1、BRITISH STANDARD BS EN 985:2001 Textile floor coverings Castor chair test The European Standard EN 985:2001 has the status of a British Standard ICS 59.080.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 985:2001 This British Standard, having been prepared under the di
2、rection of the Sector Policy and Strategy Committee for Materials and Chemicals, was published under the authority of the Standards Policy and Strategy Committee on 31 August 2001 BSI 31 August 2001 ISBN 0 580 37749 0 National foreword This British Standard is the official English language version o
3、f EN 985:2001. It supersedes BS EN 985:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/3, Textile floor coverings, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secret
4、ary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards
5、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 application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to un
6、derstand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front c
7、over, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENOR
8、M EN985 July2001 ICS50.080.60 SupersedesEN985:1994 Englishversion TextilefloorcoveringsCastorchairtest RevtementsdesoltextilesEssailappareilroulettes TextileBodenbelgeStuhlrollenprfung ThisEuropeanStandardwasapprovedbyCENon2June2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhi
9、chstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English
10、,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Icel
11、and,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved
12、worldwideforCENnationalMembers. Ref.No.EN985:2001EEN985:2001(E) 2 Foreword ThisEuropeanStandardhasbeenpreparedbyTechnicalCommitteeCEN/TC134“Resilientandtextilefloor coverings“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardreplacesEN985:1994. ThisEuropeanStandardshallbegiventhestatusofanation
13、alstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyJanuary2002,andconflictingnationalstandardsshallbewithdrawn atthelatestbyJanuary2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStan
14、dard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal, Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN985:2001(E) 3 1Scope ThisEuropeanStandardspecifiesthreemethodsforassessingthebehaviouroftextilefloorcoveringsunderthe
15、movementofacastorchair. TestA:Assessmentofthewearbehaviouroftextilefloorcoveringsunderthecastorchair, TestB:Assessmentofthechangeincolour(glossing)ofneedledfloorcoveringswithoutapile, TestC:Assessmentofthegeneralstructuralintegrityoftextilefloorcoverings. 2Normativereferences ThisEuropeanStandardinc
16、orporatesbydatedorundatedreferences,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsare listedhereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublications applytothisEuropeanStandardonlywhenincorporatedinitb
17、yamendmentorrevision.Forundatedreferences thelatesteditionofthepublicationreferredtoapplies(includingamendments). EN20139, TextilesStandardatmospheresforconditioningandtesting(ISO139:1973). ISO1957, MachinemadetextilefloorcoveringsSamplingandcuttingspecimensforphysicaltests. EN1471, Textilefloorcove
18、ringsAssessmentofchangesinappearance. EN12529:1998, CastorsandwheelsCastorsforfurnitureCastorsforswivelchairsRequirements. ISO2424, TextilefloorcoveringsVocabulary. 3Termsanddefinitions ForthepurposesofthisstandardthetermsanddefinitionsgiveninISO2424apply. 4Principle Atextilefloorcoveringissubmitted
19、foraprescribednumberofcyclestotheactionofthreecastorswhich produceaneccentricturningmotion. Attheendofeachtest: thechangeinappearanceinaccordancewithEN1471isassessedafter5000cyclesand25000cycles (TestA); thechangeincolourbymeansofgreyscalesisassessedafter750cycles(TestB); theextentofdeteriorationoft
