1、November 2016 English price group 7No 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).ICS 83.180!%u“2588261www.din.deDIN E
2、N 204Classification of thermoplastic wood adhesives for nonstructural applications;English version EN 204:2016,English translation of DIN EN 204:2016-11Klassifizierung von thermoplastischen Holzklebstoffen fr nichttragende Anwendungen;Englische Fassung EN 204:2016,Englische bersetzung von DIN EN 204
3、:2016-11Classification des colles thermoplastiques pour bois usages non structuraux;Version anglaise EN 204:2016,Traduction anglaise de DIN EN 204:2016-11SupersedesDIN EN 204:200109www.beuth.deDocument comprises 10 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language origina
4、l shall be considered authoritative.11.16 DIN EN 204:2016-11 2 A comma is used as the decimal marker. National foreword This document (EN 204:2016) has been prepared by Technical Committee CEN/TC 193 “Adhesives” (Secretariat: AENOR, Spain). The responsible German body involved in its preparation was
5、 DIN-Normenausschuss Holzwirtschaft und Mbel (DIN Standards Committee Timber and Furniture), Working Committee NA 042-04-05 AA Spiegelausschuss zu CEN/TC 193/SC 1 Holzklebung. Amendments This standard differs from DIN EN 204:2001-09 as follows: a) references to tests with thick bond lines have been
6、deleted; b) 20 test pieces are now to be used for evaluation; c) additional information regarding conditioning sequences has been included in Table 2. Previous editions DIN 68602: 1972-06, 1973-12, 1979-04 DIN EN 204: 1991-10, 2001-09 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 204 August 2
7、016 ICS 83.180 Supersedes EN 204:2001English Version Classification of thermoplastic wood adhesives for non-structural applications Classification des colles thermoplastiques pour bois usages non structuraux Klassifizierung von thermoplastischen Holzklebstoffen fr nichttragende Anwendungen This Euro
8、pean Standard was approved by CEN on 8 July 2016. 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
9、rning such national standards may be obtained on application to the CEN-CENELEC 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 int
10、o its own language and notified to the CEN-CENELEC 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, Former Yugoslav Republic of Macedonia, France, G
11、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE
12、 FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 204:2016 E2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 3 T
13、erms and definitions . 5 4 Classification . 5 5 Test method 6 6 Requirements . 6 Bibliography 8 EN 204:2016 (E) DIN EN 204:2016-11 3 European foreword This document (EN 204:2016) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. This European
14、 Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2017, and conflicting national standards shall be withdrawn at the latest by February 2017. Attention is drawn to the possibility that some of the eleme
15、nts of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 204:2001. Compared to EN 204:2001 the following modifications have been made: a) references to tests with thick bond lines have been
16、removed; b) assessment is based on 20 test pieces; c) additional information on conditioning sequences added in Table 2. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium,
17、 Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerlan
18、d, Turkey and the United Kingdom. EN 204:2016 (E) DIN EN 204:2016-11 4 Introduction European Standards giving a common classification with respect to durability classes for wood adhesives will allow considerable improvement in consumer protection in any future product liability system with regard to
19、 properties guaranteed by the adhesive manufacturer. EN 204:2016 (E) DIN EN 204:2016-11 5 1 Scope This European Standard classifies thermoplastic resin based wood adhesives for non-structural applications into durability classes D1 to D4 based on the dry and wet strengths of bond-lines measured unde
20、r specified conditions after various conditioning treatments. For special applications, further tests that do not fall within the scope of this European standard can be applicable. The adhesives specified in this European standard are suitable for the bonding of furniture and interior structures, pa
21、nelling, doors, windows, stairs etc. made of wood or derived timber products. This European Standard does not specify the temperature resistance of bond-lines. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for i
