1、BRITISH STANDARD BS EN ISO 7458:2004 Glass containers Internal pressure resistance Test methods The European Standard EN ISO 7458:2004 has the status of a British Standard ICS 55.100 BS EN ISO 7458:2004 This British Standard was published under the authority of the Standards Policy and Strategy Comm
2、ittee on 8 September 2004 BSI 8 September 2004 ISBN 0 580 44431 7 National foreword This British Standard is the official English language version of EN ISO 7458:2004. It is identical with ISO 7458:2004. The UK participation in its preparation was entrusted to Technical Committee PKW/0, Packaging, w
3、hich 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 BSI Catalogue under the se
4、ction 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 its correct application.
5、 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 interests informed; monitor r
6、elated 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 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last
7、issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO7458 March2004 ICS55.100 Englishversion GlasscontainersInternalpressureresistanceTestmethods (ISO/FDIS7458:2004) RcipientsenverreRsistancelapressioninterne Mthodesdessai(ISO7458:2004
8、) BehltnisseausGlasInnendruckfestigkeitPrfverfahren (ISO7458:2004) ThisEuropeanStandardwasapprovedbyCENon3November2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodateli
9、stsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguag
10、eandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,
11、 Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.N
12、o.ENISO7458:2004:EENISO7458:2004(E) 2 Contents page Foreword3 1 Scope 4 2 Sampling.4 3 Testmethods 4 3.1 Testmedium. 4 3.2 MethodA .4 3.2.1 General4 3.2.2 Apparatus .4 3.2.3 Procedure .4 3.2.4 Testreport . .5 3.3 MethodB .5 3.3.1 General5 3.3.2 Apparatus .5 3.3.3 Procedure .6 3.3.4 Testreport . .6 4
13、 Safetyrequirements . .7ENISO7458:2004(E) 3 Foreword Thisdocument(ENISO7458:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC261,“Packaging“,the secretariatofwhichisheldbyAFNOR,incollaborationwithTechnicalCommitteeISO/TC63“Glasscontainers“. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,e
14、itherbypublicationofanidenticaltextor byendorsement,atthelatestbySeptember2004,andconflictingnationalstandardsshallbewithdrawnatthe latestbySeptember2004. Efficientpackagingisofgreatimportanceforthedistributionandtheprotectionofgoodsandtheenvironment. Insufficientorinappropriatepackagingcanleadtodam
15、ageorwastageofthecontentsofthepack. Thisstandardispartofaseriesofstandardsfor“GlasscontainersTestmethods“: ENISO7458, GlasscontainersInternalpressureresistanceTestmethods(ISO7458:2004) ENISO7459, GlasscontainersThermalshockresistanceandthermalshockenduranceTestmethods (ISO7459:2004) prENISO8106, Gla
16、sscontainersDeterminationofcapacitybygravimetricmethodTestmethod (ISO/FDIS8106:2003) ENISO8113, GlasscontainersResistancetoverticalloadTestmethod(ISO8113:2004) EN 29008, GlassbottlesVerticalityTestmethod(ISO9008:1991) EN 29009, GlasscontainersHeightandnonparallelismoffinishwithreferencetocontainerba
17、seTest methods(ISO9009:1991) EN 29885, WidemouthglasscontainersDeviationfromflatnessoftopsealingsurfaceTestmethods (ISO9885:1991) AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cyprus,Czech
18、Republic,Denmark, Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta, Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.ENSO7458:2004(E) 4 1 Scope ThisEuropeanStandardspecifiestwotestmethodsforthedetermina
19、tionoftheinternalpressureresistanceof glasscontainers,MethodAbyapplicationofuniforminternalpressureforapredeterminedperiodandMethodBby applicationofinternalpressureincreasingatapredeterminedconstantrate. 2Sampling Thetestshallbeperformedonapredeterminednumberofcontainers.Thecontainersusedforthetests
20、hallnot havebeensubjectedtoanyothermechanicalorthermaltestwhichcouldaffecttheirinternalpressureresistance. 3Test methods 3.1 Testmedium Thetestmediumistapwater. 3.2MethodA 3.2.1 General Applicationofuniforminternalpressureforapredeterminedperiod. 3.2.2Apparatus Theapparatusshallcomplywiththefollowin
21、gprinciples: a) Thecontainertobetestedshallbeheldinsuchamannerthatitissuspendedbythefinish. b) Thereshallbearesilientsealbetweenthesealingsurfaceandthepressureheadinordertoretainthe pressurizingmediumduringthetest. c) Thereshallbeameansofapplyingfluidpressuretoapredeterminedlevel,ataninitialrateof(1
