TPV1A90E1N、TPVDrying:drytreatmentisnotrequiredifthestorageisappropriate.Meltingtemperature:themeltingpointofPPis160-175C,thedecompositiontemperatureis350C,butthetemperaturesettingcannotexceed275Cduringtheinjectionprocessing.Thetemperatureofthemeltingsectionisbestat240.Moldtemperature:themoldtemperatureis50-90degreesC,forthehighrequirementofthesizeofthehighmoldtemperature,thecoretemperatureislowerthan5degreescentigrade.Injectionpressure:highinjectionpressure(1500-1800bar)andpressureholdingpressure(about80%oftheinjectionpressure).Atabout95%ofthefullstroke,thereinsurancepressureisused,andthelongerholdingtimeisused.Injectionspeed:inordertoreduceinternalstressanddeformation,highspeedinjectionshouldbechosen,butsomegradesofPPanddiearenotapplicable(bubblesandairlines).Lowvelocityinjectionandhighermoldtemperatureshouldbeusedifthesurfaceofthepatternhasabrightanddarkfringethatisspreadbythegate.Therunnerandgaterunnerdiameter:4-7mm,needlegatelength1-1.5mm,diameterupto0.7mm.Theshortertheedgeofthegate,theshorterthebetter,itisabout0.7mm,thedepthishalfofthewallthickness,thewidthistwotimesofthewallthickness,anditincreaseswiththelengthofthemeltflowinthediec***ity.Themoldmusth***egoodexhaustperformance,andtheexhaustportis0.025mm-0.038mmdeepand1.5mmthick.To***oidshrinkagemark,wemustuselargeandroundnozzleandcircularchannel,andthethicknessofreinforcingribis***all(forexample,50-60%ofwallthickness).TheproductsmadebyhomopolymerPParenotmorethan3mminthickness,otherwisetherewillbebubbles(thethickwallproductscanonlybePP).Backpressureofmeltadhesive:thebackpressureof5bargluecanbeused,andthebackpressureofthecolorpowdercanbeproperlyadjusted.Post-processingofproducts:inordertopreventtheshrinkageanddeformationofthepostcrystallizedproducts,theproductsareusuallysoakedinhotwater.applicationHouseholdElectricAppliances)