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    ABOUT US

    Nanjing Juli Chemical Machinery Co., Ltd
    • 2005

      /Year

      Founded in 2005

    • 1600

      Million yuan

      Registered capital of 16 million yuan

    • 20000

      Covers an area of more than 20,000 square meters

    Nanjing Juli Chemical Machinery Co., Ltd. is a company specializing in the development of plastic polymer compounding and modifying equipment with co-rotating twin-screw extruder as the core, as well as the technical development of related processes and engineering fields, as well as the scientific research, development and production of auxiliary equipment Manufacturer company. There are many senior engineers, senior experts and experienced on-site commissioning engineers who have been engaged in research and production in the twin-screw field (formerly Coperion Keya, Ganhua Machinery, South Rubber and Plastics) for many years. The registered capital is 16 million yuan.

    Nanjing Juli Chemical Machinery Co., Ltd

    Top Ten Chinese Twin Screw Extruder Companies

    Top Ten Enterprises in China's Modified Plastics Industry

    PROJECTS

    南通環洋新型建材有限公司
    pro

    Twin Screw Extruder

    企業理念

    Sheet Extruder

    企業理念

    Single Screw Extruder

    pro

    Degradable Material Extrusion

    企業理念

    Twin Screw Underwater Pelletizing

    企業理念

    Screw Elements

    PROJECTS

    Nanjing Juli Chemical Machinery Co., Ltd

    Establish a brand and enter the world

    NEWS CENTER

    Nanjing Juli Chemical Machinery Co., Ltd

    About the structure process analysis of twin screw extruder

    Next,theeditorofJuliwillgiveyouabriefintroductionaboutthestructureandprocessanalysisofthetwin-screwextruder:??1.Plasticizingarea??Theplasticizingzoneistoheattheinjectedresintoformamoltenstate.Theconditionssuchastheheatingtemperatureandtimeinthisregionarenotparticularlylimitedaslongasthefluoropolymerhavingaspecificunstableterminalgroupisinamoltenstate.Inthelatterhalfoftheplasticizationzone,itispreferabletoprovidedevolatilizationholestoremoveatleastapartofvolatilecomponentsundernormalpressureorreducedpressure.Then,thepartialpressureofvolatilecomponentsinthestabilizationregiondescribedlatercanbereduced,andthestabilizationtreatmentcanbeeffectivelypromoted.??2.Stabilizationtreatmentarea??ThestabilizationzoneistomeltandkneadandconvertspecificunstableendgroupsintoaCF2H.Thestabilizationtreatmentareaispreferablyformedbyusingakneadingdiscwithoutpropulsion.Here,melt-kneadingiscarriedoutinthepresenceofwaterandoxygen.Itcandirectlyintroducepurewater,ionexchangewater,etc.orwatervapor;itcanalsobeaccompaniedbythefluoropolymertobetreated.Theamountofwateraddedisthesameasthenumberofunstableterminalgroups,butitisactuallypreferabletosupplyanexcessamount,forexample,atleast10timestheamount.Thepressureinthestabilizationzoneisgenerallycontrolledat0.2~10MPa,andthesettemperatureiscontrolledat280~430℃.Thetimetomaintainpressurizationisusuallylessthan10minutes.??Accordingtotheprincipleoftheextrudertoremoveunstableendgroups,themelt-kneadinginthestabilizationzoneispreferablycarriedoutinthepresenceofoxygeninadditiontothepresenceofwater.Airisusuallyusedintermsofeconomy.Inthepresenceofoxygen,thecarbongeneratedbythemoltenkneadedproductisalsoburned,whichcaninhibitthecoloringofthefluoropolymer.Oxygenisaninertgastotheunstableterminalgroupscarboxylandfluorinatedacylgroups.Duringtheprocessofmeltingandkneading,itcanimprovethedevolatilizationefficiencyofvolatilecomponents.??Three,devolatilizationarea??Thedevolatilizationzoneremoveshigh-temperaturevolatilecomponentsgeneratedbythedecompositionofspecificunstableterminalgroups.Theabsolutepressurevariesaccordingtothemoltenstateofthemoltenkneadedproductandtheoperatingconditionsofthescrewofthekneader.Generally,thepressureisreducedtothepointwherethemoltenkneadedproductdoesnotintrudeintotheexhaustnozzle.Itcanbe0.01to0.1MPa,andthetemperatureiscontrolledat25O~Claughataround.??Inthepresenceofacertainamountofwaterandoxygen,FEPextrudingthroughatwin-screwextrudercaneffectivelyremovetheunstableterminalgroupsofFEP.SimplifiestheprocessingprocessofFEPunstableendgroupsandsavesproductioncosts.Whentheobtainedstabilizedpolymerismelt-formed,nobubblesorvoidsaregeneratedinthefinishedproduct,anditisnotcolored.?Formoreinformationabouttwinscrewextruders,pleasevisithttp://www.njjl.com/ About the structure process analysis of twin screw extruder

    CONTACT INFORMATION

    No. 77 Tangtong Road / No. 9 Boguang Road, Hushu Town, Jiangning District, Nanjing City

    OFFICIAL ACCOUNTS

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