22、02)bar s 1 =(1,00,2)MPa s 1 andofmaintainingthatpressureconstantduringthetest. 3.2.3Procedure 3.2.3.1 Fillthecontainerswithwater. NOTE Wherepossibleitisadvisablethatthedifferenceintemperaturebetweenthecontainerandthewateriswithinthe rangeof 5Ctoavoidthepossibilityofextrastressbeingintroducedintothec
23、ontainerpriortothetest. 3.2.3.2 Useoneofthefollowingtestprocedures,dependingonthepurposeofthetest: a) Passtest Applytheinternaltestpressuretothepredeterminedlevelandholditconstantfor(602)s,orfora differentperiod,providedthattheapparatushasthemeansforcorrectingthepressurevaluestothose whichwouldbeobt
24、ainedfora60stest. b)Progressive test Continuethetestdescribedina),byincreasingthepressureinincrementsof1baror2bar(0,1MPaor0,2 MPa),until50%or/and100%ofcontainersarebroken. NOTE Insomecommerciallyavailablemachines,incrementsare1barforuseupto18barand2barabove18bar.ENISO7458:2004(E) 5 3.2.4 Testreport
25、Thetestreportshallincludethefollowing: a) referencetothisEuropeanStandard, b) samplesizeandsamplingmethod, c) numberofcontainersfromeachmouldincludedinthesample, d) typeoftest,i.e.passtest3.2.3.2a)orprogressivetest3.2.3.2b), e) testresults: 1) forthepasstest,inaccordancewith3.2.3.2a): thepressureuse
26、dandthenumberofcontainersthatfailedinthetest,withtherespectivepressures atwhichtheyfailed 2) fortheprogressivetest,inaccordancewith3.2.3.2b): thepressureatwhichfirstfailureoccurredandthenumberofcontainersthatfailedatthatpressure thepressurerequiredtobreakthepredeterminedpercentageofthesample,express
27、edtothenearest 0,1bar(0,01MPa), themeanbreakingpressureandthestandarddeviation f) dateoftest, g)location, h) signatureofresponsibleperson. 3.3MethodB 3.3.1General Applicationofinternalpressureincreasingatapredeterminedconstantrate. 3.3.2Apparatus Theapparatusshallcomplywiththefollowingprinciples: a)
28、 Thecontainertobetestedshallbeheldinsuchamannerthatitissuspendedbythefinish. b) Thereshallbearesilientsealbetweenthesealingsurfaceandthepressureheadinordertoretainthe pressurizingmediumduringthetest. c)Thereshallbeameansofapplyingfluidpressure,increasingatarateof(5,8 1) bar s 1 = (0,580,1)MPa s 1 ,u
29、ntilthecontainerfailsorapredeterminedlevelisreached.Theactualrateofincrease ofpressureshallbereproducibleto2%. d) TheapparatusshallincludeameansofindicatingthepressureIevelatwhichthecontainerfailed,orthe maximumpressurereachedduringthetest. e) Theapparatusshallincludeameansofindicatingtherelationshi
30、pbetweentheconstantrateandfixed durationtest.ENSO7458:2004(E) 6 EXAMPLE Incaseofthe“RampPressureTest“apparatus,therelationshipbetweentheactualpressureandthe60s pressureisgivenby K P P 60 R + = 38 , 1 (1) Where PR istheactualpressure P60 isthe“SixtySecond(60s)“pressure(see3.2.3.2a) K =0,1783(pressure
31、measuredinMPa) =1,783(pressuremeasuredinbar) =25,9(pressuremeasuredinpsi) 3.3.3Procedure 3.3.3.1 Fillthecontainerswithwater. NOTE Wherepossibleitisadvisablethatthedifferenceintemperaturebetweenthecontainerandthewateriswithinthe rangeof 5Ctoavoidthepossibilityofextrastressbeingintroducedintothecontai
32、nerpriortothetest. 3.3.3.2 Useoneofthefollowingtestprocedures,dependingonthepurposeofthetest: a) Passtest lncreasetheinternaltestpressureatarateof(5,81)bar s 1 =(0,580,1)MPa s 1 ,untilapredetermined levelofpressurehasbeenreached. b) Testtodestruction Increasetheinternaltestpressureatarateof(5,81)bar
33、 s 1 = (0,580,1)MPa s 1 untileachcontainer breaks. 3.3.4 Testreport Thetestreportshallincludethefollowing: a) referencetothisEuropeanStandard, b) samplesizeandsamplingmethod, c) numberofcontainersfromeachmouldincludedinthesample, d) typeoftest,i.e.passtest3.3.3.2a)ortesttodestruction3.3.3.2b), e) te
34、stresults: 1) forthepasstest,inaccordancewith3.3.3.2a): 60spressureandthenumberofcontainersthatfailedinthetest,withtherespectivepressuresat whichtheyfailed 2) forthetesttodestruction,inaccordancewith3.3.3.2b): 60spressureatwhichfirstfailureoccurredandthenumberofcontainersthatfailedatthatpressureENIS
35、O7458:2004(E) 7 60spressurerequiredtobreakthepredeterminedpercentageofthesample,expressedtothe nearestof0,1bar=0,01MPa themeanbreakingpressureandthestandarddeviation f) dateoftest, g)location, h) signatureofresponsibleperson. 4 Safetyrequirements Thistestproceduremaybeinjurioustohealthifadequateprec
36、autionsarenottakenbytheoperator.Testsshould becarriedoutinasafemannerasrecommended.BS EN ISO 7458:2004 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 view on standards in
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