Fibreboards - Specifications - Part 5: Requirements for dry process boards (MDF)

This European Standard specifies the requirements for dry process boards (MDF) as defined in EN 316.
The values listed in this European Standard relate to product properties but they are not characteristic values to be used in design calculations.

Faserplatten - Anforderungen - Teil 5: Anforderungen an Platten nach dem Trockenverfahren (MDF)

Diese Europäische Norm legt die Anforderungen an Platten nach dem Trockenverfahren (MDF) nach EN 316
fest.
Die in dieser Europäischen Norm angegebenen Werte beziehen sich auf Produkteigenschaften, es sind keine
charakteristischen Werte, die für konstruktive Berechnungen verwendet werden können1).

Panneaux de fibres - Exigences - Partie 5: Exigences pour panneaux obtenus par procédé à sec (MDF)

La présente norme européenne prescrit les exigences pour les panneaux obtenus par procédé à sec (MDF), tels que définis dans l’EN 316.
Les valeurs données dans la présente Norme Européenne concernent les caractéristiques du produit mais ne sont pas les valeurs caractéristiques à utiliser dans les calculs de conceptions. )

Vlaknene plošče - Specifikacije - 5. del: Zahteve za plošče, izdelane po suhem postopku (MDF)

Ta evropski standard določa zahteve za plošče, izdelane po suhem postopku (MDF), kot je opredeljeno v EN 316. Vrednosti, navedene v tem evropskem standardu, se nanašajo na lastnosti proizvodov, vendar niso značilne vrednosti, ki bi jih uporabili v izračunih pri načrtovanju.

General Information

Status
Published
Publication Date
10-Nov-2009
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
11-Nov-2009
Completion Date
11-Nov-2009

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Faserplatten - Anforderungen - Teil 5: Anforderungen an Platten nach dem Trockenverfahren (MDF)Panneaux de fibres - Exigences - Partie 5: Exigences pour panneaux obtenus par procédé à sec (MDF)Fibreboards - Specifications - Part 5: Requirements for dry process boards (MDF)79.060.20Fibre and particle boardsICS:Ta slovenski standard je istoveten z:EN 622-5:2009SIST EN 622-5:2010en,fr,de01-april-2010SIST EN 622-5:2010SLOVENSKI

STANDARDSIST EN 622-5:20061DGRPHãþD
SIST EN 622-5:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 622-5
November 2009 ICS 79.060.20 Supersedes EN 622-5:2006English Version
Fibreboards - Specifications - Part 5: Requirements for dry process boards (MDF)

Panneaux de fibres - Exigences - Partie 5 : Exigences pour panneaux obtenus par procédé à sec (MDF)

Faserplatten - Anforderungen - Teil 5: Anforderungen an Platten nach dem Trockenverfahren (MDF) This European Standard was approved by CEN on 3 October 2009.

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 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 622-5:2009: ESIST EN 622-5:2010

EN 622-5:2009 (E) 2 Contents Page Foreword ..............................................................................................................................................................3 1 Scope ......................................................................................................................................................4 2 Normative references ............................................................................................................................4 3 Terms and definitions ...........................................................................................................................5 4 Requirements .........................................................................................................................................6 4.1 General ....................................................................................................................................................6 4.2 Requirements for non load-bearing boards, including boards for general purpose use ..............7 4.2.1 Requirements for boards for use in dry conditions ...........................................................................7 4.2.2 Requirements for boards for use in humid conditions......................................................................7 4.3 Requirements for load-bearing boards ...............................................................................................8 4.3.1 Requirements for load-bearing boards for use in dry conditions ....................................................8 4.3.2 Requirements for load-bearing boards for use in humid conditions ...............................................8 4.4 Requirements for light MDF boards for non load-bearing applications, including general purpose boards ......................................................................................................................................9 4.4.1 Requirements for boards for use in dry conditions ...........................................................................9 4.4.2 Requirements for boards for use in humid conditions................................................................... 10 4.5 Requirements for ultra-light MDF boards for non load-bearing applications, including general purpose boards ..................................................................................................................... 10 4.6 Requirements for boards for use in rigid underlays in roofing and walls .................................... 11 5 Verification of compliance ................................................................................................................. 12 5.1 General ................................................................................................................................................. 12 5.2 External control ................................................................................................................................... 12 5.3 Factory production control ................................................................................................................ 12 6 Supplementary properties ................................................................................................................. 12 7 Marking ................................................................................................................................................ 13 7.1 Boards marketed within the European Economic Area for construction applications............... 13 7.2 Other boards ....................................................................................................................................... 13 Annex A (normative)

