EN 13780-2003 en Touch and close fasteners - Determination of longitudinal shear strength《粘接拉链 纵向剪切强度测定》.pdf

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1、BRITISH STANDARD BS EN 13780:2003 Touch and close fasteners Determination of longitudinal shear strength The European Standard EN 13780:2003 has the status of a British Standard ICS 61.040 BS EN 13780:2003 This British Standard was published under the authority of the Standards Policy and Strategy C

2、ommittee on 13 February 2004 BSI 13 February 2004 ISBN 0 580 43416 8 National foreword This British Standard is the official English language version of EN 13780:2003. It supersedes BS 7271:1990, which will be withdrawn in April 2004. The UK participation in its preparation was entrusted to Technica

3、l Committee TCI/66, Apparel, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in

4、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 contract. Users are responsibl

5、e 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 change, and keep the UK

6、 interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates w

7、hen the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13780 February2003 ICS61.040 Englishversion TouchandclosefastenersDeterminationoflongitudinalshear strength FermeturesautoagrippantesDterminationdela rsistance

8、latractionlongitudinale HaftverschlsseBestimmungderLngsscherfestigkeit ThisEuropeanStandardwasapprovedbyCENon12December2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptod

9、atelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlang

10、uageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn

11、 ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13780:2003EEN13780:2003(E) 2 Contents page

12、Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Principle4 5 Apparatus .4 6 Testspecimens 5 7 Conditioning.5 8 Procedure .6 9 Calculationandexpressionofresults. 7 10 Testreport 8EN13780:2003(E) 3 Foreword Thisdocument(EN13780:2003)hasbeenpreparedby TechnicalCommitteeCEN/TC248

13、“Textilesandtextile products“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandard shallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyAugust2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby August2003. AccordingtotheCEN/CENELE

14、CInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,Switzerlandandt

15、heUnitedKingdom.EN13780:2003(E) 4 1Scope ThisEuropeanStandardspecifiesamethodfordeterminingthelongitudinalshearstrengthofatouchandclose fastener. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappr

16、opriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments

17、). EN12240,TouchandclosefastenersDeterminationoftheoverallandeffectivewidthsoftapesandtheeffective widthofaclosure. EN20139,TextilesStandardatmospheresforconditioningandtesting(ISO139:1973). ENISO75001,MetallicmaterialsVerificationofstaticuniaxialtestingmachinesPart1:Tension/compression testingmachi

18、nes(ISO75001:1999). 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply: 3.1 longitudinalshearstrength maximumforceperuniteffectivearearequiredtoseparatethetwotapesformingthespecifiedclosureina shearingactionunderthespecifiedconditionsoftest 3.2 effectivea

19、reaofaclosure effectiveareaofaclosureistheproductoftheeffectivewidthofaclosureandthelengthofaclosure 4Principle Matedcomponenttapesofatouchandclosefastenerareseparatedataconstantratesuchthattheseparation occursprogressivelyalongtheclosureinadirectionparalleltothelengthofthetapesformingtheclosureandi

20、n theplaneoftheclosure. 5Apparatus 5.1 Constantrateofextensiontensiletestingmachine ,asspecifiedinENISO75001,connectedtoacomputer, viaasuitableinterface,capableofrecordingdataatarateofatleast20pointspersecond.EN13780:2003(E) 5 5.2 Metalroller,madeofphosphorbronze , withadiameterof(1002)mm(seeFigure2

21、),whichshallbe selectedinaccordancewithTable1. Table1Selectionofmetalroller Effectivewidthofclosure Was determinedbyEN12240 mm Metalrollermass kg W 12,0 1,0 0,1 12,0 52,0 10,0 0,1 NOTE Themostimportantparametersfortherollerareitsdiameterandmass.Itswidthshouldbechoseninaccordance withthespecificdensi

22、tyofthephosphorbronzeusedinitsmanufacture. 5.3 Setofforkswithahandle (seeFigure3)whichengagesthemetalroller(5.2)andallowstherollertobe movedwithoutanyextradownforcebeingapplied(seeFigure4). 6 Testspecimens Cut4testspecimensofbothmaleandfemalecomponentsatleast100mmlongandmarkeachwithan“X“atone endand

23、a“Y“attheotherend,suchthateachtestspecimenofliketapeismarkedidentically. 7Conditioning Conditionthetestspecimensforaminimumof24hinaccordancewiththestandardtemperateatmospherefor testingasspecifiedinEN20139.Theclosingofthetestspecimensandthetestingofthetouchandclosefasteners shallalsotakeplaceunderth

