Kunezindlela eziningi zokuhlukanisa isikhunta sepulasitiki, futhi zingahlukaniswa ngezigaba ezilandelayo ngokwezindlela ezihlukene zokwenza nokucubungula izingxenye zepulasitiki:
Isikhunta sokujova sibizwa nangokuthi isikhunta sokujova.Inqubo yokubumba yalesi sikhunta ibonakala ngokubeka izinto zokusetshenziswa zepulasitiki emgqonyeni wokushisa womshini womjovo.Ipulasitiki iyashiswa futhi iyancibilika, futhi iqhutshwa yisikulufu noma i-plunger yomshini womjovo, ingena emgodini wesikhunta ngokusebenzisa i-nozzle kanye nesistimu yokuthulula isikhunta, futhi ipulasitiki yakheka emgodini wesikhunta ngokugcina ukushisa, ukubamba ingcindezi, futhi ukupholisa.Ngenxa yokuthi umshini wokushisa nokucindezela ungasebenza ngezigaba, ukubumba umjovo akukwazi nje ukubumba izingxenye zepulasitiki ezinobunjwa obuyinkimbinkimbi, kodwa futhi kube nokusebenza kahle kokukhiqiza okuphezulu kanye nekhwalithi enhle.Ngakho-ke, ukubunjwa komjovo kubala ingxenye enkulu ekubunjweni kwezingxenye zepulasitiki, futhi ukubunjwa komjovo kubalwa ngaphezu kwengxenye yokubumba kwepulasitiki.Umshini womjovo usetshenziselwa ikakhulukazi ukubunjwa kwe-thermoplastics.Eminyakeni yamuva nje, iye yasetshenziswa kancane kancane ekubumbeni amapulasitiki e-thermosetting.
Isikhunta sokucindezela sibizwa nangokuthi isikhunta sokucindezela noma isikhunta serabha.Isici senqubo yokubumba yalesi sikhunta ukuthi izinto zokusetshenziswa zepulasitiki zengezwa ngokuqondile emgodini wokubumba ovulekile, bese isikhunta sivaliwe.Ngemuva kokuthi ipulasitiki isesimweni esincibilikisiwe ngaphansi kwesenzo sokushisa nokucindezela, i-cavity igcwele ingcindezi ethile.Ngalesi sikhathi, ukwakheka kwamangqamuzana epulasitiki kwakhiqiza ukusabela kwe-chemical crosslinking, okwathi kancane kancane kwaqina futhi kwamiswa.Izibunjwa zokucindezelwa zisetshenziswa kakhulu kumapulasitiki e-thermosetting, futhi izingxenye zepulasitiki ezibunjiwe zisetshenziselwa kakhulu izindlu zokushintshwa kukagesi kanye nezidingo zansuku zonke.
Isikhunta sokudlulisa sibizwa nangokuthi isikhunta sokujova noma isikhunta se-extrusion.Inqubo yokubumba yalesi sikhunta ibonakala ngokuthi impahla eluhlaza yepulasitiki yengezwa ekamelweni lokudla elishisayo, bese ingcindezi isetshenziselwa izinto eziluhlaza zepulasitiki ekamelweni lokudla ngekholomu yokucindezela.Ipulasitiki iyancibilika ngaphansi kokushisa okuphezulu nokucindezela futhi ingena emgodini ngokusebenzisa uhlelo lokuthulula lwesikhunta.Ukuxhumanisa kwamakhemikhali kwenzeka futhi kancane kancane kuyaqina.Inqubo yokubumba yokudlulisa isetshenziswa kakhulu kumapulasitiki e-thermosetting, angakha izingxenye zepulasitiki eziyinkimbinkimbi.
I-Extrusion die nayo ibizwa nge-extruder head.Lesi sikhunta singaqhubeka sikhiqiza amapulasitiki anomumo ofanayo ophambanayo, njengamapayipi epulasitiki, izinduku namashidi.Idivayisi ye-extruder yokushisa nokucindezela iyafana neyomshini womjovo.Ipulasitiki encibilikisiwe idlula ekhanda lomshini ukuze yakhe ingxenye yepulasitiki ebunjiwe eqhubekayo, esebenza kahle kakhulu ekukhiqizeni.
Isikhathi sokuthumela: Aug-18-2021