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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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