1、BRITISH STANDARD BS EN ISO 11897:2001 Packaging Sacks made from thermoplastic flexible film Tear propagation on edge folds (ISO 11897:1999) The European Standard EN ISO 11897:2001 has the status of a British Standard ICS 55.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS
2、 EN ISO 11897:2001 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2001 BSI 07-2001 ISBN 0 580 37740 7 National foreword This Bri
3、tish Standard is the official English language version of EN ISO 11897:2001. It is identical to ISO 11897:1999. The UK participation in its preparation was entrusted by Technical Committee PKW/5, Primary and transport packaging, to Subcommittee PKW/5/26, Packaging made from flexible material, which
4、has the responsibility to: A list of organizations represented on this subcommittee 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 Standards Catalogue unde
5、r the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct ap
6、plication. 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;
7、 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, the EN ISO foreword page, the ISO title page, page ii, pages 1 to 5, and a back cover. The BSI copyright date
8、displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO11897 June2001 ICS55.080 Englishversion PackagingSacksmadefromthermoplasticflexiblefilmTear propagationonedgefolds(ISO
9、11897:1999) EmballagesSacsfaitsdunfilmthermoplastiqueflexible Propagationdeladchiruresurlesplisdebordure(ISO 11897:1999) VerpackungSckeausthermoplastischerKunststofffolie WeiterreifestigkeitanFalzkanten(ISO11897:1999) ThisEuropeanStandardwasapprovedbyCENon11May2001. CENmembersareboundtocomplywiththe
10、CEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexis
11、tsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Fi
12、nland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitati
13、oninanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO11897:2001EgaPe2 INES:79811O1002 Foreword ThetextoftheInternationalStandardfromTechnicalCommitteeISO/TC122“Packaging“of theInternationalOrganizationforStandardization(ISO)hasbeentakenoverasaEuropean StandardbyTechnicalCommi
14、tteeCEN/TC261“Packaging“,thesecretariatofwhichisheld byAFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublication ofanidenticaltextorbyendorsement,atthelatestbyDecember2001,andconflicting nationalstandardsshallbewithdrawnatthelatestbyDecember2001. AccordingtotheCEN/CENEL
15、ECInternalRegulations,thenationalstandardsorganizations ofthefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium, CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy, Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnited Kingdom. Endo
16、rsementnotice ThetextoftheInternationalStandardISO11897:1999 hasbeenapprovedbyCENasa EuropeanStandardwithoutanymodification. ENISO11897:2001 A Referencenumbe r ISO11897:1999 (E) INTERNATIONAL STANDARD ISO 11897 Firstedition 19990301 PackagingSacksmadefrom thermoplasticflexiblefilmTear propagationone
17、dgefolds EmballagesSacsfaitsdunfilmthermoplastiqueflexiblePropagation deladchiruresurlesplisdebordure ENISO11897:2001 )E(9991:79811OSI OSI9991 Athgirllsserevr.deselnUstosiwrehescepfi,deitraponfothsicilbuptayamnoicudorperebturodezilideniynafomrroybna ymsnae,lecetrinoc .rehsilbupehtmorfgnitirwninoissi
18、mreptuohtiw,mliforcimdnagniypocotohpgnidulcni,lacinahcemro noitazidradnatSrofnoitazinagrOlanoitanretnI 65elatsopesaC 02evneG1121HC dnalreztiwS tenretnI hc.osiosi dnalreztiwSnidetnirP ii Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO me
19、mberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnongovernmental,in liaisonwithISO
20、,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirc
21、ulatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. InternationalStandardISO11897waspreparedbyTechnicalCommitteeISO/TC122, Packaging,Subcommittee SC2, Sacks. AnnexAisforinformationonly. ENISO11897:2001 DRADNATSLANOITANRETNI
22、 OSI )E(9991:79811OSI 1 PackagingSacksmadefromthermoplasticflexiblefilmTear propagationonedgefolds 1Scope ThisInternationalStandardspecifiesamethodforthedetermination,undergivenconditions,oftheresistanceto tearpropagationonanedgefoldofsacksmadefromthermoplasticflexiblefilm.Measurementsonfoldedand un
23、foldedfilmpermitthedeterminationoftheresidualresistanceinthefold. 2Normative references Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsof thisInternationalStandard.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthese publicationsdono
