Inqubo Yokukhiqiza Ishidi Le-PET

Impahla eluhlaza ye-PET sheet #pet sheet extrusion

Ishidi le-PET, njengamanye amapulasitiki, ukusebenza kuhlobene eduze nesisindo samangqamuzana, futhi i-viscosity yesici inquma isisindo samangqamuzana. Lapho i-viscosity yangaphakathi inkulu, izakhiwo ezingcono zomzimba namakhemikhali. kodwa uketshezi olubi, kubangela ubunzima bokubumba. I-viscosity ephansi ye-intrinsic iwukuthi, ukubi kakhulu kwezakhiwo ze-physicochemical namandla womthelela. Ngakho-ke, i-0.8dl/ G-0.9dL /g kufanele ikhethelwe i-viscosity yesici sefilimu esobala ye-PET.

Inqubo yokukhiqiza i-PET #extrusora de garrafa pet

Imishini yokukhiqiza eyinhloko ye-PET transparent sheet yilezi: umbhoshongo we-crystallization, umbhoshongo wokomisa, i-extruder, ikhanda lesikhunta, ikhalenda lama-roll amathathu kanye nekhoyili.

Inqubo yokukhiqiza imi kanje: crystallization impahla eluhlaza → drying → extrusion plasticizing → extrusion ukubumba → calendering ukubumba → amawindi imikhiqizo.

Isinyathelo sokuqala yi-crystallization. Izingcezu ze-PET ziyashiswa futhi zifakwe ngamakristalu embhoshongweni we-crystallization, ukuze ama-molecule ahlelwe kahle, bese izinga lokushisa lokuguqulwa kwengilazi yezingcezu liphakanyiswa, okuhloswe ngalo ukuvimbela ukunamathela ngesikhathi senqubo yokumisa nokuvimbela i-hopper. I-Crystallization ngokuvamile iyisinyathelo esibalulekile, esithatha imizuzu engu-30 ukuya emaminithini angu-90, futhi izinga lokushisa lingaphansi kuka-149°C.

Isinyathelo sesibili, somile. Ngenxa yokuwohloka kwe-hydrolytic ye-PET okubangelwa amanzi ngaphansi kwezimo eziphakeme zokushisa, ukunamathela kwayo okuyisici kuyancishiswa, futhi izakhiwo zayo ezingokomzimba, ikakhulukazi amandla omthelela, zizoncishiswa ngokuncipha kwesisindo samangqamuzana. Ngakho-ke, i-PET kumele yomiswe ngaphambi kokuncibilika nokukhishwa ukuze kuncishiswe umswakama, futhi okuqukethwe komswakama kufanele kube ngaphansi kuka-0.005%. Ngenxa yempahla ye-PET ye-hygroscopic, amanzi ajulile ebusweni bocezu azokwakha izibopho zamangqamuzana, futhi amanzi athile azoba khona ekujuleni kocezu, okuholela ebunzimeni bokomisa, ngakho-ke umoya oshisayo ojwayelekile awukwazi ukusetshenziswa. Iphuzu lamazolo omoya oshisayo liyadingeka ukuba libe ngaphansi kuka -40 ° C, futhi umoya oshisayo udluliswa ngesifunda esivaliwe ku-hopper yokomisa ukuze ukomiswe okuqhubekayo. #pe extruder machine.

Izithombe ezethulwa zivela efekthri yeklayenti le-JWELL Turkey ngoSepthemba. Ngemva kokulethwa embonini yakwa-Jwell eya embonini yekhasimende yaseTurkey, unjiniyela we-Jwell waya efekthri eyofaka umshini we-PET sheet extrusion wokufaka i-thermoforming. #rpet plastic recycling

