1、December 2010 Translation by DIN-Sprachendienst.English price group 12No part of this translation 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).I
2、CS 79.060.20!$lhW“1736952www.din.deDDIN EN 312Particleboards SpecificationsEnglish translation of DIN EN 312:2010-12Spanplatten AnforderungenEnglische bersetzung von DIN EN 312:2010-12Panneaux de particules ExigencesTraduction anglaise de DIN EN 312:2010-12SupersedesDIN EN 312:2003-11www.beuth.deDoc
3、ument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.2011.10 DIN EN 312:2010-12 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 112 “Wood-based panels” (Secretariat: DIN, Germany),
4、 Working Group WG 11 “Particleboards and fibreboards”. The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Committee), Working Committee 042-02-15 AA Spiegelausschuss zu CEN/TC 112 und ISO/TC 89 Holzwerkstoffe. It sh
5、ould be noted that in Germany, the Chemikalienverbotsverordnung ChemVerbotsV (Chemicals Prohibition Ordinance) governs the permissible formaldehyde emissions. Amendments This standard differs from DIN EN 312:2003-11 as follows: a) new thickness ranges have been included; b) certain values for bendin
6、g strength, modulus of elasticity and thickness swelling have been modified. Previous editions DIN EN 312-1: 1996-11 DIN EN 312-2: 1996-11 DIN EN 312-3: 1996-11 DIN EN 312-4: 1996-11 DIN EN 312-5: 1997-06 DIN EN 312-6: 1996-11 DIN EN 312-7: 1997-06 DIN EN 312: 2003-11 2 EUROPEAN STANDARD NORME EUROP
7、ENNE EUROPISCHE NORM EN 312 September 2010 ICS 79.060.20 Supersedes EN 312:2003English Version Particleboards - Specifications Panneaux de particules - Exigences Spanplatten - Anforderungen This European Standard was approved by CEN on 23 July 2010. CEN members are bound to comply with the CEN/CENEL
8、EC 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
9、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. C
10、EN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
11、 Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nation
12、al Members. Ref. No. EN 312:2010: EEN 312:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .54 Classifications 55 General requirements for all board types .66 Requirement values .77 Requirements for general purpose boards for use in dry conditions (Type P1)
13、 88 Requirements for boards for interior fitments (including furniture) for use in dry conditions (Type P2) .89 Requirements for non load-bearing boards for use in humid conditions (Type P3) 99.1 General 99.2 Mechanical and swelling properties 99.3 Moisture resistance .910 Requirements for load-bear
14、ing boards for use in dry conditions (Type P4) 1011 Requirements for load-bearing boards for use in humid conditions (Type P5) 1011.1 General . 1011.2 Mechanical and swelling properties . 1111.3 Moisture resistance 1112 Requirements for heavy duty load-bearing boards for use in dry conditions (Type
15、P6) 1213 Requirements for heavy duty load-bearing boards for use in humid conditions (Type P7). 1313.1 General . 1313.2 Mechanical and swelling properties . 1313.3 Moisture resistance 1414 Supplementary properties . 1415 Verification of compliance . 1515.1 General . 1515.2 External control . 1515.3
16、Factory production control 1516 Marking 1616.1 Boards marketed within the European Economic Area for construction applications. 1616.2 Other Boards . 16Annex A (normative) Voluntary colour coding system for particleboards 17Bibliography . 18DIN EN 312:2010-12 EN 312:2010 (E) 3 Foreword This document
17、 (EN 312:2010) 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 March 2011, and con
18、flicting national standards shall be withdrawn at the latest by March 2011. 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 docum
19、ent supersedes EN 312:2003. Compared to EN 312:2003, the following main modifications have been made: a) New thickness ranges included; b) Certain values for bending strength, modulus of elasticity and thickness swelling modified. According to the CEN/CENELEC Internal Regulations, the national stand
20、ards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, P
21、oland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 312:2010-12 EN 312:2010 (E) 4 1 Scope This European Standard specifies the requirements for flat-pressed or calendar-pressed unfaced particleboards as defined in EN 309. NOTE 1 This standard is ca
22、lled up in EN 13986 for construction applications. Products specified in this standard are referred to in EN 13986 as resin-bonded particleboards. The values listed in this standard relate to product properties, but they are not characteristic values to be used in design calculations. NOTE 2 Such ch
23、aracteristic values (e.g. for use in design calculation in EN 1995-1-1) are given either in EN 12369-1 or derived by testing according to EN 789, EN 1058 and ENV 1156. Additional information on supplementary properties for certain applications is also given. NOTE 3 Particleboards in accordance with
24、this standard may be referred to as P1 to P7-boards. Boards of type P4 to P7 are intended for use in design and construction of load-bearing or stiffening building elements, e.g. walls, flooring, roofing and I-beams (see EN 1995-1-1 and/or performance standards). This standard does not apply to extr
25、uded particleboards and flaxboards, which are standardised in EN 14755 and EN 15197 respectively. 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
26、 edition of the referenced document (including any amendments) applies. EN 120, Wood based panels Determination of formaldehyde content Extraction method called the perforator method EN 309:2005, Particleboards Definition and classification EN 310, Wood-based panels Determination of modulus of elast
27、icity 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 h
28、umidity EN 319, Particleboards and fibreboards Determination of tensile strength perpendicular to the plane of the board EN 321, Wood-based panels Determination of moisture resistance under cyclic test conditions EN 322, Wood-based panels Determination of moisture content EN 323, Wood-based panels D