20、hespecimenisassessedafter10000or25000cycles (TestC). 5Testapparatus(Figure1) 5.1Circular,rotatingtestingplatform, ofdiameter(8005)mmonwhichthespecimensupportplateis mounted.Therotationspeedofthetestingplatformshallbe(191)r/minandthedirectionofrotationshall reverseat(180+20)sintervals.Thestoptimebetw
21、eenreversalsshallbe(51)s.EN985:2001(E) 4 5.2Castorassembly, comprisingaverticalshaftsetinabearingandaplate,R,onwhichthecastorsare mounted.Thiscastorassemblyisoffsetatadistanceof(1981)mmfromthecentreofthetestingplatform. Thethreecastors( 5.3)arearrangedconcentricallyat120 intervalsaroundthecentreofth
22、eplateandata distanceof(1301)mmfromthecentreoftheplate.Theyarefreetorotatesothattheyfollowtherotationof thecastorassembly.Therotationspeedofthecastorassemblyshallbe(501)r/min. Thecastorassemblywhenloadedhasamassof(901)kgthatisdividedequallyoverthethreecastors. Thedistanceunderloadbetweenthecastorass
23、emblyplateRandtheload/driveplateC(castorplateclearance) shallbemorethan3mmatthepointofmeasurement(seeFigure1). NOTE1Theareaofstressproducedonthetestspecimenisdeterminedbythedistancebetweentheaxesofrevolutionof thecastorchairassemblyandofthetestingplatformandalsobythedistanceofthecastorsfromthecentre
24、oftheplate.T he stressedareaisapproximately0,3m 2 NOTE2Therelationshipbetweentherotationspeedofthetestingplatformandthatofthecastorassemblycausesasharp reversemovementofthecastorsneartheedgesofthestressedarea. 5.3Castorset, comprisingthreecastorsasillustratedinFigure2withthefollowingdimensions: diam
25、eterofcastors (50 2)mm widthofcastors: (20 2)mm radiusofcurvatureofcastortread: (130 5)mm crankdistance: (32 2)mm Thedistancebetweenanytwocastormountingsshallbe(225 5)mm. ThecastorsshallbeTypeHinaccordancewithEN12529:1998.Thecastortreadsshallbemadefrom polyamidehavinghardnessbetween90and100Shorescal
26、eAunitsandshallbereplacedafterevery2million cyclesofthetestingplatform,orearlierifnecessary. 5.4Liftingdevice, toraisethecastorassemblyabovethetestingplatformwhentheapparatusisstationary. 5.5Cyclecounter, forsettingthenumberofcyclesofthetestingplatform. 5.6Suctiondevice, withaflowrateof25to30l/smoun
27、tedovertheentirewidthofthestressedpartofthe specimen,theheightofthisdevicebeingadjustable. 5.7Specimensupport, comprisingacircularsheetofrigidplastic(e.g.polymethylmethacrylate)of (7 2)mmthicknessanddiameter(800 5)mm.Thesupportisplacedonthetestingplatformwiththeholesin thesupportlocatingonstudsonthe
28、testingplatformtopreventslippage. 5.8Metalclampingring, ofheight(10 2)mm,externaldiameter(700 5)mmandinternal diameter(680 5)mm,toholdlooselaidtiles,orcarpetoveranunderlay,inpositionduringthetest. 5.9Brushvacuumcleaner, withrotatingbrush,drivenbyanindependentmotor. 6Samplingandpreparationofspecimens
29、 6.1SamplethematerialtobetestedaccordingtoISO1957. 6.2Preparethespecimensasfollows. 6.2.1 TestA Cuteitherthreesemicirclesorsixquadrantsofradius(350 3)mmensuringthattheedgesareparallelto and/oratrightanglestothedirectionofmanufacture.CutalsoareferencespecimenwithdimensionsofEN985:2001(E) 5 (200 2)mmx
30、(200 2)mm.Inallcasesmarkthespecimenswiththedirectionofmanufacture. Iftestingonlyonetextilefloorcoveringathirdspecimenisrequiredtofillthegapleftbyremovalofthe5000 cyclespecimen(see 8.4.2). 6.2.2TestB Ifpossible,testdifferentbatches/colourwaysduringeachtest. Cuteitheronesemicircleoronequadrantofradius
31、(350 3)mmfromeachbatch/colour.Cutalsoareference specimen,withdimensionsof(200 2)mmby(200 2)mm.Inallcasesmarkthespecimenswiththe directionofmanufacture. Iftestingonlyonetextilefloorcovering,specimensarerequiredtofillinthegaps. 6.2.3 TestC Cuttwosemicirclesfromthesample. Iftestingonlyonetextilefloorco
