1、 Reference numberISO 27769-2:2009(E)ISO 2009INTERNATIONAL STANDARD ISO27769-2First edition2009-08-01Wood-based panels Wet-process fibreboard Part 2: Requirements Panneaux base de bois Panneau de fibres obtenu par procd humide Partie 2: Spcifications ISO 27769-2:2009(E) PDF disclaimer This PDF file m
2、ay contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the res
3、ponsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creat
4、ion parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 200
5、9 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the coun
6、try of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedISO 27769-2:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv 1 Sc
7、ope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Expression of specification limits and general requirements . 2 4.1 Expression of specification limits. 2 4.2 Lower specification limits 2 4.3 Upper specification limits 2 4.4 Density variation, dimension and moisture content requiremen
8、ts . 3 5 Requirements for softboards 3 5.1 Requirements for general purpose softboard for use in dry conditions 3 5.2 Requirements for general purpose softboard for use in humid conditions. 4 5.3 Requirements for general purpose softboard for use in high-humidity conditions 4 5.4 Requirements for ge
9、neral purpose softboard for use in exterior conditions 4 5.5 Requirements for load-bearing softboard for use in dry conditions 5 5.6 Requirements for load-bearing softboard for use in humid conditions . 5 6 Requirements for hardboards . 5 6.1 Requirements for general purpose hardboard for use in dry
10、 conditions. 5 6.2 Requirements for general purpose hardboard for use in humid conditions . 6 6.3 Requirements for general purpose hardboard for use in high-humidity conditions 6 6.4 Requirements for general purpose hardboard for use in exterior conditions . 7 6.5 Requirements for load-bearing hardb
11、oard for use in dry conditions . 7 6.6 Requirements for load-bearing hardboard for use in humid conditions 8 Annex A (normative) Calculation of 5-percentile and 95-percentile values. 9 Bibliography . 11 ISO 27769-2:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization f
12、or Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has th
13、e right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Internat
14、ional Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication
15、 as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
16、 ISO 27769-2 was prepared by Technical Committee ISO/TC 89, Wood-based panels, Subcommittee SC 1, Fibre boards. ISO 27769 consists of the following parts, under the general title Wood-based panels Wet-process fibreboard: Part 1: Classifications Part 2: Requirements INTERNATIONAL STANDARD ISO 27769-2
17、:2009(E) ISO 2009 All rights reserved 1Wood-based panels Wet-process fibreboard Part 2: Requirements 1 Scope This part of ISO 27769 specifies the manufacturing property requirements for wet-process fibreboard. NOTE The values listed in this part of ISO 27769 relate to product properties used to clas
18、sify fibreboards into one of the different types. The values are not characteristic values to be used for design purposes. When fibreboard is classified as load-bearing and nominated for structural applications, characteristic strength and stiffness values are established based upon testing in accor
19、dance with ISO 16572 or equivalent ASTM or EN Standards. Alternatively, for specific load-bearing applications (e.g. walls, roofs, floors and I-joist webs), the load-bearing fibreboard would meet the specific performance requirements for that intended application. 2 Normative references The followin
20、g referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9426, Wood-based panels Determination of dimensions of pa
21、nels ISO 9427, Wood-based panels Determination of density ISO 16978, Wood-based panels Determination of modulus of elasticity in bending and of bending strength ISO 16979, Wood-based panels Determination of moisture content ISO 16983, Wood-based panels Determination of swelling in thickness after im