24、eseconditions.EN13780:2003(E) 6 8Procedure 8.1 Combinationsofclosure Make4closuresintotal,1closureeachbeingmadeasperthecombinationsshowninFigure1. Key 1Combination A 2 CombinationB 3 CombinationC 4 CombinationD Figure1Longitudinalshearstrengthcombinationsofclosure 8.2 Methodofclosure Selectthelength

25、ofoverlapinaccordancewiththefollowingtable: 50mmforfastenersystemscomprisedofwovenhooktapeandwovenlooptape; 20mmforfastenersystemscomprisedofeitherwovenorknittedmushroomtapeandknittedlooptape; 20mmforfastenersystemscomprisedofaplasticmaletapeandknittedlooptape; 50mmforfastenersystemsnotlistedhereabo

26、ve,butintheeventthattensilefailureoccurstoeitherofthetapes duringtesting,theoverlapshouldbereducedto20mm. Makeeachclosureasfollows: Placethemaletapeonaflatsurfacewiththepileuppermostandthenplacethefemaletapeontopwiththepile facingdownwardssothatonlytheselectedlengthofoverlaptogetherwiththeoverallwid

27、thmakeaclosure,using minimalhandpressure. Traversethemetalroller(5.2)atarateofapproximately200mm/salongthetapesinonedirection,then immediatelytraverseintheoppositedirection,thenturnthematingtapesover. Repeattheprocedureuntiltherollerhastraversedthematingtapes5timesineachdirectioni.e.atotalof10 times

28、. Takecarethatthecentreofgravityoftherollerdoesnotdeviatefromthecentrelineofthetapesduringthis operation. Takecarethattherollercoverstheentirewidthofthematingtapes. NOTE Thetapesareturnedovertominimisecurvature.EN13780:2003(E) 7 8.3 Conductthetestforeachclosure Setupthetensiletestingmachine(5.1)such

29、thatthejawsare100mmapart. Mountthecombinedtestspecimenintothejawsofthetensiletestingmachine(5.1)suchthatthefreeendofthe femaletapeisintheupperjawandthefreeendofthemaletapeisinthelowerjaw,takingcaretoalignthetest specimeninorderthattheforceappliedisuniformlydistributedacrossthewidthoftheclosure. Sett

30、hetensilemachineinmotionataconstantrateofjawseparationof(100 10)mm/min.Recordforceagainst jawseparation,untileithertheclosurehasbeenseparatedoroneofthetapeshasundergonetensilefailure. Recordthemodeoffailure. 9 Calculationandexpressionofresults 9.1 Intheeventthatatensilefailureoccurs,thenthebreakingf

31、orceshallbeconsideredastheforcerequiredto sheartheclosure. 9.2 Calculatetheeffectiveareaofclosure,bymultiplyingtheeffectivewidthoftheclosurebythelengthofthe overlapandexpresstheresultinsquarecentimetres. 2 100 cm W L A e o e = (1) 9.3 Foreachcombinationcalculatethelongitudinalshearstrengthbydividing

32、themaximumforcerequiredto sheartheclosurebytheeffectiveareaoftheclosureandexpresstheresultinnewtonspersquarecentimetre. 2 / cm N A F S e i i = (2) 9.4 Calculatethemeanlongitudinalshearstrengthoftheclosurebycalculatingthearithmeticmeanofthe longitudinalshearstrengthsofthe4combinations. Notestotheabov

33、ecalculations: W e =effectivewidthoftheclosure(mm) L o =lengthofoverlap(mm) A e =effectiveareaoftheclosure(cm 2 ) F i =individualforcerequiredtoshearaclosure(N) S i =individuallongitudinalshearstrength(N/cm 2 ) 9.5 Expresstheminimumlongitudinalshearstrengthoftheclosureofthe4combinations. 9.6 Express

34、themaximumlongitudinalshearstrengthoftheclosureofthe4combinations.EN13780:2003(E) 8 10 Testreport Reportthefollowinginformation: a) numberanddateofthisEuropeanStandard; b) dateofthetest; c) identificationofthetouchandclosefastenertapes; d) lengthoftheoverlap; e) theminimumandmaximumlongitudinalshear

35、strengthsforthe4combinations,andthemeanlongitudinal shearstrengthoftheclosure; f) themodesoffailure; g) anydeviationfromthisstandardandanyincidentlikelytohaveaffectedtheresults. Dimensionsinmillimetres 1 9,5 9,5 100 Key 1Chooserollerwidthtomeetspecifiedmass Figure2MetalrollerEN13780:2003(E) 9 Dimens

36、ionsinmillimetres 2 3 1 100 100 70 10 10 10 10 Key 1Handle 2Forks 3Spacebetweentheforkstobe2mmgreaterthantherollerwidth Figure3Setofforkswithahandle Figure4RollingmechanismfortouchandclosefastenersBS EN 13780:2003 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the

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