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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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