Ukubumba ukuvuthela yinkqubo esebenza kakuhle kakhulu yokwenza iimveliso zeplastiki ezingenanto. Kubandakanya ukubeka i-parison yeplastiki efudumeleyo kwi-mold kwaye uyifake umoya usebenzisa umoya ocinezelweyo. Isetyenziswa kakhulu kumacandelo okupakisha, eemoto, ezonyango, nakumashishini. Olona ncedo lwayo lusekukwazini kwayo ukuvelisa iinxalenye ezinezakhiwo ezintsonkothileyo, ubukhulu bodonga obufanayo, kunye nobunzima obukhaphukhaphu, ngelixa ulungelelanisa iindleko{3}}ukusebenza kunye nokukaleka.
Ngokusekwe kwimigaqo yobugcisa, ukubumba ukuvuthela kwahlulwe ngokweendidi ezintathu: ukubumba ukuvuthela kwe-extrusion, ukubunjwa kwesitofu sokuvuthela, kunye nokubumba isivuthelo esolula. I-extrusion blow molding ifanelekile kwizikhongozeli ezinkulu kunye neendawo ezingenanto, ngelixa ukubumba ukuvuthela kwenaliti kugqwesa ngokuchaneka okuphezulu kunye nokungaguquguquki kwaye kudla ngokusetyenziswa kwizicelo ezifuna ukuchaneka, okufana neebhotile zamayeza. Ukubumba isivuthelo esolulayo kwandisa amandla ezinto ngokusebenzisa ukolula kwe-biaxial, ukongeza ngakumbi iipropathi zoomatshini zemveliso egqityiweyo. Ukuguquguquka kwezi nkqubo kwenza ukuba iindawo ezibunjiweyo zikwazi ukuhlangabezana neemfuno zoyilo ezahlukeneyo, ezinjengokumelana nemichiza yeetanki zamafutha emoto, ubume obukhaphukhaphu bezixhobo zemidlalo, okanye iimfuno zokutywinwa zokupakishwa kwemveliso yabathengi.
Ukukhetha izinto eziphathekayo kubalulekile ekusebenzeni kweendawo ezibunjiweyo zokuvuthela. I-Polyethylene (PE), i-polypropylene (PP), kunye ne-polyethylene terephthalate (i-PET) zizinto eziqhelekileyo eziqhelekileyo, ezihambelana nezicelo ezifana nokumelana nokubola, ukuqina okuphezulu, kunye nokupakishwa okucacileyo, ngokulandelanayo. Kwiminyaka yakutshanje, ukwaziswa kweeplastiki zobunjineli ezifana ne-polycarbonate (PC) iye yandisa ukusetyenziswa kokuvuthela{2}}kweendawo ezibunjiweyo kwindawo{3}}zobushushu obuphezulu okanye{4}}usetyenziso lwamandla aphezulu. Ngaphaya koko, ngokudityaniswa kunye nokuguqulwa okanye ukongezwa kweeretardants kunye ne-UV{6}}izongezo ezinganyangekiyo, ukusebenza okukhethekileyo kwemathiriyeli kunokwandiswa ngakumbi.
Ixabiso leenxalenye{0} ezibunjiweyo zokuvuthela alikho nje ekusebenzeni ngokufanelekileyo kodwa nakwigalelo lazo kuphuhliso oluzinzileyo. Uyilo olulula lunciphisa ngokuthe ngqo ukusetyenziswa kwamandla othutho, ngelixa ukusetyenziswa okubanzi kweeplastiki ezinokuphinda zisetyenziswe kwakhona kulungelelaniswa nendlela eya kuqoqosho olusetyhula. Ngokudityaniswa kobuchwephesha bobuchwephesha bedijithali kunye neenkqubo zokulawula ubushushu obukrelekrele, inkqubo yokubumba ivuthululela ukuchaneka okuphezulu kunye namazinga asezantsi enkunkuma, ngokuqhubekayo ibonelela ngeendleko{3}}izisombululo ezisebenzayo nezintsha kumashishini ahlukeneyo.