22、ts application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 205:2016, Adhesives Wood adhesives for non-structural applications Determination of tensile shear strength of lap joints
23、EN 923, Adhesives - Terms and definitions 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 923 and the following apply. 3.1 thermoplastic resin thermoplast polymer or copolymer capable of being softened by heating and hardened by cooling SOURCE: EN 923
24、:2015, modified NOTE 1 to entry has been removed 3.2 thermoplastic wood adhesive adhesive whose main constituent is a thermoplastic resin and which has been formulated for bonding wood 4 Classification An adhesive shall be classified in accordance with Table 1, which gives examples of climatic condi
25、tions and fields of application in which the bonded member is to be used. The classification shall be based on tests on thin bond-lines as defined in EN 205:2016. EN 204:2016 (E) DIN EN 204:2016-11 6 Table 1 Description of durability classes Durability class Examples of climatic conditions and field
26、s of application D1 Interior, in which the moisture content of the wood does not exceed 15 % D2 Interior with occasional short-term exposure to running or condensed water and/or to occasional high humidity provided the moisture content of the wood does not exceed 18 % D3 Interior with frequent short
27、-term exposure to running or condensed water and/or to heavy exposure to high humidity. Exterior not exposed to weather D4 Interior with frequent long-term exposure to running or condensed water. Exterior exposed to weather but with protection by an adequate surface coating 5 Test method The adhesiv
28、e shall be tested in accordance with EN 205:2016 and as follows: a) bond-lines shall be tested according to their assigned durability class (see Table 1); b) the tests shall be performed using the appropriate conditioning sequence given in Table 2; c) the individual strength values in N/mm2rounded t
29、o 0,1 N/mm2and the mean value of the 20 test pieces for each conditioning sequence shall be recorded. Results from tests in which failure occurred in the wood at values below the specified minimum are invalid. Test pieces that are twisted, bended or showing other irregularities in form are valid if
30、they reach the requirements; otherwise, or if visual examination shows that the adhesive was not correctly applied, the results are invalid. All results, valid or invalid, shall be reported. Explanation of the invalid values shall be reported. The standard atmosphere used as a control climate is eit
31、her (20 2) C and (65 5) % relative humidity (RH), (20/65), or (23 2) C and (50 5) % relative humidity (RH), (23/50). 6 Requirements When tested in accordance with EN 205:2016 the mean strength of an adhesive shall conform to the values shown in Table 2. EN 204:2016 (E) DIN EN 204:2016-11 7 Table 2 M
32、inimum values of adhesives strength for thin bond-lines Conditioning sequences Adhesive strength in N/mm2Durability classes Sequence number Duration and condition D1cD2cD3cD4c1 7 daysain standard atmosphereb 10 10 10 10 2 7 days in standard atmosphere 3 h in water at (20 5) C 7 days in standard atmo
33、sphere 8 3 7 days in standard atmosphere 4 days in water at (20 5) C 2 4 4 7 days in standard atmosphere 4 days in water at (20 5) C 7 days in standard atmosphere 8 5 7 days in standard atmosphere 6 h in boiling water 2 h in water at (20 5) C 4 In each conditioning sequence, specimens shall change f
34、rom one step to another immediately (not gradually). For the conditioning sequences 3 and 5 the specimens shall be tested in wet state after removing them from water. NOTE 1 The seven days in standard atmosphere are included in the conditioning time mentioned EN 205:2016, 6.2. NOTE 2 A longer condit
35、ioning time between gluing and testing might be necessary as advised by the adhesive manufacturer. NOTE 3 The number used in the designation does not indicate ranking order. A given adhesive can be assigned to more than one durability class. a1 day = 24 h. b(20 2) C and (65 5) % relative humidity or
36、 (23 2) C and (50 5) % relative humidity. cAll minimum values indicated in the columns of durability classes D1 to D4 shall be reached as mean values for the classification of an adhesive (for example for D4, the conditioning sequences are 1, 3 and 5). = No test required. EN 204:2016 (E) DIN EN 204:2016-11 8 Bibliography 1 EN 12765, Classification of thermosetting wood adhesives for non-structural applications EN 204:2016 (E) DIN EN 204:2016-11
