1、BS EN 622-5:2009ICS 79.060.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFibreboards SpecificationsPart 5: Requirements for dry processboards (MDF)This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 May201
2、0. BSI 2010ISBN 978 0 580 62907 5Amendments/corrigenda issued since publicationDate CommentsBS EN 622-5:2009National forewordThis British Standard is the UK implementation of EN 622-5:2009. Itsupersedes BS EN 622-5:2006 which is withdrawn.The UK participation in its preparation was entrusted to Tech
3、nicalCommittee B/541, Wood based panels.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British
4、 Standard cannot confer immunityfrom legal obligations.BS EN 622-5:2009EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE 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 -
5、Exigences - Partie 5 : Exigences pour panneaux obtenus par procd 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 Regul
6、ations 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
7、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 th
8、e 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, Switzerlan
9、d and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 62
10、2-5:2009: EBS EN 622-5:2009EN 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
11、conditions .7 4.2.2 Requirements for boards for use in humid conditions7 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
12、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 boar
13、ds . 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
14、 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 dr
15、y 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
16、 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
17、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 BS EN 622-5:2009EN 622-5:2009 (E) 3 Foreword This document (EN 622-5:2009) has bee
18、n 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 standa
19、rds 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 622-5:20
20、06. 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
21、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
22、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 Un
23、ited Kingdom. BS EN 622-5:2009EN 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 calculat
24、ions1). 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
25、 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 chan
26、ges 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 resistan
27、ce 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 Samp
28、ling, 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 moi
29、sture 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 De
30、termination 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. BS EN 622-5:2009EN 622-5:2009 (E) 5 EN 13986:2004, Wood-based panels for u
31、se 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 co
32、rresponding 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 c
33、lass 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 Boa
34、rds 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 us
35、e 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
36、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 wee
37、k Instantaneous BS EN 622-5:2009EN 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
38、 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 relev
39、ant 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)
40、, 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
41、 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 intern
42、al 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 charact
43、erised by a moisture content in the material corresponding to a temperature of 20 C and a relative humidity of 65 % before the treatment (immersion in water or boil treatment). The moisture resistance of dry process boards for use in humid conditions (see Tables 4, 6, 8 and 11) is assessed by showin
44、g compliance with either one of two options: Option 1: Swelling in thickness and internal bond after cyclic test (according to EN 321); Option 2: Internal bond after immersion in boiling water (according to EN 1087-1:1995), with the modified procedure given in Annex A. When verifying compliance by e
45、xternal control, only the test option performed and notified by the manufacturer shall be carried out. If the option is unknown, it will be necessary to carry out both sets of procedures, even though compliance with only one set of specifications is required. BS EN 622-5:2009EN 622-5:2009 (E) 7 4.2
46、Requirements for non load-bearing boards, including boards for general purpose use 4.2.1 Requirements for boards for use in dry conditions Table 3 specifies the requirements for general purpose boards for use in dry conditions, particularly interior fitments including furniture. Table 3 Requirements
47、 for general purpose boards for use in dry conditions (type MDF) Property Test method Unit Ranges of nominal thickness mm 1,8to 2,5 2,5to 4 4to 6 6to 9 9 to 12 12 to 19 19 to 30 30to 45 45Swelling in thickness 24 h EN 317 % 45 35 30 17 15 12 10 8 6 Internal bond EN 319 N/mm20,65 0,65 0,65 0,65 0,60
48、0,55 0,55 0,50 0,50Bending strength EN 310 N/mm223 23 23 23 22 20 18 17 15 Modulus of elasticity in bending EN 310 N/mm2 2 700 2 700 2 500 2 200 2 100 1 900 1 7004.2.2 Requirements for boards for use in humid conditions Table 4 specifies the requirements for general purpose boards for use in humid c
49、onditions. Table 4 Requirements for general purpose boards for use in humid conditions (type MDF.H) Property Test method Unit Ranges of nominal thickness mm 1,8to 2,5 2,5to 4 4to 6 6to 9 9 to 12 12 to 19 19 to 30 30to 45 45Swelling in thickness 24 h EN 317 % 35 30 18 12 10 8 7 7 6 Internal bond EN 319 N/mm20,70 0,70 0,70 0,80 0,80 0,75 0,75 0,70 0,60 Bending strength EN 310 N/mm227 27 27 27 26 24 22 17 15 Modulus of elasticity in bending EN 310 N/mm2 2 700 2 700 2 700 2 700 2 500 2
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