22、mersion in water ISO 16984, Wood-based panels Determination of tensile strength perpendicular to the plane of the panel ISO 16998, Wood-based panels Determination of moisture resistance Boil test ISO 17064, Wood-based panels Fibreboard, particleboard and oriented strand board (OSB) Vocabulary ISO 20
23、585, Wood-based panels Determination of wet bending strength after immersion in water at 70 C or 100 C (boiling temperature) ISO 27769-1:1), Wood-based panels Wet-process fibreboard Part 1: Classifications 1) To be published. ISO 27769-2:2009(E) 2 ISO 2009 All rights reserved3 Terms and definitions
24、For the purposes of this document, the terms and definitions given in ISO 17064 and ISO 27769-1 apply. 4 Expression of specification limits and general requirements 4.1 Expression of specification limits This part of ISO 27769 may be used to evaluate groups of panels or production batches. To evalua
25、te a group of panels in accordance with this part of ISO 27769 the following shall be required. a) The mandatory tests of ISO 27769-1:, Tables 3 and 4 shall be carried out on samples of the group. The test specimens shall be conditioned as specified in each test method. b) The results of the tests s
26、hall be evaluated against the appropriate specification limits given in Tables 1 to 13, according to the grade and thickness range of the panels. Table 1 applies to all classes and thickness ranges of panels. For density variation and dimensions (see Table 1), the specification limits are based on t
27、he mean values for individual panels (calculated in accordance with Annex A) and are the maximum tolerances for density variation and dimensions. The specification limits given in Tables 2 to 13 are based on 5 (lower) or 95 (upper) percentile expressions, according to 4.2 and 4.3. NOTE This part of
28、ISO 27769 cannot be used to properly evaluate single panels, but can be used as an approximation. The upper or lower specification limits can be taken as maximum or minimum values. 4.2 Lower specification limits The requirements in Tables 2 to 13 are the lower specification limits for the following
29、properties: a) bending strength/modulus of rupture (MOR); b) modulus of elasticity (MOE); c) internal bond; d) internal bond after boil test; e) wet bending strength (MOR) after immersion in water. The 5-percentile values based on the mean values for individual panels and calculated in accordance wi
30、th Annex A shall be equal to or greater than the lower specification limits in Tables 2 to 13. 4.3 Upper specification limits The requirements in Tables 2 to 13 are the upper specification limits for the following properties: a) thickness swelling after 2 h ( softboards); b) thickness swelling after
31、 24 h (hardboards). The 95-percentile values based on the mean values for individual panels and calculated in accordance with Annex A shall be equal to or less than the upper specification limits in Tables 2 to 13. ISO 27769-2:2009(E) ISO 2009 All rights reserved 34.4 Density variation, dimension an
32、d moisture content requirements At least 95 % of the mean values of the individual panels shall be within the maximum tolerances stated in Table 1. Table 1 Requirements for density variation, dimensions and moisture content Tolerance on nominal dimensions Test method Requirement Density variation wi
33、thin panel ISO 9427 10 % max from mean Length and width ISO 9426 2 mm/m, max 5 mm Squareness ISO 9426 u 2 mm/m Thickness ISO 9426 Thickness range, nominal (mm) Softboard u 10 10 to 19 19 Unsanded board 1,0 1,2 1,8 Hardboard u 3,5 3,5 to 5,5 5,5 Unsanded board 0,4 0,5 0,7 Sanded board 0,3 0,3 0,3 Dec
34、orative board 0,6 0,6 0,6 Moisture content (advisory only) ISO 16979 4 % to 13 % 5 Requirements for softboards 5.1 Requirements for general purpose softboard for use in dry conditions Requirements for SB-GP REG (regular general purpose softboard) are listed in Table 2. Table 2 Requirements for SB-GP
35、 REG Dimensions in millimetres Requirement Thickness range nominal Property Test method Unit u 10 10 to 19 19 to 36 36 Bending strength (MOR) ISO 16978 MPa 0,9 0,8 0,7 0,7 Thickness swelling after 2 h ISO 16983 % 10 10 10 10 ISO 27769-2:2009(E) 4 ISO 2009 All rights reserved5.2 Requirements for gene