Boil test according to EN 1087-1 - Modified procedure ........................................... 14 Bibliography ..................................................................................................................................................... 15

Tables Table 1 — Load duration category ................................................................................................................... 5 Table 2 — Examples of load-duration assignment ........................................................................................ 6 Table 3 — Requirements for general purpose boards for use in dry conditions (type MDF) .................... 7 Table 4 — Requirements for general purpose boards for use in humid conditions (type MDF.H) ........... 7 Table 5 — Requirements for load-bearing boards for use in dry conditions (type MDF.LA) .................... 8 Table 6 — Requirements for load-bearing boards for use in humid conditions (MDF.HLS) ..................... 9 Table 7 — Requirements for light MDF boards for use in dry conditions (type L-MDF) ............................ 9 Table 8 — Requirements for light MDF boards for use in humid conditions (type L.MDF.H) ................. 10 Table 9 — Requirements for ultra-light MDF boards for use in dry conditions (type UL1-MDF) ............ 10 Table 10 — Requirements for ultra-light MDF boards for use in dry conditions (type UL2-MDF) .......... 11 Table 11 — Requirements for use in rigid underlays in roofs and walls (type MDF.RWH) ...................... 11 Table 12 — Maximum interval between test ................................................................................................. 12 Table 13 — Supplementary properties .......................................................................................................... 12

SIST EN 622-5:2010

EN 622-5:2009 (E) 3 Foreword This document (EN 622-5:2009) 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 May 2010, and conflicting national standards shall be withdrawn at the latest by May 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 622-5:2006. This standard is one of a series specifying requirements for fibreboards. The other parts of this series are listed in Clause 2 and in the bibliography. Compared to EN 622-5:2006 the following modifications have been made: a) Panel type MDF.RWH also intended for instantaneous or short-term load duration as a rigid underlay in roofing and walls; b) Requirement for swelling in thickness after cyclic testing changed for panel type MDF.RWH in Table 11. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: 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 the United Kingdom. SIST EN 622-5:2010

EN 622-5:2009 (E) 4

1 Scope This European Standard specifies the requirements for dry process boards (MDF) as defined in EN 316. The values listed in this European Standard relate to product properties but they are not characteristic values to be used in design calculations1). 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 310, Wood-based panels  Determination of modulus of elasticity in bending and of bending strength EN 311, Wood-based panels  Surface soundness  Test method EN 317, Particleboards and fibreboards  Determination of swelling in thickness after immersion in water EN 318, Wood based panels  Determination of dimensional changes associated with changes in relative humidity EN 319, Particleboards and fibreboards  Determination of tensile strength perpendicular to the plane of the board EN 320, Fibreboards  Determination of resistance to axial withdrawal of screws EN 321, Wood-based panels  Determination of moisture resistance under cyclic test conditions EN 326-1, Wood-based panels  Sampling, cutting and inspection  Part 1: Sampling and cutting of test pieces and expression of test results EN 326-2, Wood-based panels  Sampling, cutting and inspection  Part 2: Quality control in the factory EN 326-3, Wood-based panels  Sampling, cutting and inspection  Part 3: Inspection of an isolated lot of panels EN 382-1, Fibreboards  Determination of surface absorption  Part 1: Test method for dry process fibreboards EN 622-1, Fibreboards  Specifications  Part 1: General requirements EN 1087-1:1995, Particleboards  Determination of moisture resistance  Part 1: Boil test EN 12871, Wood-based panels  Performance specifications and requirements for load bearing boards for use in floors, walls and roofs EN 13271, Timber fasteners  Characteristic load-carrying capacities and slip-moduli for connector joints EN 13446, Wood-based panels  Determination of withdrawal capacity of fasteners

