1、BRITISH STANDARD BS EN ISO 7459:2004 Glass containers Thermal shock resistance and thermal shock endurance Test methods The European Standard EN ISO 7459:2004 has the status of a British Standard ICS 55.100 BS EN ISO 7459:2004 This British Standard was published under the authority of the Standards
2、Policy and Strategy Committee on 8 September 2004 BSI 8 September 2004 ISBN 0 580 44432 5 National foreword This British Standard is the official English language version of EN ISO 7459:2004. It is identical with ISO 7459:2004. The UK participation in its preparation was entrusted to Technical Commi
3、ttee PKW/0, Packaging, 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 the BS
4、I 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 responsible for
5、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 inter
6、ests 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 ISO title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notice displayed in this
7、document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO7459 March2004 ICS55.100 Englishversion GlasscontainersThermalshockresistanceandthermalshock enduranceTestmethods(ISO/FDIS7459:2004) Rci
8、pientsenverreRsistanceauchocthermiqueet enduranceauchocthermiqueMthodesdessai(ISO 7459:2004) BehltnisseausGlasBestndigkeitgegenAbschrecken undTemperaturwechselbestndigkeitPrfverfahren(ISO 7459:2004) ThisEuropeanStandardwasapprovedbyCENon3November2003. CENmembersareboundtocomplywiththeCEN/CENELECInte
9、rnalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeoffi
10、cialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estoni
11、a,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCent
12、re:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO7459:2004:EENISO7459:2004(E) 2 Contents page Foreword3 1 Scope 4 2 Termsanddefinitions. .4 3 Apparatus .4 3.1 Coldwaterbath . .4 3.2 Hotwaterbath 4 3.3 Basket .4
13、 4 Sampling.4 5 Procedure .5 6 Thermalshockresistance .5 6.1 Passtest . 5 6.2 Progressivetesttoaspecifiedpercentageofbreakages . 5 6.3 Totalprogressivetest 5 6.4 HighIeveltest. 5 7 Thermalshockendurance . .5 8 Safetyrequirements . .6 9 Testreport . .6 Bibliography 8ENISO7459:2004(E) 3 Foreword Thisd
14、ocument(ENISO7459:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC261,“Packaging“,the secretariatofwhichisheldbyAFNOR,incollaborationwithTechnicalCommitteeISO/TC63“Glasscontainers“. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthel
15、atestbySeptember2004,andconflictingnationalstandardsshallbewithdrawnatthe latestbySeptember2004. ThisdocumentincludesaBibliography. Efficientpackagingisofgreatimportanceforthedistributionandtheprotectionofgoodsandtheenvironment. Insufficientorinappropriatepackagingcanleadtodamageorwastageoftheconten
16、tsofthepack. Thisstandardispartofaseriesofstandardsfor“GlasscontainersTestmethods“: ENISO7458, GlasscontainersInternalpressureresistanceTestmethods(ISO7458:2004) ENISO7459, GlasscontainersThermalshockresistanceandthermalshockenduranceTestmethods (ISO:2004) prEN ISO 8106,GlasscontainersDeterminationo
17、fcapacitybygravimetricmethodTestmethod (ISO/FDIS8106:2003) ENISO8113, GlasscontainersResistancetoverticalloadTestmethod(ISO8113:2004) EN 29008, GlassbottlesVerticalityTestmethod(ISO9008:1991) EN 29009, GlasscontainersHeightandnonparallelismoffinishwithreferencetocontainerbaseTest methods(ISO9009:199
18、1) EN 29885, WidemouthglasscontainersDeviationfromflatnessoftopsealingsurfaceTestmethods (ISO9885:1991) AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cyprus,CzechRepublic,Denmark, Estonia,
19、Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta, Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.ENISO7459:2004(E) 4 1Scope ThisEuropeanStandardspecifiestestmethodsfordeterminingthethermalshockresistanceandth
20、ermalshock enduranceofglasscontainers. ThisEuropeanStandarddoesnotapplytothedeterminationofpropertiesoflaboratoryglassware(seeISO718). 2 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply. 2.1 container generaltermappliedtoglassbottlesandjars 2.2 thermalsho
21、ck suddenchangeintemperatureappliedtocontainers 2.3 thermalshockresistance thermalshock,measuredinC,whichacontainercanwithstandwithoutbreaking 2.4 thermalshockendurance interpolatedthermalshockresistancevalueatwhich50%ofthecontainerswillprobablyfail 3Apparatus 3.1Coldwaterbath Comprisingabathortankc
22、apableofcontainingatleast8dm 3 ofwaterforeachkilogramofglasstestedatone time.ltshallbefittedwithawatercirculator,acontrolunitfortemperatureandathermostaticcontrolcapableof maintainingthewatertemperaturetowithin 1 C ofaspecifiedlowertemperature,t 2, withintherangeof(22 5)C (seeNOTEto6.3). 3.2Hotwater
23、bath Comprisingabathortankcapableofcontainingatleast8dm 3 ofwaterforeachkilogramofglassbeingtestedat onetime.ltshallbefittedwithawatercirculator,acontrolunitfortemperatureandathermostaticallycontrolled heatercapableofmaintainingthewatertemperaturetowithin1Cofaspecifieduppertemperature,t 1 . 3.3Baske
