1、DD CEN/TS13307-2:2009ICS 79.080NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWDRAFT FOR DEVELOPMENTLaminated and fingerjointed timber blanksand semi-finishedprofiles for non-structural usesPart 2: Production controlThis Draft for Developmentwas published under theauthority of
2、the StandardsPolicy and StrategyCommittee on 31 March2010 BSI 2010ISBN 978 0 580 67152 4Amendments/corrigenda issued since publicationDate CommentsDD CEN/TS 13307-2:2009National forewordThis Draft for Development is the UK implementation of CEN/TS13307-2:2009.This publication is not to be regarded a
3、s a British Standard.It is being issued in the Draft for Development series of publications andis of a provisional nature. It should be applied on this provisional basis,so that information and experience of its practical application can beobtained.Comments arising from the use of this Draft for Dev
4、elopment arerequested so that UK experience can be reported to the internationalorganization responsible for its conversion to an international standard.A review of this publication will be initiated not later than 3 years afterits publication by the international organization so that a decision can
5、 betaken on its status. Notification of the start of the review period will bemade in an announcement in the appropriate issue of Update Standards.According to the replies received by the end of the review period,the responsible BSI Committee will decide whether to support theconversion into an inte
6、rnational Standard, to extend the life of theTechnical Specification or to withdraw it. Comments should be sent tothe Secretary of the responsible BSI Technical Committee at BritishStandards House, 389 Chiswick High Road, London W4 4AL.The UK participation in its preparation was entrusted to Technic
7、alCommittee B/543, Round and sawn timber.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 Britis
8、h Standard cannot confer immunityfrom legal obligations.DD CEN/TS 13307-2:2009TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 13307-2 December 2009 ICS 79.080 English Version Laminated and finger jointed timber blanks and semi-finished profiles for non-structural uses
9、- Part 2: Production control Ebauches et profils semi-finis en bois lamell-colls et assembls par enture multiples pour usages non structurels - Partie 2: Contrle de production Holzkanteln und Halbfertigprofile fr nicht tragende Anwendungen - Teil 2: Produktionskontrolle This Technical Specification
10、(CEN/TS) was approved by CEN on 1 September 2009 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted int
11、o a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) unti
12、l the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
13、ourg, 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 Brussels 2009 CEN All right
14、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 13307-2:2009: EDD CEN/TS 13307-2:2009CEN/TS 13307-2:2009 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Normative references 63 Terms and definitions .64 Material requirements .74.1 T
15、imber .74.1.1 General 74.1.2 Moisture content 74.2 Adhesive .85 Manufacturing 86 Sampling and testing 86.1 General 86.2 Initial type testing 96.3 Factory production control tests .96.3.1 Sampling .97 Testing requirements . 107.1 Conditioning chambers 10Air conditioning chamber requirements . 11Clima
16、te classification 11Air temperature and Relative Humidity conditions 117.2 Water tank 117.3 Loading machine 117.4 Ancillary equipment . 128 Sampling conditioning . 128.1 Sequences . 128.2 Pre-conditioning . 128.3 Conditioning sequences 138.3.1 Service Class 1 138.3.2 Service Class 2 138.3.3 Service
17、Class 3 139 Lamella glue line assessment . 139.1 Moisture resistance 139.1.1 Conditioning requirements 139.1.2 Delamination . 139.2 Shear assessment 149.3 Chisel/wedge assessment (FPC only) 149.4 Penetration test (FPC only) 149.5 Calculation of results . 1410 Finger joint assessment . 1410.1 Bending
18、 1410.2 Water tightness assessment (Service Class 3) . 1510.3 Iodine test 1510.4 Penetration test (coloured water test) 1610.5 Calculation of results . 16DD CEN/TS 13307-2:2009CEN/TS 13307-2:2009 (E) 3 11 Requirements . 1611.1 General . 1611.2 Laminate glue line . 1611.2.1 Moisture resistance . 1611
