1、BS EN 316:2009ICS 01.040.79; 79.060.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDWood fibre boards Definition,classification andsymbolsThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 28 February2010. BSI
2、 2010ISBN 978 0 580 62905 1Amendments/corrigenda issued since publicationDate CommentsBS EN 316:2009National forewordThis British Standard is the UK implementation of EN 316:2009. Itsupersedes BS EN 316:1999 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommitt
3、ee 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 Standard ca
4、nnot confer immunityfrom legal obligations.BS EN 316:2009EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 316March 2009ICS 79.060.20 Supersedes EN 316:1999 English VersionWood fibre boards - Definition, classification and symbolsPanneaux de fibres de bois - Dfinition, classification etsymbolesHolzf
5、aserplatten - Definition, Klassifizierung undKurzzeichenThis European Standard was approved by CEN on 11 January 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without an
6、y alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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
7、 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germ
8、any, 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 STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGMana
9、gement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 316:2009: EBS EN 316:2009EN 316:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Terms and definitions .4 3 Classification 4 3.1 Gen
10、eral 4 3.2 Classification according to production process 4 3.2.1 General 4 3.2.2 Wet process boards 5 3.2.3 Dry process boards (MDF) 5 3.3 Classification according to additional properties and applications 5 3.3.1 General 5 3.3.2 Classification according to conditions of use 5 3.3.3 Classification
11、according to application purposes .6 4 Symbols 6 4.1 Symbols for different fibreboards types .6 4.2 Symbols related to conditions of use and application purpose .6 4.3 Composition of symbols .7 Bibliography 8 BS EN 316:2009EN 316:2009 (E) 3 Foreword This document (EN 316:2009) has been prepared by T
12、echnical 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, September 2009, and conflicting national standards shall be withdrawn at
13、the latest by September 2009. 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 European standard supersedes EN 316:1999. Compared
14、to EN 316:1999, the following modification has been made: a) 3.2.3 on dry process boards has been revised, deleting references to density ranges. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European St
15、andard: 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 Kingdo
16、m. BS EN 316:2009EN 316:2009 (E) 4 1 Scope This European Standard gives the definition, classification and symbols for wood fibreboards. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 wood fibreboard panel material with a nominal thickness o
17、f 1,5 mm or greater, manufactured from lignocellulosic fibres with application of heat and/or pressure NOTE 1 Wood fibreboards are subsequently referred to as fibreboards. NOTE 2 The bond is derived: either from the felting of the fibres and their inherent adhesive properties; or from a synthetic ad
18、hesive added to the fibres. Other additives can be included. 2.2 wet process board fibreboard having a fibre moisture content of more than 20 % at the stage of forming 2.3 dry process board fibreboard having a fibre moisture content of less than 20 % at the stage of forming NOTE Dry process boards a
19、re essentially produced under heat and pressure with the addition of a synthetic adhesive 3 Classification 3.1 General Fibreboards can be classified according to different criteria, e.g. related to production process, thickness, density, specific properties, conditions of use or application purposes
20、. In this standard, a combined system of criteria is used for the classification of fibreboards, starting with the production process. 3.2 Classification according to production process 3.2.1 General Fibreboards are classified by their production process as follows: 1) wet process fibreboards; BS EN
21、 316:2009EN 316:2009 (E) 5 2) dry process fibreboards. NOTE The word “fibre“ is mostly omitted from the denominations defined above. Hence, reference is made to “wet process boards“ (e.g. hardboard) or “dry process boards“ (MDF). 3.2.2 Wet process boards Wet process boards are classified according t
22、o their density, as follows: 1) hardboards (HB, density 900 kg/m3): they can be given additional properties, e.g. fire retardancy, moisture resistance, resistance against biological attack, workability (e.g. mouldability), either by specific treatment (e.g. “tempering“, “oil tempering“) or by the ad