Isinyathelo sesithathu ukubunjwa kwe-extrusion. I-PET iguqulwa ibe i-polymer enephuzu lokuncibilika elisobala ngemuva kokucwebezela nokomiswa, futhi izinga lokushisa lokubumba le-polymer liphezulu futhi ububanzi bokulawula izinga lokushisa buncane. Izinhlayiya ezingancibilikisiwe zihlukaniswa nokuncibilika kusetshenziswa isikulufu sokuvimbela esiklanyelwe ngokukhethekile i-polyester, esiza ukugcina inqubo ende yokugunda nokwandisa ukuphuma kwe-extruder. I-flexible die lip head ene-flow line stopper rod isetshenziswa, ikhanda liyi-conical, isiteshi sokugeleza esiqondile kanye nodebe olufayo olungaklwejwayo lukhombisa ukuthi ishidi kufanele libe lihle, i-heater yekhanda inomsebenzi wokukhipha amanzi nokuhlanza, ikhanda die igebe lip kufanele kuqinisekise ukufana okuhle, inhloko die lip igebe igebe umfaniswano kuthinta ngqo ukuphambuka ukushuba transverse we sheet kanye flatness we calendering. Izinga lokushisa elihambisana nendawo yangaphambili, indawo emaphakathi yefuselage, indawo engemuva ye-fuselage, i-net change nekhanda ngokulandelana 240°C-260°C, 265°C-275°C, 260°C- 265°C, 260°C-265°C, 255°C-265°C. #umshini weshidi lezilwane

Isinyathelo sesine: Pholisa bese usetha. Ngemuva kokuthi ukuncibilika kuphuma ekhanda ngqo ku-calender ye-roll-roll ye-calender nokupholisa, ibanga phakathi kwekhalenda le-roll-roll nekhanda ngokuvamile ligcinwa cishe ku-8cm, ngoba uma ibanga likhulu kakhulu, ishidi lilula. ukucwila kanye nemibimbi, okuholela ekuqedeni kahle kweshidi. Ngaphezu kwalokho, ngenxa yebanga elidlulele, ukupholisa kokukhishwa kokushisa kuhamba kancane futhi icrystallization imhlophe, engahambisani nekhalenda. Iyunithi ye-roller calendering emithathu iqukethe ama-roller amathathu angenhla, aphakathi naphansi, umugqa we-roller omaphakathi umisiwe, futhi i-axis yamarola amabili angenhla naphansi angahanjiswa phezulu naphansi lapho izinga lokushisa lendawo ye-roll liku-40°C. -50°C ngesikhathi sokupholisa ikhalenda. Ngokuhambisa phezulu naphansi eksisi ukuze ulungise igebe le-roll, izinga lokushisa lama-roller amabili angenhla naphansi lingu-30°C-60°C, 52°C-68°C, ngokulandelana, ama-roller amathathu kufanele aqinisekise ukuthi ijubane likhona. evumelanisiwe, ijubane kufanele libe ngaphezu kwejubane le-extrusion, inhloso yokunciphisa ukunwetshwa kwezinto ezishiya ukufa futhi zenze buthaka ukucindezeleka kwangaphakathi kweshidi, ukuze imibimbi iphele. I-PET izokhiqiza i-crystallization ebangeni le-100 ° C kuya ku-250 ° C, futhi izinga le-crystallization liyi-140 ° C kuya ku-180 ° C uma lishesha, ngakho-ke i-crystallization ingaqedwa ngemizuzwana embalwa. I-PET idinga ukudlula ngokushesha kule ndawo yokushisa kwecrystallization futhi ilawule ngokuqinile izinga lokushisa lama-roll amathathu.

Isinyathelo sesihlanu: Donsa futhi uhlehle. Ishidi liphuma ngerola yekhalenda bese lingena emshinini wokudonsa ngerola engumhlahlandlela. Idivayisi yokudonsa yakhiwe ngerola yerabha esebenzayo kanye nerola yerabha engenzi lutho, futhi ukucindezela kwamarola amabili ngokuyinhloko ukuvimbela ishidi ukuthi lingafinyeleli lapho ishidi lidonswa amarola amabili liwayisa emshinini wokusonta.