19、.2.2 Chisel test. 1711.2.3 Penetration test . 1711.3 Finger joints . 1711.3.1 Bending 1711.3.2 Bending (Service Class 3) 1711.4 Water tightness 1711.5 Penetration test (Coloured Water test) 1712 Records 18Annex A (informative) Classification of adhesives 19Annex B (informative) Manufacturing recomme
20、ndations . 20B.1 Premises . 20B.2 Storage . 20B.2.1 Timber . 20B.2.2 Adhesive . 20B.2.3 Finished products . 20B.3 Equipment 20B.4 Tolerance 20B.5 Moisture content 21Annex C (informative) Calculation of results for laminated profiles . 22C.1 Calculation of de-lamination quality of the glue line . 22C
21、.2 Calculation of the shear strength of the glue line 22Annex D (informative) Calculation of results for finger joints 24D.1 Calculation of finger joints strength under bending . 24D.2 Calculation of strength radio under bending for moisture resistance 25DD CEN/TS 13307-2:2009CEN/TS 13307-2:2009 (E)
22、 4 Foreword This document (CEN/TS 13307-2:2009) has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber”, the secretariat of which is held by AFNOR. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CEN
23、ELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech Republic,
24、 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. DD CEN/TS 13307-2:2009CEN/TS 13307-2:2009 (E) 5 Introduc
25、tion The production requirements and control described in this Technical Specification are designed so as to obtain a reliable and durable bond between the lamellae, in order that the bonds in the glued laminated blanks will maintain their integrity throughout their intended service life. Such blank
26、s are not intended to be used as load-bearing members. DD CEN/TS 13307-2:2009CEN/TS 13307-2:2009 (E) 6 1 Scope This Technical Specification specifies the method of control and tests for glue bond performance of lamination and finger jointing processes employed in the production of timber blanks and
27、semi-finished profiles (products) for joinery applications. The methods of control are set out to ensure the durability of the glue line according to the service class. The specific requirements for dimensions, stability and moisture content are given in EN 13307-1. 2 Normative references The follow
28、ing 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. EN 204, Classification of thermoplastic wood adhesives for
29、non-structural applications EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures Classification and performance requirements EN 392, Glued laminated timber Shear test of glue lines EN 408, Timber structures Structural timber and glued laminated timber Determination of som
30、e physical and mechanical properties EN 12765, Classification of thermosetting wood adhesives for non-structural applications EN 13183-1, Moisture content of a piece of sawn timber Part 1: Determination by oven dry method EN 13183-2, Moisture content of a piece of sawn timber Part 2: Estimation by e
31、lectrical resistance method EN 13183-3, Moisture content of a piece of sawn timber Part 3: Estimation by capacitance method EN 13307-1, Timber blanks and semi-finished profiles for non-structural uses Part 1 : Requirements EN 13354, Solid wood panels (SWP) Bonding quality Test method EN 14220, Timbe
32、r and wood-based materials in external windows, external door leaves and external doorframes Requirements and specifications EN 14221, Timber and wood-based materials in internal windows, internal door leaves and internal doorframes Requirements and specifications EN 14257, Adhesives Wood adhesives
33、Determination of tensile strength of lap joints at elevated temperature (WATT 91) EN 14298, Sawn timber Assessment of drying quality 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 adhesive failure failure of the glue bond, where an adhesive
34、film, free of wood particles, may be detected on the opposing sheared wood surfaces DD CEN/TS 13307-2:2009CEN/TS 13307-2:2009 (E) 7 3.2 wood failure failure of the glueline which is not an adhesive failure, where wood fibres remain firmly adhered to opposing surfaces of the sheared glue line 3.3 woo
35、d failure percentage percentage of the wood failure area in relation to the total sheared area 3.4 service classes 1, 2 and 3 classification system which indicates the average equilibrium moisture content of wood in service, described in EN 13307-1 3.5 batch profiles with same lay-up prepared within
