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1、BRITISH STANDARD BS EN 622-5:2006 Fibreboards Specifications Part 5: Requirements for dry process boards (MDF) The European Standard EN 622-5:2006 has the status of a British Standard ICS 79.060.20 ? BS EN 622-5:2006 This British Standard was published under the authority of the Standards Policy and
2、 Strategy Committee on 29 September 2006 BSI 2006 ISBN 0 580 49165 X National foreword This British Standard was published by BSI. It is the UK implementation of EN 622-5:2006. It supersedes BS EN 622-5:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Commi
3、ttee B/541, Wood based panels. A list of organizations represented on B/541 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cann
4、ot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 622-5 July 2006 ICS 79.060.20Supersedes EN 622-5:1997 English Version Fibreboards - Specifications - Part 5: Requirements for dry process boards (
5、MDF) Panneaux de fibres - 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 24 May 2006. CEN members are bound to comply with the CEN/
6、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 a
7、ny 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.
8、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, Romania, Slovakia, Slovenia, Spain, Sweden, Sw
9、itzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref.
10、No. EN 622-5:2006: E EN 622-5:2006 (E) 2 Contents Page Foreword3 1Scope 4 2Normative references4 3Terms and definitions .5 4Requirements.6 4.1General6 4.2Requirements for non load-bearing boards, including boards for general purpose use6 4.2.1Requirements for boards for use in dry conditions.6 4.2.2
11、Requirements for boards for use in humid conditions7 4.3Requirements for load-bearing boards .7 4.3.1Requirements for load-bearing boards for use in dry conditions7 4.3.2Requirements for load-bearing boards for use in humid conditions.8 4.4Requirements for light MDF boards for non load-bearing appli
12、cations, including general purpose boards9 4.4.1Requirements for boards for use in dry conditions.9 4.4.2Requirements for boards for use in humid conditions10 4.5Requirements for ultra-light MDF boards for non load-bearing applications, including general purpose boards10 4.6Requirements for boards f
13、or use in rigid underlays in roofing and walls.11 5Verification of compliance12 5.1General12 5.2External control12 5.3Factory production control.12 6Supplementary properties 12 7Marking.13 7.1Boards marketed within the European Economic Area for construction applications13 7.2Other boards 13 Annex A
14、 (normative) Boil test according to EN 1087-1 Modified procedure14 Bibliography15 Tables Table 1 Load duration category5 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 boa
15、rds 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 (type MDF.HLS)9 Table 7 Requirements for light MDF boards for use in dry conditions (type L-M
16、DF).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 Requirement
17、s 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 ? EN 622-5:2006 (E) 3 Foreword This document (EN 622-5:2006) has been prepared by Technical Committee CEN/TC 112 “ Wood based panels” , the secretariat of
18、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 January 2007, and conflicting national standards shall be withdrawn at the latest by January 2007. This document supersedes EN
19、 622-5:1997. 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. The following modification has been made: New panel types light MDF (L-MDF, L-MDF.H), ultra light MDF (UL-MDF) and boards for use in r
20、igid underlays in roofing and walls (MDF.RWH) have been included. 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, Den- mark, Estonia, Finland, F
21、rance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem- bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer- land and United Kingdom. ? EN 622-5:2006 (E) 4 1 Scope This European Standard specifies the requirements for d
22、ry 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 d
23、ocument. 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 - S
24、urface 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 hu- midity EN 319, Particleboards and fibreboards - Determinati
25、on 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
26、- 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
27、-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 - Perfor
28、mance 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 EN 13986, Wood-ba
29、sed panels for use in construction - Characteristics, evaluation of conformity and marking 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. ? EN 622-5:2006 (E) 5 ISO 3340,
30、 Fibre building boards - Determination of sand content 3 Terms and definitions For the purposes of this document, the following terms and definitions 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 corr
31、esponding to a temperature of 20 C and a relative humidity of the surrounding air only exceeding 65 % for a few weeks per year. 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 charact
32、erized 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 % only for a few weeks per year. 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
33、-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 use in a load-bearing construction, i.e. an organized assembly of connected parts designed to provide mechanical resistance and s
34、tability to the works NOTE Also referred to as “structural use“. 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 durati
35、on category Load duration class Order of accumulated duration of characteristic load Permanent More than 10 years Long-term 6 months to 10 years Medium-term 1 week to 6 months Short-term Less than one week Instantaneous NOTE 2 Examples of load-duration assignment are given in Table 2. Since climatic
36、 loads (snow, wind) vary between countries, the assignment of load-duration classes may be specified in the national Annex. ? EN 622-5:2006 (E) 6 Table 2 Examples of load-duration assignment Load duration class Examples of loading Permanent Self weight Long-term Storage Medium-term Imposed floor loa
37、d, 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 propertie
38、s 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
39、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 r
40、esults 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 moi
41、sture 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 moisture content in the material corresponding to a temperature of 20 C and a relative humidity of
42、 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 showing compliance with either one of two options: Option 1: Swelling in thickness and internal bond after cyclic te
43、st (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 external control, only the test option performed and notified by the manufacturer shall be carried out. If the
44、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. 4.2 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
45、 specifies the requirements for general purpose boards for use in dry conditions, particularly interior fitments including furniture. ? EN 622-5:2006 (E) 7 Table 3 Requirements for general purpose boards for use in dry conditions (type MDF) Ranges of nominal thickness mm Property Test method Unit 1,
46、8 to 2,5 2,5 to 4 4 to 6 6 to 9 9 to 12 12 to 19 19 to 30 30 to 45 45 Swelling in thickness 24 h EN 317 % 45 35 30 17 15 12 10 8 6 Internal bond EN 319 N/mm20,65 0,650,65 0,65 0,60 0,55 0,55 0,500,50 Bending strength EN 310 N/mm223 23 23 23 22 20 18 17 15 Modulus of elasticity in bending EN 310 N/mm
47、2 2 700 2 700 2 500 2 200 2 100 1 900 1 700 4.2.2 Requirements for boards for use in humid conditions Table 4 specifies the requirements for general purpose boards for use in humid conditions. Table 4 Requirements for general purpose boards for use in humid conditions (type MDF.H) Ranges of nominal
48、thickness mm Property Test method Unit 1,8 to 2,5 2,5 to 4 4 to 6 6 to 9 9 to 12 12 to 19 19 to 30 30 to 45 45 Swelling in thickness 24 h EN 317 % 35 30 18 12 10 8 7 7 6 Internal bond EN 319 N/mm20,700,70 0,70 0,800,80 0,75 0,75 0,70 0,60 Bending strength EN 310 N/mm227 27 27 27 26 24 22 17 15 Modul
49、us of elasticity in bending EN 310 N/mm22 700 2 700 2 700 2 700 2 500 2 400 2 300 2 200 2 000 Option 1 Swelling in thickness after cyclic testing EN 317 EN 321 % 50 40 25 19 16 15 15 15 15 Internal bond after cyclic testing EN 319 EN 321 N/mm20,350,35 0,35 0,300,25 0,20 0,15 0,10 0,10 Option 2 Internal bond after boil test a EN 319 EN 1087-1 N/mm20,200,20 0,20 0,150,15 0,12 0,12 0,