23、dition of a synthetic adhesive or other additives; 2) medium boards (MB, density 400 kg/m3to 900 kg/m3): they can be given additional properties, e.g. fire retardancy, moisture resistance; NOTE Medium boards are divided into two sub-categories, according to their density: low density medium boards (
24、MBL, 400 kg/m3to 560 kg/m3); high density medium boards (MBH, 560 kg/m3to 900 kg/m3). 3) softboards (SB, density 230 kg/m3to 400 kg/m3): these boards have basic properties of thermal and acoustic insulation. They can be given additional properties, e.g. fire retardancy. Improved moisture resistance
25、as well as enhanced strength properties are usually achieved by the addition of a petrochemical substance (e.g. bitumen). 3.2.3 Dry process boards (MDF) Dry process fibreboards can be given additional properties, e.g. fire retardancy, moisture resistance, resistance against biological attack, either
26、 by changing the composition of the synthetic adhesive or by the inclusion of other additives. NOTE Within the class dry process boards, there are a number of board types on the market. EN 622-5 5 defines such boards by technical class and a set of performance characteristics. 3.3 Classification acc
27、ording to additional properties and applications 3.3.1 General Each of the fibreboard types defined in 3.2.2 and 3.2.3 is furthermore classified according to a set of criteria related to specific conditions of use and different application purposes. NOTE Detailed information on the conditions of use
28、, the applications and the corresponding requirements can be found in the specification standards for fibreboards listed in the Bibliography. 3.3.2 Classification according to conditions of use Table 1 shows the classification criteria for fibreboards related to conditions of use. Table 1 Classifica
29、tion criteria for fibreboards related to conditions of use Conditions of use Dry conditions Humid conditions Exterior conditions BS EN 316:2009EN 316:2009 (E) 6 3.3.3 Classification according to application purposes Table 2 shows the classification criteria for fibreboards related to application pur
30、poses. Table 2 Classification criteria for fibreboards related to application purposes Application purposes General purpose use Load-bearing applications: 1) for all load duration categories 2) for instantaneous or short-term load durations only 4 Symbols 4.1 Symbols for different fibreboards types
31、Table 3 specifies the symbols which shall be used for the fibreboard types defined by this standard. Table 3 Symbols for different fibreboards types Fibreboard type Symbol Hardboard Low density medium board High density medium board Softboard Dry process board HB MBL MBH SB MDF 4.2 Symbols related t
32、o conditions of use and application purpose Table 4 specifies the symbols which shall be used to indicate the conditions of use and application purposes. Table 4 Symbols related to conditions of use and application purposes Conditions of use and application purposes Symbol Conditions of use: Dry con
33、ditions Humid conditions Exterior conditions no symbol H E Application purposes: General purpose use Load-bearing applications: a) for all load duration categories b) for instantaneous or short-term durations only no symbol L A S Different load-bearing categories of boards are identified by adding t
34、he digits 1 or 2 after the symbol. The digit 1 is used for load-bearing boards and the digit 2 for heavy duty load-bearing boards. BS EN 316:2009EN 316:2009 (E) 7 4.3 Composition of symbols The symbols indicating conditions of use and application purposes are added to the symbol of the fibreboard ty
35、pe after a full stop, in this sequence: fibreboard type . condition of use + application purpose + load duration category1)+ load-bearing category1)EXAMPLE HB.HLA 2 heavy duty load bearing hardboard for use in humid conditions for all load duration categories; MDF.HLS load-bearing MDF for use in hum
36、id conditions for instantaneous or short-term load duration only. 1)Where applicable. BS EN 316:2009EN 316:2009 (E) 8 Bibliography 1 EN 622-1, Fibreboards Specifications Part 1: General requirements 2 EN 622-2, Fibreboards Specifications Part 2: Requirements for hardboards 3 EN 622-3, Fibreboards Sp
37、ecifications Part 3: Requirements for medium boards 4 EN 622-4, Fibreboards Specifications Part 4: Requirements for softboards 5 EN 622-5, Fibreboards Specifications Part 5: Requirements for dry process boards (MDF) BS EN 316:2009This page has been intentionally left blank BS EN 316:2009BSI GroupHea
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