36、 the same time period in same production line 3.6 profile type profile defined by: a) the wood species or combination of wood species; b) the glue; c) the intended service class; d) the type of connection between the timber elements including the profile, laminating, edge-jointing and end-jointing a
37、nd the cross section of the lamella; e) profile shape 3.7 thermoplastic adhesive adhesive capable of being softened by heat and hardened by cooling NOTE “Hardened“ as opposed to “chemically cured“. 3.8 thermosetting adhesive cross-linked adhesive which has undergone a chemical reaction by the action
38、 of e.g. heat, catalysts, ultraviolet light, etc., leading to a relatively infusible state 4 Material requirements 4.1 Timber 4.1.1 General All the requirements for timber are given in EN 13307-1. 4.1.2 Moisture content Timber shall be dried to a moisture content level appropriate to adhesive being
39、used and end use application. DD CEN/TS 13307-2:2009CEN/TS 13307-2:2009 (E) 8 Guidance on the moisture content of the timber in the completed components is given in Table 1 for the particular end uses described. Table 1 Typical moisture content levels of timber in particular end uses Service classes
40、 Expected average moisture content in service a Examples of end use products Applicable product standards 1 Up to about 12 % Internal doors and windows EN 14221 2 Up to about 18 % Products sheltered from rain (External doors, windows) EN 14220 3 Above 18 % b External doors or windows EN 14220 aMoist
41、ure content known to occur in service under conditions of constant relative humidity and temperature. bAt least some weeks yearly. The same requirements apply to wood intended for finger jointing of the lamellae. Moisture content measurements made with calibrated resistance moisture meters are consi
42、dered satisfactory. The moisture content of any piece or parcel shall be estimated using the method described in EN 13183-2 or EN 13183-3. In the case of a dispute the method to be used shall be the method described in EN 13183-1 (this method is a destructive method). The method of measuring average
43、 moisture content is given in EN 14298. NOTE See Annex B for practical application recommendations. 4.2 Adhesive The selected adhesive shall be capable of producing strong and durable joints so that the integrity of the bond is maintained throughout the life of the product. The minimum adhesive requ
44、irements for each of the service classes for adhesives are given in Annex A. 5 Manufacturing The manufacturing process is critical for the production of laminated and finger jointed products. Manufacturing recommendations are provided in Annex B. 6 Sampling and testing 6.1 General In order to ensure
45、 the integrity of the glueline of glued laminated and/or finger jointed blanks a representative sample of the product shall be tested during production (FPC). The number of samples to be selected is related to the type of test. DD CEN/TS 13307-2:2009CEN/TS 13307-2:2009 (E) 9 6.2 Initial type testing
46、 The tests, size of test pieces and sample size required at the ITT stage are set out in Table 2. Test pieces shall be taken at least 50 mm from the end of a sampled profile. The sampling requirements are per profile type. Table 2 ITT sampling requirements for laminated glue line and finger tests IT
47、T Sampling Laminated profile Test Size of test piece Sample sizeMoisture resistance (Delamination and shear strength tests) (see 9.1.2 and 9.2) Length (50 1) mm; Width width of profile but 50 mm; Thickness overall of laminated profile. 60 samples by selecting 30 gluelines from at least 15 profiles,
48、on each glue line two test pieces are cut to make two test batches. If the width of the profile exceeds 50 mm, the glue line test pieces shall be cut at random along the width of the profile (or length of the glue line along the cross section). Finger JointsTest Size of test piece Sample size a Bend
49、ing (see 10.1) Length 15 x thickness; Width width of profile but 100 mm; Thickness overall of piece. 30 samples with a finger joint and 30 without. Moisture resistance (bending); (only for Service Class 3) Thickness 5 mm to 6 mm. b 30 finger joints sampled with two test pieces created at each finger joint (one for each face). Watertightness (only for Service Class 3) (see 10.2) Le
