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1、DSMEngineeringPlastics–TechnicalGuide®ArnitelTPE-ERecommendationsforInjectionMoldingMachineryStandardscrewplungertypeinjectionmoldingmachinesmustbeused.Themachinesizeandcylinderdiametershouldbesuchthattheproductweightiswithinarangeofapproximately40to70%ofthemaximumshotcapa
2、city.Screw:Standardthree-zonescrewswithaL/Dratiofrom17to23andathreaddepthratioofabout1:2yieldexcellentresults.Anonreturnvalveattheendofthescrewisrecommended.®ScrewsforprocessingPVCmustnotbeusedforArnitel.Nozzle:Itisrecommendedtouseashortnozzleandawidebore(3mmormore)tominim
3、izefrictionalheatingandpressurelosses.Hopper:Thehoppershouldbeequippedwithatightly-closinglidwhichshouldbekeptclosedduringprocessingtokeepthegranulesdryandfreefromdust.ProcessingConditionsCylindertemperatures:®Polymertemperaturesof230°C(ArnitelEM400andEM460)and260°C(EL550,
4、EL630andEL740)arethemaximumvaluesforlongerresidencetimesinthecylinder.Residencetimesmustbekeptaslowaspossible.MoldTemperature:Forthinwalledproductsamoldtemperatureof50°Cisrecommended.Forthickwalledproducts,20°Ccanbemaintained.Highermoldtemperaturefacilitatesflowatthecostof
5、coolingtime.®InjectionPressure:Mustbehighenoughformoldfilling.ThetrendofflowlengthwithhardnessforArnitel®ELandArnitelPLgradesfollowsaninverserelationforthesameinjectionpressure,whereasgradesfor®ArnitelEMfollowadirectrelationship.Date:10.11.20031Disclaimer:Allinformationsup
6、pliedbyoronbehalfofDSMinrelationtoitsproducts,whetherinthenatureofdata,recommendationsorotherwise,issupportedbyresearchand,ingoodfaith,believedreliable,butDSMassumesnoliabilityandmakesnowarrantiesofanykind,expressorimplied,including,butnotlimitedto,thoseofTITLE,MERCHANTABI
7、LITY,FITNESSFORAPARTICULARPURPOSEorNON-INFRINGEMENToranywarrantyarisingfromacourseofdealing,usage,ortradepracticewhatsoeverinrespectofapplicationprocessingorusemadeoftheaforementionedinformationorproduct.Theuserassumesallresponsibilityfortheuseofallinformationprovidedandsh
8、allverifyqualityandotherpropertiesoranyconsequencefromtheuseofallsuchinformation.DSMEngin
