MoldingProcessIntroduceDanielzuoProcessSelectionProcessingofEngineeringThermoplastics:InjectionMoldingExtrusionCompressionMoldingThermoformingBlowMoldingSecondaryOperationsComparisonsInjectionMoldingExtrusionCompressionMoldingThermoformingBlowMoldingSecondaryOperationsComparisonsProcessingofEngineeringThermoplastics:MaterialsProcessingProcessingProcessSelection-InjectionInjectionMoldingIntroductionInjectionmoldingmakespossiblemassproductionofintricate,highperformance,tighttolerancepartswithverylittlesecondarylaborandminimalwaste.ProcessSelection-InjectionHopperMoldClampExtruderBarrelwithHeatingBandsInjectionMoldingMachineProcessSelection-InjectionInjectionUnitTheReciprocatingScrewPelletsFeedSectionMeltProcessSelection-InjectionInjectionUnitTheReciprocatingScrewScrewPushesForward:InjectScrewSlidesBack:Feed,Melt(Filling)ThroatHeatingCoilsNozzleRotationInjectionForceBackPressureProcessSelection-InjectionInjectionUnitTheReciprocatingScrewScrewSlidesBack:Feed,MeltProcessSelection-InjectionInjectionUnitTheReciprocatingScrewReadyforInjectionProcessSelection-InjectionInjectionUnitTheReciprocatingScrewScrewPushesForward:InjectProcessSelection-InjectionFeedSection:Picksuppelletsandcarriesthemforward.TransitionSection:centralportionofthescrewwithreducedchanneldepthwhichcompressesplastic,eliminatingairbetweenpelletsandheatingandmeltingthem.MeteringSection:Finalplasticizingofmelt.ScrewDescriptionMeteringCompressionFeedProcessSelection-InjectionClampingSystemMoldMovablePlatenStationaryPlatenProvidesmotionandforcetoopenandclosemoldClampingForce:maximumholdingforceintonsthatamachinecanmaintainNozzleProcessSelection-InjectionStandardInjectionMoldingFastCycleTimesComplexPartsHighVolumeAestheticsAdvantagesDisadvantagesHighPressureProcessLimitedLargePartCapabilityHighToolingCostProcessSelection-InjectionCo-InjectionMoldingTwo-ComponentCo-InjectionMoldingCo-InjectionMoldingThreeComponentCo-InjectionMoldingCo-InjectionMoldingFourComponentCo-InjectionMoldingLEXANFOAMABLERESINBusinessMachineChassisStructuralFoamPartHighStrengthandRigidityinLargerPartsProcessSelection-InjectionMucell微孔發(fā)泡設(shè)備01Needlevalvenozzle02Gasinjector03MuCell?-plasticizingscrew(L/Dratio:22:1~24:1)04Homogenizingsectionforgas/meltmixture05Plasticsgranuleswithoutblowingagent0105030204Mucell微孔發(fā)泡工藝的塑化單元Mucell微孔發(fā)泡的產(chǎn)品表現(xiàn)形式StructuralFoamInjectionMoldingLargePartCapabilityLowPressureProcessHighStiffnesstoWeightRatioAdvantagesDisadvantagesLongerCycleTimeAestheticsBlendingRequiredInertGasBlowingAgentwithResinRelativetoStandardInjectionMoldingProcessSelection-InjectionStructuralFoamIncreasestheattainablewallthicknessGasexpandsinsideplasticizedmaterialtocreatefoamcoreSKINSKINCOREProcessSelection-InjectionGasAssistInjectionMoldingGasIntroducedAfterShortShottoPackoutPartImprovedAestheticsLowPressureProcessLowerPartWeightReducedCycleTimeAdvantagesDisadvantagesDefectonEveryPart

MoreComplexProcessHighToolingCostsLicensingCostsProcessSelection-InjectionGasAssistInjectionMoldedShippingContainerGasAssistMoldedRibInjectionMoldedRibGasCreatedCavityGasInjectionDefectSinkGasAssistInjectionMoldingProcessSelection-InjectionVicatSofteningpointMoldTemperatureProcesscloseinjectplasticizationcoolopentemperaturerisecloseinjectplasticizationcoolValveunithotwaterhotwaterhotwaterwaitwaitcoldwatercoldwaterHeat&CoolSystemProcessSelection-InjectionHeat&CoolEquipmentsValveUnitＴ1Ｔ2Ｔ3BoilerCoolingWater：ChannelPartCoolingChannelNeedspecialequipmentProcessSelection-InjectionAdvantageofHeat&CoolHeat&CoolGoodSurfaceFinishingwithFilledMaterialNoWeldlineIncreaseWeldstrengthEliminateJetting&FlowmarkPaintlessNostressIncreaseFlowabilityNotePCHandphoneDoormirrorDoorhandleBezelHousingHousingLensLightguideplateThinwallProcessSelection-InjectionGCompressionGoPresetGapInjectionTimePositionScrewClampf=0GoInjectionCompressionMoldingTimeScrewCoreCompressionPresetGapGf=0GoGoInjectionPositionSelectiveICMorCoiningFeatureProcessBenefitsFillingatalargereffectivethicknessCompressionassistedfillingandpackShortshotprocessLowershearLongerfilllengthLowerfillpressureLowerclampforceThinnerwallcapabilityBi-axialflowReductionofresidualstressesMaterialsavingsWeightreductionCycletimereductionBetterimpactpropertiesAdvantages<Warpage>Dimensionalstability>OpticalQualityWeldlinestrengthLowerCavityPressureIn-molddecoratingwith“softtouch”WhyUseICM?InjectionICMNozzlePressureNozzlePressureCavityPressureCavityPressureMoldPositionMoldPosition25k15.5kPSIPSI2.00.004InchTime(sec)Time(sec)0.0400.321kInch3.7kExperimentalCavityPressureProfileLexan141-1.5mmthicknessICMIMImprovedFlowinWheelCoversDecreaseMolded-inStressInjectionMoldingExtrusionCompressionMoldingThermoformingBlowMoldingSecondaryOperationsComparisonsProcessingofEngineeringThermoplastics:MaterialsProcessingProcessingProcessSelection-ExtrusionExtrusionExtrusionistheactofsqueezing,pressing,orpushingmaterialthroughadieinordertomakeashape.ProcessSelection-ExtrusionTheExtruderPelletsPartHeatingCoilsScrewDieContinuousProcessProcessSelection-ExtrusionTheProfileExtrusionDieContinuousFlowUniformCross-SectionProcessSelection-ExtrusionExtrudedThroughDieSupportedandCooledbyaStackofPolishingRollsCutandTrimmedOnceBelowGlassTransitionTemperatureSheetMaybeUsedinThermoformingandCompressionMoldingSheetExtrusionDieExtrusionCutawayViewRigidSheetRollStackProcessSelection-ExtrusionDieDieOtherRollStackOptionsProcessSelection-ExtrusionThermoplasticandGlassCompositeSheetGlassFiberMatGlassImpregnatedSheetSheetExtruderACombinationofGlassMatandThermoplasticResinHavingBothHighStiffnessandGoodImpactStrength.ProcessSelection-ExtrusionTheExtruderPelletsPartHeatingCoilsScrewDieLowToolingDieCostsLargePartCapabilityContinuousProcessAdvantagesDisadvantagesHighSet-upCostConstantCrossSectionLimitedComplexityProcessSelection-ExtrusionInjectionMoldingExtrusionCompressionMoldingThermoformingBlowMoldingSecondaryOperationsComparisonsProcessingofEngineeringThermoplastics:MaterialsProcessingProcessingProcessSelection-CompressionSoftenedsheetisplacedinamoldthenpressedintoshapebycompressiveforce.ProcessSelection-CompressionCompressionMolding231SoftSheetTrimmingCompressiveForcePartProcessSelection-CompressionCompressionMoldingLargePartCapabilityVariableWallThicknessUsesConventionalStampingEquipmentLowWarpageandDistortionAdvantagesDisadvantagesHighToolingCost

(CheaperthanInjectionMolding)SecondaryTrimmingAestheticsProcessSelection-CompressionCompressionMoldingInjectionMoldingExtrusionCompressionMoldingThermoformingBlowMoldingSecondaryOperationsComparisonsProcessingofEngineeringThermoplastics:MaterialsProcessingProcessingProcessSelection-ThermoformingVacuumFormingAtmosphericPressure(14.7psi)SoftenedSheetMoldPartVacuumProcessSelection-ThermoformingPressureFormingSoftenedSheetCompressedAirPressureFormedPart>>atmpressureProcessSelection-ThermoformingLowToolingCostLargePartCapabilityLowPressureProcessAdvantagesDisadvantagesLowPartComplexityLongerCycleTimesVacuumProcessSelection-ThermoformingThermoformingCompressedAirInjectionMoldingExtrusionCompressionMoldingThermoformingBlowMoldingSecondaryOperationsComparisonsProcessingofEngineeringThermoplastics:MaterialsProcessingProcessingDoubleWalled,HollowpartsProcessSelection–BlowPinchBarParisonDropPreBlowFullPressureReleaseMoldPart12345ProcessSelection–BlowBlowMoldingMandrelParisonControllingWallThicknessRaisedMandrelLoweredMandrelThinnerWallThickerWallProcessSelection–BlowDoubleWallGeometry(HollowParts)GoodStiffnesstoWeightRatioLowToolingCostLargePartCapabilityAdvantagesDisadvantagesLongerCycleTimesSecondaryTrimmingPurgingStart-upCostProcessSelection–BlowBlowMoldingInjectionMoldingExtrusionCompressionMoldingThermoformingBlowMoldingSecondaryOperationsCom