Insert Molding

NTTF - SPGNTTF - SPG*SEMINAR ON INSERT MOLDINGBym.praveen

NTTF - SPGNTTF - SPG

NTTF - SPGNTTF - SPG*Types of insert moldingTypes of insertsAdvantages/disadvantagesApplicationsCase studyConclusion

Insert molding


NTTF - SPGNTTF - SPG*INTRODUCTIONInsert molding is the process of injecting polymer around another core material.Incorporated as a post molding operation


NTTF - SPGNTTF - SPG*Materials PP, PC, ABS, PA, Etc.,ProcessesInjection moldingCompression moldingGRP moldingExtrusion blow moldingSMC/DMC moldingRotational molding


NTTF - SPGNTTF - SPG*Types of insert molding

Molded in insertsPost molding inserts Plastic pre molded


NTTF - SPGNTTF - SPG*Molded in inserts


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NTTF - SPGNTTF - SPG*Post molding insertsCold press fitting (interference)Hot pressingUltrasonic insertionExpansion insertsSelf tapping insertsSwaging


NTTF - SPGNTTF - SPG*Cold press fittingHigh stress levelLow srength


NTTF - SPGNTTF - SPG*Hot pressingHeated insertShould be taperedShould have clearance at bottom


NTTF - SPGNTTF - SPG*Ultra sonic insertionTapered holeInserts are with undercuts


NTTF - SPGNTTF - SPG*Self threading insertsThread forming Thread cutting


NTTF - SPGNTTF - SPG*Expansion insertsExpansion inserts are usedHoop stress is more


NTTF - SPGNTTF - SPG*Swaging


NTTF - SPGNTTF - SPG*Plastic pre molded inserts


NTTF - SPGNTTF - SPG*Types of insertsMade up of brass, aluminium.Blind and open female threadsMale threadsBlind holes and open plain holesSpecial inserts (wires, plates, stampings)


NTTF - SPGNTTF - SPG*Female thread/plain insertsThrough Blind


NTTF - SPGNTTF - SPG*Male inserts


NTTF - SPGNTTF - SPG*Pre form inserts


NTTF - SPGNTTF - SPG*AdvantagesDurableDesign flexibilityGood holding powerFrequent disassembly/assembly is possibleTo provide a more precise bore to shaft fit


NTTF - SPGNTTF - SPG*DisadvantagesCycle timeRejected partsMold damageWeld linesMolded in stress


NTTF - SPGNTTF - SPG*ApplicationsAutomobile partsKeyboard KeysToysCircuits


NTTF - SPGNTTF - SPG*ExamplesElectrical ComponentsComputer HardwaresConnectorsMedical Equipments etc.,


NTTF - SPGNTTF - SPG*Case studyCircuit boardCarrier assemblyBrush holderPrimary terminal


NTTF - SPGNTTF - SPG*Other components


NTTF - SPGNTTF - SPG*ConclusionIn this seminar I have tried to give a brief introduction about the process, the various types of inserts available, location and loading of these inserts, its advantages and disadvantages. This gives the viewers a brief idea about the dos and donts and things to be taken care of while planning for the insert molding process.


NTTF - SPGNTTF - SPG*Thank you


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Insert Molding

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