1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 312:2010Particleboards SpecificationsBS EN 312:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 312:2010. Itsupersedes BS EN 312:2
2、003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/541, Wood based panels.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a c
3、ontract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 67603 1ICS 79.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2
4、010.Amendments issued since publicationDate Text affectedBS EN 312:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 312 September 2010 ICS 79.060.20 Supersedes EN 312:2003English Version Particleboards - Specifications Panneaux de particules - Exigences Spanplatten - Anforderungen This Europ
5、ean Standard was approved by CEN on 23 July 2010. 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 bibliographical references conce
6、rning 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 translation under the responsibility of a CEN member into its ow
7、n 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvi
8、a, 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 Marnix 17, B-1000 Brussel
9、s 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 312:2010: EBS EN 312:2010EN 312:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .54 Classifications 55 General requirements for all
10、board types .66 Requirement values .77 Requirements for general purpose boards for use in dry conditions (Type P1) 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
11、 P3) 99.1 General 99.2 Mechanical and swelling properties 99.3 Moisture resistance .910 Requirements for load-bearing 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
12、. 1111.3 Moisture resistance 1112 Requirements for heavy duty load-bearing boards for use in dry conditions (Type 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 14
13、14 Supplementary properties . 1415 Verification of compliance . 1515.1 General . 1515.2 External control . 1515.3 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 colo
14、ur coding system for particleboards 17Bibliography . 18BS EN 312:2010EN 312:2010 (E) 3 Foreword This document (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
15、 standard, either by publication of an identical text or by endorsement, at the latest by March 2011, and conflicting 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 right
16、s. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document 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 elas
17、ticity and thickness swelling modified. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Ge
18、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 312:2010EN 312:2010 (E) 4 1 Scope This European Standard specifies the requirements for
19、flat-pressed or calendar-pressed unfaced particleboards as defined in EN 309. NOTE 1 This standard is called 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 prod
20、uct properties, but they are not characteristic values to be used in design calculations. NOTE 2 Such characteristic 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 su
21、pplementary properties for certain applications is also given. NOTE 3 Particleboards in accordance with 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,
22、roofing and I-beams (see EN 1995-1-1 and/or performance standards). This standard does not apply to extruded 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
23、 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 120, Wood based panels Determination of formaldehyde content Extraction method called the perforator method EN 309:2005,
24、Particleboards Definition and classification EN 310, Wood-based 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 wa
25、ter EN 318, Wood based panels Determination of dimensional changes associated with changes in relative humidity 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
26、 test conditions EN 322, Wood-based panels Determination of moisture content EN 323, Wood-based panels Determination of density EN 324-1, Wood-based panels Determination of dimensions of boards Part 1: Determination of thickness, width and length BS EN 312:2010EN 312:2010 (E) 5 EN 324-2, Wood-based
27、panels Determination of dimensions of boards Part 2: Determination of squareness and edge straightness 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
28、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 717-1, Wood-based panels Determination of formaldehyde release Part 1: Formaldehyde emission by the chamber method EN 1087-1, Particleboards Determin
29、ation of moisture 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 13986:2004, Wood-based panels for use in construction Characteristics, evaluation of conformity and marking ISO 3340, F
30、ibre 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 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 characte
31、rised 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 3.2 humid conditions conditions corresponding to service class 2 of EN 1995-1-1:2004 which is characterised by a moisture con
32、tent 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 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 orga
33、nized assembly of connected parts designed to provide mechanical resistance and stability to the works NOTE Also referred to as “structural use“. 4 Classifications Seven types of boards are classified and are distinguished as follows: BS EN 312:2010EN 312:2010 (E) 6 P1 General purpose boards for use
34、 in dry conditions; P2 Boards for interior fitments (including furniture) for use in dry conditions; 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
35、 in dry conditions; P7 Heavy duty load-bearing boards for use in humid conditions. 5 General requirements 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 performanc
36、e standard EN 12871), special tolerances are required for the dimensional properties listed under 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. BS EN 312:2010EN 312:2
37、010 (E) 7 Table 1 General requirements at dispatch No Property Test method Requirement 1a 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 E
38、N 324-2 1,5 mm per m 3aSquareness tolerance EN 324-2 2 mm per m 4 Moisture content EN 322 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 b
39、oarddRelease 0,124 mg/m3air Class E 2 Perforator value Formaldehyde releasecEN 120 EN 717-1 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 humid
40、ity of 65 % and a temperature of 20 C. bThe perforator values apply to boards with moisture 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 followi
41、ng equation: F = 0,133 H + 1,86 cRequired for initial type testing other than for established 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
42、that to ensure compliance with these limits, the rolling average of the EN 120 values found 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 v
43、alues The requirements in Tables 2 to 11 shall be met by 5 percentile values (95 percentile 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 v
44、alues in Tables 2 to 11 and in the case of all other properties they shall be equal to or 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 pane
45、l. BS EN 312:2010EN 312:2010 (E) 8 NOTE The manufacturer may test the panel in only 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 re
46、quirements given in Tables 1 and 2. Table 2 General purpose boards for use in dry conditions (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
47、 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 a relative humidity of 65 % and a temperature of 20 C. 8 Requirements for boards for interior fitments (including furn
48、iture) for use in dry conditions (Type P2) Boards of this type shall comply with the requirements given in Tables 1 and 3. Table 3 Boards for interior fitments (including furniture) for use in dry conditions (Type P2) Requirements for specified mechanical properties Property Test method Unit Require
49、ment Thickness range (mm, nominal) 4 to 6 6 to 13 13 to 20 20 to 25 25 to 32 32 to 40 40 Bending strength EN 310 N/mm213 13 12 11 11 10,5 9,5 8,5 7 Modulus of elasticity in bending EN 310 N/mm21 800 1 800 1 950 1 800 1 600 1 500 1 350 1 200 1 050Internal bond EN 319 N/mm20,45 0,45 0,45 0,40 0,35 0,30 0,25 0,20 0,20 Surface soundness EN 311 N/mm20,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 0,8 NOTE The values