29、etermination of density EN 324-1, Wood-based panels Determination of dimensions of boards Part 1: Determination of thickness, width and length DIN EN 312:2010-12 EN 312:2010 (E) 5 EN 324-2, Wood-based panels Determination of dimensions of boards Part 2: Determination of squareness and edge straightn
30、ess 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
31、 Part 3: Inspection of an isolated lot of panels EN 717-1, Wood-based panels Determination of formaldehyde release Part 1: Formaldehyde emission by the chamber method EN 1087-1, Particleboards Determination of moisture resistance Part 1: Boil test EN 12871, Wood-based panels Performance specificatio
32、ns and requirements for load bearing boards for use in floors, walls and roofs 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
33、 document, the terms and definitions given in EN 13986:2004 and EN 309:2005 and the following apply. 3.1 dry conditions conditions corresponding to service class 1 of EN 1995-1-1:2004 which is characterised by a moisture content in the material corresponding to a temperature of 20 C and a relative h
34、umidity of the surrounding air only exceeding 65 % for a few weeks per year 3.2 humid conditions conditions corresponding to service class 2 of EN 1995-1-1:2004 which is characterised by a moisture content in the material corresponding to a temperature of 20 C and a relative humidity of the surround
35、ing air only exceeding 85 % for a few weeks per year 3.3 general purpose all non-load bearing applications, e.g. furniture and fitments 3.4 load-bearing use in a load-bearing construction, i.e. an organized assembly of connected parts designed to provide mechanical resistance and stability to the wo
36、rks NOTE Also referred to as “structural use“. 4 Classifications Seven types of boards are classified and are distinguished as follows: DIN EN 312:2010-12 EN 312:2010 (E) 6 P1 General purpose boards for use in dry conditions; P2 Boards for interior fitments (including furniture) for use in dry condi
37、tions; P3 Non load-bearing boards for use in humid conditions; P4 Load-bearing boards for use in dry conditions; P5 Load-bearing boards for use in humid conditions; P6 Heavy duty load-bearing boards for use in dry conditions; P7 Heavy duty load-bearing boards for use in humid conditions. 5 General r
38、equirements for all board types Particleboards shall comply with the general requirements as listed in Table 1 when dispatched from the production factory. For certain uses of particleboards (see performance standard EN 12871), special tolerances are required for the dimensional properties listed un
39、der No. 1. In the case of dispatch in cut sizes, or of further machined boards (tongued and grooved, and similar), special tolerances for properties No. 1, 2 and 3 may be agreed upon. DIN EN 312:2010-12 EN 312:2010 (E) 7 Table 1 General requirements at dispatch No Property Test method Requirement 1a
40、 Tolerances on nominal dimensions Thickness (sanded) within and between boards Thickness (unsanded) within and between boards Length and width EN 324-1 0,3 mm 0,3 mm + 1,7 mm 5 mm 2aEdge straightness tolerance EN 324-2 1,5 mm per m 3aSquareness tolerance EN 324-2 2 mm per m 4 Moisture content EN 322
41、 5 % to 13 % 5aTolerance on the mean density within a board EN 323 10 % 6b Formaldehyde release according to EN 13986 Class E 1 Perforator value Formaldehyde releasecEN 120 EN 717-1 Content 8 mg/100 g oven dry boarddRelease 0,124 mg/m3air Class E 2 Perforator value Formaldehyde releasecEN 120 EN 717
42、-1 Content 8 mg/100 g oven dry board and 20 mg/100 g oven dry board Release 0,124 mg/m3air and 0,3 mg/m air aThese values are characterized by a moisture content in the material corresponding to a relative humidity of 65 % and a temperature of 20 C. bThe perforator values apply to boards with moistu
43、re contents H of 6,5 %. In the case of particleboards with different moisture content (in the range of 3 % H 10 %), the perforator value shall be multiplied by a factor F which can be calculated from the following equation: F = 0,133 H + 1,86 cRequired for initial type testing other than for establi
44、shed products where initial type testing may also be done on the basis of existing data with EN 120 or EN 717-1 testing, either from factory production control or from external inspection. dExperience has shown that to ensure compliance with these limits, the rolling average of the EN 120 values fou
45、nd from the internal factory production control over a period of year should not exceed 6,5 mg HCHO/100 g panel mass. NOTE In certain countries only products of formaldehyde class E1 are allowed. 6 Requirement values The requirements in Tables 2 to 11 shall be met by 5 percentile values (95 percenti
46、le values in the case of thickness swelling) based on the mean values for individual boards and calculated in accordance with EN 326-1. In the case of thickness swelling they shall be equal to or less than the values in Tables 2 to 11 and in the case of all other properties they shall be equal to or
47、 greater than the values in Tables 2 to 11. The values in Tables 2 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. DIN EN 312:2010-12 EN 312:2010 (E) 8 NOTE The manufacturer may test the panel in only
48、the main direction if this direction is clearly indicated on the machined ready to use panel. 7 Requirements for general purpose boards for use in dry conditions (Type P1) Boards of this type shall comply with the requirements given in Tables 1 and 2. Table 2 General purpose boards for use in dry co
49、nditions (Type P1) Requirements for specified mechanical properties Property Test method Unit Requirement Thickness range (mm, nominal) 6 to 13 13 to 20 20 to 25 25 to 32 32 to 40 40 Bending strength EN 310 N/mm211,5 11,5 10,5 10 10 8,5 7 5,5 Internal bond EN 319 N/mm20,31 0,31 0,28 0,24 0,20 0,17 0,14 0,14 NOTE The values are characterised by a moisture content in the material corresponding to