24、t Basketmadeoutoforcoatedwithaninertmaterialwhichwillnotdamagethecontainers.Thebasketshallbe capableofholdingthecontainersuprightandseparate,andshallbefittedwithaperforatedlidtopreventthe containersfromfloatingwhenimmersed.Forthemultipletestingofcontainers,itmaybecombinedwithan automaticdeviceforimm
25、ersingthebasketofcontainersinthehotbath(3.2)andtransferringittothecoldbath (3.1). 4Sampling Thetestshallbeperformedonapredeterminednumberofcontainers. ThecontainersusedforthetestshallnothavebeensubjectedtoanyothermechanicalorthermaltestprocedureENISO7459:2004(E) 5 whichcouldadverselyaffecttheirtherm
26、alshockresistance. Thesamplesshallbeselectedtoprovidetheinformationwhichisrequiredfromtheparticulartest. 5Procedure 5.1 Fillthecoldbath(3.1)withwatertoavolumeequaltoatleast8dm 3 foreachkilogramofglasstobetested andtoadepthsufficientforcompleteimmersionofthecontainersplusatleast50mm.Adjustthewater te
27、mperaturetowithin1Cofthespecifiedlowertemperature,t 2 . 5.2 Fillthehotbath(3.2)withatleastthesamevolumeofwaterasin5.1,thenheatandmaintainthe temperaturetowithin1Cofthespecifieduppertemperature,t 1 . 5.3 Placetheemptycontainersinthebasket(3.3)sothattheyarehelduprightandseparate,thenfastenthelid andim
28、mersethebasketinthehotbath,untilthecontainersarecompletelyfilledwithwaterandthetopsoftheir finishesareatleast50mmbelowthewaterlevel.Ifnecessary,adjusttheheatcontroltomaintainthebath temperaturetowithin1Cofthespecifieduppertemperature,t 1 ,andkeepthecontainersimmersedatthis temperatureforatleast5min.
29、 5.4 Transferthebasketwiththefilledcontainers,eithermechanicallyormanually,withinmax.16s,fromthehot bathtothecoldbathsothatthecontainersarecompletelyimmersed.Keepthecontainersimmersedfor30s,then removethebasketanditscontentsfromthecoldbath. 5.5 Determineassoonaspossiblethenumberofcontainerswhichhave
30、failedthetest,byinspectingeachone forcracksorbreakage. 6 Thermalshockresistance 6.1Passtest Asampleshallbedeemedtohavepassedthetestifnomorethantheagreednumberarecrackedorbroken,after beingsubjectedtoanagreedthermalshockoft 1 t 2 . 6.2Progressivetesttoaspecifiedpercentageofbreakages Containerswhichpa
31、ssthetestshallberepeatedlytested,asdescribedinclause5,butwithincreasingt 1 t 2 values,untilaspecifiedpercentageofthecontainersfailthetest. NOTE Normally,thedifferencebetweent 2 andt 1 isincreasedin5Cincrements. 6.3Totalprogressivetest Containerswhichpassthetest,describedinclause5,shallbetestedinacco
32、rdancewith6.2,untilallthe containersfailthetest. NOTE lfthetesthasnotbeenconcludedbythetimethetemperatureofthehotwaterbathreaches95C,thetestshould becontinuedbyloweringthetemperatureofthecoldwaterbath. 6.4HighIeveltest Containersshallbetestedinaccordancewithclause5,butatatemperaturedifference,t 1 t
33、2 ,sufficientlyhighto causeanagreedpercentagetofailinasingletest. 7 Thermalshockendurance Thecontainersshallbetestedinaccordancewiththetotalprogressivetest,describedin6.3,andthenumberof failuresateachtemperaturedifferenceshallberecorded.ENISO7459:2004(E) 6 Thethermalendurance,whichistheprobabletempe
34、raturedifferenceatwhich50%ofthecontainerswouldhave failed,isdeterminedfromagraphofthecumulativepercentageoffailuresagainstthetemperaturedifferenceat whichthecontainersfailed. 8 Safetyrequirements Thistestproceduremaybeinjurioustohealthifadequateprecautionsarenottakenbytheoperator.Testsshould becarri
35、edoutinasafemannerasrecommended. 9 Testreport Thetestreportshallincludethefollowing: a) referencetothisEuropeanStandard, b) numberofcontainersinthesampletestedandsamplingmethod, c) temperatureofthecoldbath, d) testresults: 1) forthepasstest,inaccordancewith6.1: temperaturedifference,t 1 t 2 numberof
36、containerswhichfailedthetest specificationlimitandwhetherthesamplespassedthetest 2) fortheprogressivetest,inaccordancewith6.2: highesttemperaturedifference,t 1 t 2 ,atwhichnofailureoccurred numberofcontainerswhichfailedateachtemperaturedifference temperaturedifferenceneededtoachievethepredeterminedp
37、ercentageoffailures,expressed tothenearestincrementstep 3) forthetotalprogressivetest,inaccordancewith6.3: temperaturedifferencesusedinthetest numberofcontainerswhichfailedateachtemperaturedifference meantemperaturedifferenceatwhichfailureoccurs 4) forthehighleveltest,inaccordancewith6.4: temperatur
38、edifferenceusedinthetest percentageofcontainerswhichfailedatthattemperaturedifference 5) forthethermalshockendurancetest,inaccordancewithclause7: temperaturedifferenceatwhich50%ofthesamplewouldhavefailed. e) dateoftestENISO7459:2004(E) 7 f) location g) signatureofresponsiblepersonENISO7459:2004(E) 8
39、 Bibliography 1ISO 718:1990, LaboratoryglasswareThermalshockandthermalshockenduranceTestmethods.blankBS EN ISO 7459:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK vie
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