36、ral purpose softboard for use in humid conditions The requirements for SB-GP MR (moisture resistant general purpose softboard) are given in Table 3. Table 3 Requirements for SB-GP MR Dimensions in millimetres Requirement Thickness range nominal Property Test method Unit u 10 10 to 19 19 to 36 36 Ben
37、ding strength (MOR) ISO 16978 MPa 1,1 1,0 0,8 0,8 Thickness swelling after 2 h ISO 16983 % 8 8 8 8 5.3 Requirements for general purpose softboard for use in high-humidity conditions The requirements for SB-GP HMR (high moisture resistant general purpose softboard) are given in Table 4. Table 4 Requi
38、rements for SB-GP HMR Dimensions in millimetres Requirement Thickness range nominal Property Test method Unit u 10 10 to 19 19 to 36 36 Bending strength (MOR) ISO 16978 MPa 1,2 1,1 0,9 0,8 Thickness swelling after 2 h ISO 16983 % 7 7 7 7 5.4 Requirements for general purpose softboard for use in exte
39、rior conditions The requirements for SB-GP EXT (exterior general purpose softboard) are given in Table 5. Table 5 Requirements for SB-GP EXT Dimensions in millimetres Requirement Thickness range nominal Property Test method Unit u 10 10 to 19 19 to 36 36 Bending strength (MOR) ISO 16978 MPa 1,3 1,2
40、1,0 0,8 Thickness swelling after 2 h ISO 16983 % 6 6 6 6 ISO 27769-2:2009(E) ISO 2009 All rights reserved 55.5 Requirements for load-bearing softboard for use in dry conditions The requirements for SB-LB REG (regular load-bearing softboard) used for instantaneous or short-term load duration only are
41、 given in Table 6. Table 6 Requirements for SB-LB REG Dimensions in millimetres Requirement Thickness range nominal Property Test method Unit u 10 10 to 19 19 to 36 36 Bending strength (MOR) ISO 16978 MPa 1,2 1,1 1,0 0,8 Modulus of elasticity (MOE) ISO 16978 MPa 150 140 120 100 Thickness swelling af
42、ter 2 h ISO 16983 % 8 8 8 8 5.6 Requirements for load-bearing softboard for use in humid conditions The requirements for SB-LB MR (moisture resistant load-bearing softboard) used for instantaneous or short-term load duration only are given in Table 7. Table 7 Requirements for SB-LB MR Dimensions in
43、millimetres Requirement Thickness range nominal Property Test method Unit u 10 10 to 19 19 to 36 36 Bending strength (MOR) ISO 16978 MPa 1,3 1,2 1,1 0,9 Modulus of elasticity (MOE) ISO 16978 MPa 180 170 150 120 Thickness swelling after 2 h ISO 16983 % 6 6 6 6 6 Requirements for hardboards 6.1 Requir
44、ements for general purpose hardboard for use in dry conditions The requirements for HB-GP REG (regular general purpose hardboard) are given in Table 8. Table 8 Requirements for HB-GP REG Dimensions in millimetres Requirement Thickness range nominal Property Test method Unit u 3,5 3,5 to 5,5 5,5 Bend
45、ing strength (MOR) ISO 16978 MPa 28 28 25 Internal bond ISO 16984 MPa 0,45 0,45 0,45 Thickness swelling after 24 h ISO 16983 % 35 30 25 ISO 27769-2:2009(E) 6 ISO 2009 All rights reserved6.2 Requirements for general purpose hardboard for use in humid conditions The requirements for HB-GP MR (moisture
46、 resistant general purpose hardboard) are given in Table 9. Table 9 Requirements for HB-GP MR Dimensions in millimetres Requirement Thickness range nominal Property Test method Unit u 3,5 3,5 to 5,5 5,5 Bending strength (MOR) ISO 16978 MPa 32 32 30 Internal bond ISO 16984 MPa 0,55 0,55 0,50 Thicknes
47、s swelling after 24 h ISO 16983 % 22 18 15 Moisture resistance Option 1: Internal bond strength after boil test ISO 16998 MPa 0,25 0,25 0,25 6.3 Requirements for general purpose hardboard for use in high-humidity conditions The requirements for HB-GP HMR (high moisture resistant general purpose hard
48、board) are given in Table 10. Table 10 Requirements for HB-GP HMR Dimensions in millimetres Requirement Thickness range nominal Property Test method Unit u 3,5 3,5 to 5,5 5,5 Bending strength (MOR) ISO 16978 MPa 32 32 30 Modulus of elasticity (MOE) ISO 16978 MPa 2 500 2 500 2 300 Internal bond ISO 1
49、6984 MPa 0,60 0,60 0,50 Thickness swelling after 24 h ISO 16983 % 17 15 12 Moisture resistance Option 1: Internal bond strength after boil test ISO 16998 MPa 0,30 0,30 0,30 ISO 27769-2:2009(E) ISO 2009 All rights reserved 76.4 Requirements for general purpose hardboard for use in exterior conditions The requirements for HB-GP EXT (exterior general purpose hardboard) are given in Table 11. Table 11 Requirements for HB-GP EXT Dimensions in
