purchaser there shall be only slight deviation (rating 4) between the reference sample and test piece under examination when inspected according to test method given in EN 14323
6 Classification by resistance to abrasion
Five classes are defined in the classification system based on the wear resistance (WR) and the initial wear point (IP) as shown in Table 2 The number of revolutions for each classification is determined according to
EN 14323
Table 2 — Classification of MFB according to the wear resistance and the initial wear point
Revolutions
WR
Revolutions
7 Verification of compliance
7.1 General
Verification of compliance with this EN shall be carried out using the test methods specified in EN 14323
7.2 Factory production control
The properties in Tables 1 and 2 shall be controlled by the producer Sampling shall be carried out at random Alternative test methods and/or unconditioned test pieces may be used for factory production control
7.3 External control
If external control is deemed necessary, the test method listed in EN 14323 shall be used
Trang 9EN 14322:2004 (E)
7
8 Marking
Each panel shall be clearly marked by the manufacturer by indelible direct printing on the edge or by a label with at least the following information in this sequence:
a) manufacturer’s name, trade mark, or identification mark;
b) number of the relevant specification EN of the substrate and the type;
c) nominal thickness;
d) formaldehyde class;
e) batch number
NOTE Where the first purchaser is the user of the product and where he/she agrees that marking (other than on the package) is unnecessary, the marking of such individual panels in the package need not be undertaken
Trang 10Annex A
(normative)
Supplementary properties
For certain applications, information on some of the properties listed in Table A.1 can be required On request, this information shall be supplied by the MFB manufacturer, and in this case shall have been derived using the
EN test methods listed in Table A1
Table A.1 — Supplementary properties and test methods
Resistance to impact by large diameter steel ball EN 14323 Resistance to colour change in xenon arc light EN 14323
Trang 11EN 14322:2004 (E)
9
Annex B
(normative)
Formaldehyde release
Melamine faced boards shall be tested and classified into one of two classes: E1 or E2
The test requirements for both initial type testing and factory production control continuous surveillance are laid down in Table B.1 for E1 products and Table B.2 for E2 products
NOTE 1 Boards of Class E1 can be used without causing an indoor air concentration greater than 0,1 ppm HCHO in conditions according to ENV 717-1
NOTE 2 If the core board has a classification E1 and as during the melamine faced production processing there is negligible amounts of formaldehyde added, the final product MFB is classified E1
The limit values for the Class E1 are given in Table B.1 and for Class E2 are given in Table B.2
Table B.1 — Definition of formaldehyde class E1
Initial type testinga
Factory production
a For established products, initial testing may also be done on the basis of existing data with EN 717-2 testing, either from factory production control or from external inspection
Table B.2 — Definition of formaldehyde class E2
Test method ENV 717-1 either
Requirement Release > 0,124 mg/m3 air Test method EN 717-2
Initial type testing
or Requirement Release > 3,5 mg/m2 h to ≤ 8 mg/m2 h Test method EN 717-2
Factory production
h to ≤ 8 mg/m2 h
Trang 12[1] EN 312, Particleboards — Specifications
[2] EN 438-1, Decorative high-pressure laminates (HPL) - Sheets based on thermosetting resins - Part 1: Specifications (ISO 4586-1:1987, modified)
[3] prEN 438-2:2002, High pressure decorative laminates (HPL) – Sheets based on thermosetting resins (usually called laminates) – Part 2: Determination of properties
[4] EN 622-1, Fibreboards — Specifications — Part 1: General requirements
[5] EN 622-2, Fibreboards — Specifications — Part 2: Requirements for hardboards
[6] EN 622-5, Fibreboards — Specifications — Part 3: Requirements for dry process boards (MDF)
Trang 13blank
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