BS EN 12961-2001 Adhesives for leather and footwear materials - Determination of optimum activation temperatures and maximum activation life of solvent-based and dispersion adhesiv.pdf

1、BRITISH STANDARDBS EN 12961:2001Incorporating Amendment No. 1Adhesives for leather and footwear materials Determination of optimum activation temperatures and maximum activation life of solvent-based and dispersion adhesivesThe European Standard EN 12961:2001, with the incorporation of amendment A1:

2、2005, has the status of a British StandardICS 83.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 12961:2001This British Standard was publis

3、hed under the authority of the Standards Policy and Strategy Committee on 15 May 2001 BSI 16 December 2005ISBN 0 580 37420 3National forewordThis British Standard is the official English language version of EN 12961:2001, including amendment A1:2005. It supersedes BS 5131 Section 1.4:1979 which is w

4、ithdrawn.The start and finish of text introduced or altered by CEN amendment is indicated in the text by tags !“. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1:2005 is indicated by !“.The UK participation in its preparation w

5、as entrusted to Technical Committee PRI/52, Adhesives, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this d

6、ocument may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contrac

7、t. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for c

8、hange, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover.The BSI copyright date dis

9、played in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments15680 16 December 2005 See national forewordEN 12961 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM March 2001 ICS 83.180 English version Adhesives for leather and footwear

10、 materials Determination of optimum activation temperatures and maximum activation life of solvent-based and dispersion adhesives (includes amendment A1:2005) Adhsifs pour cuir et matriaux pour articles chaussants Dtermination de la temprature optimale dactivation et de la dure maximale dactivation

11、des adhsifs base de solvant et en dispersion (inclut lamendement A1:2005) Klebstoffe fr Leder und Schuhwerkstoffe Bestimmung der optimalen Aktiviertemperatur und der maximalen Dauer der Aktivierbarkeit von Lsemittel- und Dispersionsklebstoffen (enthlt nderung A1:2005) This European Standard was appr

12、oved by CEN on 4 February 2001; amendment A1 was approved by CEN on 21 March 2005. 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

13、 bibliographical references concerning such national standards may be obtained on application to the 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 responsibilit

14、y of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,

15、 Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels

16、 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12961:2001 + A1:2005 E+A1 May 2005 Page 2EN 12961:2001ContentsPageForeword. 31 Scope . 42 Normative references . 43 Terms and definitions 44 Principle. 45 Safety . 56 Adhesive a

17、nd materials 57 Apparatus 58 Test pieces 59 Procedure 610 Evaluation and expression of results. 811 Test report . 8Page 3EN 12961:2001ForewordThis European Standard has been prepared by Technical Committee CEN/TC 193, Adhesives, the Secretariat of which is held by AENOR.This European Standard shall

18、be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2001, and conflicting national standards shall be withdrawn at the latest by September 2001.According to the CEN/CENELEC Internal Regulations, the national standards o

19、rganizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Foreword to amendm

20、ent 1This document (EN 12961:2001/A1:2005) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. 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

21、by November 2005, and conflicting national standards shall be withdrawn at the latest by November 2005.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Rep

22、ublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Page 4EN 12961:20011 ScopeThis European Standard specifies the

23、determination of optimum heat activation temperatures and maximumactivation life of solvent-based or dispersion adhesives coated onto adherends, primarily based on therequirements for sole attaching adhesives. Optimum heat activation temperatures and maximum heatactivation life depend mainly on the

24、type, composition and colour of the adhesive as well as the footwearmaterial used.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text and the publication

25、s are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publications applyto this European Standard only when incorporated in it by amendment or revision. For undated referencesthe latest edition of the publication referred to applies (including amendments)

26、.EN 522, Adhesives for leather and footwear materials Bond strength Minimum requirements andadhesive classification.EN 923, Adhesives Terms and definitions.EN 1066, Adhesives Sampling.EN 1067, Adhesives Examination and preparation of samples for testing.EN 1392, Adhesives for leather and footwear ma

27、terials Solvent-based and dispersion adhesives Testmethods for measuring the bond strength under specified conditions.ISO 554, Standard atmospheres for conditioning and/or testing Specifications.ISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shorehardnes

28、s).3 Terms and definitionsFor the purpose of this standard, the definitions in accordance with EN 923, EN 1392 and the followingdefinitions apply.3.1optimum activation temperaturesrange of surface temperatures of a heat activated adhesive coat at which a bond is produced which on peeltesting has sat

29、isfactory strength with a proportion of non-coalescence of less than 10 %.3.2maximum activation lifelongest time interval, beginning with adhesive application, at the end of which, compared to bonds obtainedafter drying without storing, heat activation at an optimum activation temperature produces b

30、onds of lessthan 10 % reduction in peel strength with non-coalescence of less than 10 %.4 PrincipleThe surfaces of the upper and the sole materials used for testing are treated specifically to the type ofmaterial. Strips of specified size and form are cut from the treated materials and coated with t

