1、July 2009DEUTSCHE NORM English price group 7No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 79.060.20!$XO5“1534418www.
2、din.deDDIN EN 316Wood fibreboards Definition, classification and symbolsEnglish version of DIN EN 316:2009-07Holzfaserplatten Definition, Klassifizierung und KurzzeichenEnglische Fassung DIN EN 316:2009-07SupersedesDIN EN 316:1999-12www.beuth.deDocument comprises pages10DIN EN 316:2009-07 National f
3、oreword This standard has been prepared by Technical Committee CEN/TC 112 “Wood-based panels” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Committee), Technical Committee NA 042-02
4、-15 AA Holzwerkstoffe Spiegelausschuss zu CEN/TC 112 und ISO/TC 89. Amendments This standard difffers from DIN EN 316:1999-12 as follows: a) Subclause 3.2.3 dealing with dry process boards has been revised, deleting references to density ranges. Previous editions DIN 68753: 1976-01 DIN EN 316: 1993-
5、08, 1999-12 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 316 March 2009 ICS 79.060.20 Supersedes EN 316:1999 English Version Wood fibre boards Definition, classification and symbols Panneaux de fibres de bois Dfinition, classification et symboles Holzfaserplatten Definition, Klassifizierun
6、g und Kurzzeichen This 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 European Standard the status of a national standard without any alteration. Up-to-date lists and b
7、ibliographical 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 translationunder the responsibili
8、ty 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, I
9、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marni
10、x 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 316:2009: EEN 316:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Terms and definitions .4 3 Classification 4 3.1 General 4 3.2 Classification according to
11、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 according to application purposes .6 4
12、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 DIN EN 316:2009-07 EN 316:2009 (E) 3 Foreword This document (EN 316:2009) has been prepared by Technical Committee CEN/TC 112 “Woo
13、d-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 the latest by September 2009. Atte
14、ntion 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 to EN 316:1999, the following modi
15、fication 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 Standard: Austria, Belgium, Bulgaria
16、, 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. DIN EN 316:2009-07 EN 316:2009
17、(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 of 1,5 mm or greater, manufact
18、ured 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 adhesive added to the fibres. O
19、ther 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 are essentially produced under
20、 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. In this standard, a combine
21、d 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; DIN EN 316:2009-07 EN 316:2009 (E)
22、 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 to their density, as foll
23、ows: 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 addition of a synthetic ad
24、hesive 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 (MBL, 400 kg/m3to 560 kg/
25、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 as well as enhanced stre
26、ngth 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 by changing the composi
27、tion 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 according to additional pro
28、perties 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, the applications and t
29、he 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 Classification criteria for fibreb
30、oards related to conditions of use Conditions of use Dry conditions Humid conditions Exterior conditions DIN EN 316:2009-07 EN 316:2009 (E) 6 3.3.3 Classification according to application purposes Table 2 shows the classification criteria for fibreboards related to application purposes. Table 2 Clas
31、sification 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 Table 3 specifies t
32、he 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 to conditions of use
33、 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 conditions Humid condi
34、tions 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 the digits 1 or 2 af
35、ter the symbol. The digit 1 is used for load-bearing boards and the digit 2 for heavy duty load-bearing boards. DIN EN 316:2009-07 EN 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 type after a ful
36、l 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 humid conditions
37、for instantaneous or short-term load duration only. 1)Where applicable. DIN EN 316:2009-07 EN 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 Specifications 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) DIN EN 316:2009-07