1) Such characteristic values (e.g. for use in design calculation in EN 1995-1-1) are either given in EN 12369-1 or derived by testing according to EN 789, EN 1058 and ENV 1156. SIST EN 622-5:2010

EN 622-5:2009 (E) 5 EN 13986:2004, Wood-based panels for use in construction  Characteristics, evaluation of conformity and marking ISO 3340, Fibre building boards  Determination of sand content 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13986:2004 and the following apply. 3.1 dry conditions conditions corresponding to service class 1 of EN 1995-1-1 which is characterized by a moisture content in the material corresponding to a temperature of 20 °C and a relative humidity of the surrounding air only exceeding 65 % for a few weeks per year NOTE Boards of this type are suitable for use only in hazard class 1 of EN 335-3. 3.2 humid conditions conditions corresponding to service class 2 of EN 1995-1-1 which is characterized by a moisture content in the material corresponding to a temperature of 20 °C and a relative humidity of the surrounding air only exceeding 85 % for a few weeks per year NOTE Boards of this type are suitable for use in hazard classes 1 and 2 of EN 335-3. 3.3 general purpose use use in non load-bearing applications not otherwise specified 3.4 non load-bearing use use in non load-bearing conditions, e.g. as part of a building or construction 3.5 load-bearing use structural use use in a load-bearing construction, i.e. an organized assembly of connected parts designed to provide mechanical resistance and stability to the works 3.6 load duration class class characterized by the effect of a constant load acting for a certain period of time in the life of the structure NOTE 1 The load duration classes are defined in EN 1995-1-1, see Table 1. Table 1 — Load duration category Load duration class Order of accumulated duration of characteristic load

Permanent
More than ten years
Long-term
six months to ten years
Medium-term
one week to six months
Short-term
Less than one week
Instantaneous
SIST EN 622-5:2010

EN 622-5:2009 (E) 6 NOTE 2 Examples of load-duration assignment are given in Table 2. Since climatic loads (snow, wind) vary between countries, the assignment of load-duration classes may be specified in the national annex. Table 2 — Examples of load-duration assignment Load duration class Examples of loading

Permanent Self weight
Long-term Storage
Medium-term Imposed floor load, snow
Short-term Snow, wind
Instantaneous Wind, accidental load

4 Requirements 4.1 General Dry process boards shall comply with the general requirements of EN 622-1 together with the relevant requirements set out in 4.2, 4.3, 4.4, 4.5 and 4.6 of this European Standard. Some supplementary properties and their appropriate test methods are given in Clause 6. The requirements in Tables 3 to 11 shall be met by 5 percentile values (95 percentile values in the case of swelling in thickness), based on the mean test values for individual panels and calculated in accordance with EN 326-1. In the case of swelling in thickness, they shall be equal to or less than the values in the tables, and in the case of all other properties, they shall be equal to or greater than the values in Tables 3 to 11. The values in Tables 3 to 11 for both bending strength and modulus of elasticity shall apply to test results obtained in the weakest direction in the plane of the panel. Properties not required for specific thickness ranges are marked "—". With the exception of swelling in thickness and internal bond after boil test (see Tables 4, 6, 8 and 11), the values given in the tables are characterised by a moisture content in the material corresponding to a temperature of 20 °C and a relative humidity of 65 %. The values given for swelling in thickness and internal bond after boil test are characterised by a

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