31、he adhesiveunder test. The coats applied are dried for a specified period of time under specified conditions.Page 5EN 12961:2001For determination of the optimum activation temperatures, coats on sole material strips are heat activated tovarious surface temperatures at intervals of 10 C from 50 C to

32、90 C, unless otherwise specified, andimmediately assembled with dried but not activated coats on strips cut from upper material. The test piecesproduced are stored for a specified time under specified conditions before their strength is determined in apeel test in accordance with EN 1392.For determi

33、nation of the maximum activation life, coats on sole material strips are dried and heat activated,after various specified time intervals, to a determined optimum activation temperature and immediatelyassembled with dried but not activated coats on strips cut from upper material. The test pieces obta

34、ined arestored for a specified time under specified conditions before their strength is determined in a peel test inaccordance with EN 1392.5 SafetyPersons using this standard shall be familiar with normal laboratory practice.This standard does not purport to address all the safety problems, if any,

35、 associated with its use.It is the responsibility of the user to establish safety and health practices and to ensure compliance with anyEuropean and national regulatory conditions.6 Adhesive and materials6.1 AdhesiveIdentify the adhesive under test in the test report, in particular note name and/or

36、designation, manufacturer,date of manufacture and/or supply and/or lot number, main polymer and colour. For two part adhesivesidentify the nature of the cross-linking agent and the mixing ratio of the components.6.2 MaterialsUse the footwear material the use of which is intended or specified (e.g. f

37、or bonding in a footwear productionline) or a reference test footwear material in accordance with EN 522 representing a group of footwearmaterials based on a defined polymer (e.g. for research and development purposes).If reference footwear test material(s) in accordance with EN 522 are used, make a

38、 reference to it (them) inthe test report.Identify the footwear material(s) used for testing. Record name and/or designation, manufacturer, date ofmanufacture and/or supply, type of upper and of soling material. For leathers list colour, thickness and typeof tannage (if known), for rubber and plasti

39、c materials, colour, polymer base and shore-hardness inaccordance with ISO 868. Include this identification of the material in the test report.7 ApparatusApparatus described in EN 1392 is required with the following considerations.7.1 Heat activator, infra-red activator for heating quickly adhesive

40、coats to the required temperature.7.2 Equipment for measurement of temperature, a non-contact temperature measurement device formeasuring quickly the temperature of activated adhesive coats.8 Test pieces8.1 Preparation of materialCondition all upper and soling materials to an equilibrium state in th

41、e standard atmosphere 23/50 inaccordance with ISO 554.Page 6EN 12961:20018.2 Preparation of bonding surfacesProceed as described in EN 1392.8.3 Form of material strips and test piecesProceed as specified in EN 1392 for a peel test at (23 Gb1 2) C.8.4 Cutting of material stripsProceed as described in

42、 EN 1392.8.5 Number of material strips and test pieces8.5.1 For determination of the optimum activation temperatures prepare at least 10 strips of upper and10 strips of soling material for the preparation of 10 test pieces (5 for preliminary and 5 for final testing). Inaddition, prepare at least 5 s

43、trips for measuring the time which the heat activator requires to heat thesurfaces of an adhesive coat on the soling material to a temperature specified in 9.1.2.8.5.2 For determination of the maximum activation life of one component adhesives prepare at least17 strips of upper and 17 strips of soli

44、ng material for the preparation of 17 test pieces (12 for preliminary and5 for final testing). For determination of the maximum activation life of two components adhesives prepare atleast 10 strips of upper and 10 strips of soling material for the preparation of 10 test pieces (5 for preliminaryand

45、5 for final testing).8.6 Preparation of the adhesiveTake a significant sample of the adhesive to be tested in accordance with EN 1066 and examine andprepare it in accordance with EN 1067.Proceed as described in EN 1392.Unless otherwise specified, and so recorded in the test report, allow a two compo

46、nents adhesive to maturefor (30 5) min after mixing.8.7 Application of the adhesiveProceed as described in EN 1392.9 Procedure9.1 Determination of the optimum activation temperatures9.1.1 Apply the adhesive (8.7) on the prepared (8.2) surfaces of upper and the soling material and allow thecoats, unl

47、ess otherwise specified and so recorded in the test report, to dry for (30 5) min at a controlledtemperature of (23 5) C and a relative humidity of less than 70 %, while allowing free evaporation ofsolvents.9.1.2 Using spare strips coated with the adhesive under test determine the time which the hea

48、t activator (7.1)requires to heat the surfaces of an adhesive coat on the soling material to a temperature of 50 C, 60 C,70 C, 80 C, and 90 C. The time required by the heat activator to reach 90 C shall not exceed 15 s. Formeasuring the temperature of activated adhesive coats use the non-contact tem

49、perature measurementdevices (7.2). Record the time required for each temperature.Page 7 EN 12961:2001 9.1.3 Activate the adhesive coat on one strip of the soling material to 50 C, assemble the activated coat immediately with a dried but unactivated coat on a strip of the upper material and start pressing the test piece. Carry out all operations from the end of activation to attainment of maximum pressure within 10 s. Proceed for pressing the test pieces in accordance with EN 1392. After pressing store the test pieces