24、tapply.However,partiestoagreementsbasedonthisInternationalStandardareencouragedto investigatethepossibilityofapplyingthemostrecenteditionsofthenormativedocumentsindicatedbelow.For undatedreferences,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIEC maintainregistersofcurrentl
25、yvalidInternationalStandards. ISO5273:1995, PlasticsDeterminationoftensilepropertiesPart3:Testconditionsforfilmsandsheets. ISO2233:1994, PackagingCompletefilledtransportpackagesConditioningfortesting. ISO4593:1993, PlasticsFilmsandsheetingDeterminationofthicknessbymechanicalscanning. 3 Termsanddefin
26、itions ForthepurposesofthisInternationalStandard,thefollowingtermsanddefinitionsapply. 3.1 resistancetotearpropagation forcethatopposestearpropagationinatrapezoidalspecimenwithanincisionandaperforationasshownin Figure1 3.2 residualresistance percentagecalculatedbytheequation F fold / F film 100% whe
27、re ENISO11897:2001 ISO11897:1999()E OSI 2 F fold istheresistancetotearpropagationonthefoldofthefilm,innewtons; F film istheresistancetotearpropagationontheunfoldedfilm,innewtons. 4Specimens 4.1 Samplingandpreparationofthespecimens SpecimensasshowninFigure1shallbetakenfromthesectionoffilmorplasticssa
28、cktobetestedsuchthat,inthe caseofspecimensincludingafold,theincisioncoincideswiththeedgefold;specimensnotincludingafoldshallbe cutoutdirectlynexttotheedgefold,andpreferablyonbothsidesofit,sothattheincisionisparalleltothefold. Thespecimensshallbecutorpunchedsothattheedgesaresmoothandfreefromnotches.A
29、templateasshown inannexAisrecommendedforcuttingandmarkingofthespecimens. ForthemarkingasshowninFigure1,inkorothermediumshallbeusedthatdoesnotaffectthematerialunder test. Dimensionsinmillimetres Key 1 edgefold 2 marksforclamps 3 markforperforation 4 perforation 5 incision NOTE Thetransversemarkatthei
30、nnerendoftheincisionfacilitatesperforationofthespecimen. Figure1Specimenfordeterminationofresistancetotearpropagationontheedgefold 4.2 Numberofspecimens Wheneverpossible,fivespecimensshallbetakenforeachedgefoldandanotherfivefortheunfoldedspecimens. ENISO11897:2001 OSI )E(9991:79811OSI 3 5Test appara
31、tus 5.1 Tensiletestingmachine ,inaccordancewithISO5273,wheretheclampsshallallowthespecimenstobe heldatthemarks(seeFigure1).Theclampsshallspanawidthof100mm. 5.2 InstrumentformeasuringthethicknessofthespecimeninaccordancewithISO4593. 6Laboratory atmosphere Thetearpropagationtestshallbeperformedinstand
32、ardconditionGtemperature(23 2) o C,relativehumidity (50 5)%asspecifiedinISO2233:1994. 7Test procedure Conditionthespecimenfor24hinthestandardlaboratoryatmosphere(clause6). Measurethethicknessofthespecimens,closetothebaseoftheincision,onbothsidesoftheedgefoldusingthe methoddescribedinISO4593. Fixthes
33、pecimenintheupperandlowerclampsofthetensiletestingmachine.Themarksonthespecimenshall coincideasaccuratelyaspossiblewiththeedgesoftheclamps.Carryoutthetensiletestatatestspeedof 100mm/min 10%.Noteandrecordthemaximumforceattained. 8Evaluation Calculatethearithmeticmeanfromthehighestvaluesoftheforceinth
34、eindividualtests(calculateseparatemeans forthefoldedandunfoldedfilms).Fortheresistancetotearpropagation,calculatetheresidualresistancefromthe ratioofthetwovaluesobtained,i.e. F fold / F film 100%. 9Test report Thetestreportshallincludethefollowinginformation: a) areferencetothisInternationalStandard
35、; b) natureandidentificationofthetubularfilmortheplasticssacktested; c) dateonwhichthetubularfilmorsackandthespecimenswereproduced; d) numberofspecimens; e) priortreatmentofthespecimensandlaboratoryatmosphere; f) thicknessofthespecimens; g) resistancetotearpropagationoftheedgefold F fold innewtons;
36、h) resistancetotearpropagationofthefilm F film innewtons; i)residual resistance F fold / F film 100%; ENISO11897:2001 ISO11897:1999()E OSI 4 j) anypeculiarbehaviouronthepartofthespecimenduringthetest,e.g.theteardevelopmentandpatternofthe crack; k) anyconditionsdifferingfromthosedescribedinthisIntern
37、ationalStandard; l) dateoftest. ENISO11897:2001 OSI )E(9991:79811OSI 5 AnnexA (informative) Templateforpreparingthespecimens AnexampleofatemplateusedtopreparetestspecimensisshowninFigureA.1. Dimensionsinmillimetres FigureA.1Brasstemplateof2mmto3mmthicknessforpreparingthespecimens ENISO11897:2001 BS
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