32、veringathirdspecimenisrequiredtofillthegapleftbyremovalofthe10000 cyclespecimen(see 8.8.1). 7Atmosphereforconditioningandtesting ConditionandtestthespecimensinthestandardatmospherefortestingtextilesasdefinedinEN20139,i.e. relativehumidity(65 2)%andtemperature(20 2) O C,foratleast24hours. 8Procedure
33、8.1Mountingofthespecimens Mounttwosemicircularspecimensorfourquadrantspecimensonthespecimensupport( 5.7)usingdouble sidedadhesivetapeoradhesivenetapplyingthetapeornetoverthewholeareaofthespecimensupportplate. Ensurethattherearenogapsbetweenthespecimensandtoptapetopreventmovementordelamination. Iftes
34、tingoveranunderlayortestinglooselaytiles,usetheclampingring( 5.8)toholdthespecimensinplace. Priortotestingcleanthespecimenswiththeuprightvacuumcleaner( 5.9),makingfourforwardandbackward passesandensuringthatalltheareaiscovered. 8.2Verificationofthecastors Checkthatthecastorsrotateandswivelfreelyanda
35、refreeoffibreremainingfromprevioustests. 8.3Preparingtheapparatus 8.3.1Placethespecimensupport(onwhichthetestspecimensaremounted)ontothetestingplatform,ensuring thattheholesinthespecimensupportengagethestudsonthetestingplatform. 8.3.2Lowerthecastorsslowlyintocontactwiththetestspecimens. 8.3.3Placeth
36、esuctiondevice (5.6)ascloseaspossibletothespecimensbutwithouttouching. StartthesuctiondevicesothatitremainsrunningthroughoutthetestexceptforTestC. 8.4TestAstage1 8.4.1Setthenumberofcyclesonthecounter( 5.5)to5000andstartthemachine.EN985:2001(E) 6 8.4.2Whenthemachinestopsafter5000cyclesofthetestingpla
37、tforminspectthespecimen(s)forany delaminationandthenremovethespecimens)intendedforassessmentafter5000cycles. NOTEInspectionpriortoremovingfromtheplateisimportant,asthematerialcanbecomedamagedjustbytheactionof removingthespecimen. 8.4.3 Brushvacuumthe5000cyclespecimen(s)immediatelyonremovalfromthemac
38、hine. Brushfourtimesbothwithandagainstpileleanusingaslowmovementandendinginthedirectionofpilelean. 8.4.4Conditionthe5000cyclespecimen(s)inthestandardatmospherefortestingtextiles(clause7)foratleast 24hoursbeforeassessing,layingthespecimen(s)flatwithusesurfaceuppermost,orhangingthemfreely. 8.5TestASta
39、ge2 8.5.1Mountunwornspecimensofthefloorcoveringonthespecimensupportinplaceoftheremoved5000 cyclespecimens. 8.5.2Repeat8.3.1to8.3.3,setthenumberofcyclesonthecounter( 5.5)to20000andstartthemachine. 8.5.3Whenthemachinestops,inspectthespecimen(s)foranydelamination,removethespecimens,discard the20000cycl
40、especimenandproceedwiththe25000cyclespecimen(s). 8.5.4Brushvacuumthe25000cyclespecimen(s)immediatelyonremovalfromthemachine. Brushfourtimesbothwithandagainstpileleanusingaslowmovementandendinginthedirectionofpilelean. 8.5.5Conditionthe25000cyclespecimen(s)inthestandardatmospherefortestingtextiles(cl
41、ause7)forat least24hoursbeforeassessing,layingthespecimen(s)flatwithusesurfaceuppermost,orhangingthemfreely. 8.6TestB 8.6.1Setthenumberofcyclesonthecounter( 5.5)to750andstartthemachine. 8.6.2Whenthemachinestopsinspectthespecimen(s)foranydelaminationandremovethespecimen(s). 8.6.3Conditionthespecimen(
42、s)inthestandardatmospherefortestingtextiles(clause7)foratleast24hours beforeassessing,layingthespecimen(s)flatwithusesurfaceuppermost,orhangingthemfreely. 8.7TestCStage1 8.7.1Setthenumberofcyclesonthecounter(5.5)to10000andstartthemachinethesuctiondevicebeingoff. 8.7.2Whenthemachinestopsafter10000cyc
43、lesofthetestingplatform,inspectthespecimen(s)forany delaminationandremovethespecimen(s)intendedforassessment. 8.7.3Conditionthe10000cyclespecimen(s)inthestandardatmospherefortestingtextiles(clause7)forat least24hoursbeforeassessing,layingthespecimen(s)flatwithusesurfaceuppermost,orhangingthemfreely.
