Zombili lezi zinqubo zisetshenziselwa ukwenza izingxenye ezingenalutho, ezingenamthungo ngama-polymer we-thermoplastic.Ukubumba okujikelezayo nakho kungasetshenziselwa ama-thermosets.Izingxenye zihluka ngosayizi ukusuka emabhodleleni epulasitiki amancane angu-5 ml (0.15 oz) kuphela kuya emigqomo emikhulu yokugcina engu-38,000 l (10,000 gal) umthamo.Nakuba lezi zinqubo ezimbili zincintisana ezimeni ezithile, ngokuvamile zithole ezazo izindawo.I-Blow molding ifaneleka kakhulu ekukhiqizeni ngobuningi beziqukathi ezincane ezilahlwayo, kuyilapho ukubumba okujikelezayo kuthanda izimo ezinkulu ezingenalutho.
I-Blow molding inqubo yokubumba lapho ukucindezela komoya kusetshenziswa khona ukufutha ipulasitiki ethambile ibe isikhunta.Kuyinqubo ebalulekile yezimboni yokwenza izingxenye zepulasitiki ezingenalutho ezinezindonga ezincane, njengamabhodlela neziqukathi ezifanayo.Njengoba eziningi zalezi zinto zisetshenziselwa iziphuzo zabathengi ezimakethe ezinkulu, ukukhiqizwa kuvame ukuhlelwa ngamanani aphezulu kakhulu.Ubuchwepheshe bubolekwa embonini yengilazi lapho amapulasitiki ancintisana nawo emakethe yamabhodlela alahlwayo noma agaywa kabusha.
I-Extrusion Blow Molding.Leli fomu lokubumba igalelo liqukethe umjikelezo oboniswe ngezansi.Ezimweni eziningi, inqubo ihlelwa njengomsebenzi wokukhiqiza ophezulu kakhulu wokwenza amabhodlela epulasitiki.Ukulandelana kuyazenzakalela futhi kuvame ukuhlanganiswa nemisebenzi engezansi njengokugcwalisa ibhodlela nokulebula.Ngokuvamile kuyisidingo ukuthi isiqukathi esiphephethwa umoya siqine, futhi ukuqina kuncike ekugqineni kodonga phakathi kwezinye izici.
Umjovo Blow Molding.Kule nqubo, i-parison yokuqala ifakwe umjovo kunokuba ikhishwe.Ukulandelana okwenziwe lula kuvezwe ngezansi.Uma kuqhathaniswa neqhudelana layo elisuselwa ku-extrusion, inqubo yokubumba i-injection blow-molding inezinga eliphansi lokukhiqiza, elichaza ukuthi kungani isetshenziswa kancane kakhulu.
Enguqulweni yokubumba igalelo lomjovo, okubizwa ngokuthi i-stretch blow molding, induku ephephethayo inwebela phansi epharishini ebunjiwe yomjovo ngesikhathi sesinyathelo sesi-2, ngaleyo ndlela yelula ipulasitiki ethambile futhi idale ukucindezelwa okuhle kwe-polymer kunokubunjwa komjovo ojwayelekile noma ukubunjwa kwe-extrusion blow .Isakhiwo esiwumphumela siqinile kakhulu, sinokucaca okuphezulu kanye nokumelana nomthelela ongcono.Izinto ezisetshenziswa kakhulu ekubumbeni i-stretch blow yi-polyethylene terephthalate (PET), i-polyester enokungena okuphansi kakhulu futhi iqiniswa inqubo yokubumba i-stretch-blow-molding.Ukuhlanganiswa kwezakhiwo kwenza kube kuhle njengesiqukathi seziphuzo ze-carbonated.
Izinto zokwakha kanye nemikhiqizo.Ukubunjwa kwe-Blow kunqunyelwe kuma-thermoplastics.I-polyethylene i-polymer evame ukusetshenziswa kakhulu ekubumbeni ukuvuthela;ikakhulukazi, ukuminyana okuphezulu kanye ne-polyethylene yesisindo samangqamuzana aphezulu (i-HDPE ne-HMWPE).Ekuqhathaniseni izakhiwo zabo nalezo zokuminyana okuphansi kwe-PE uma kubhekwa imfuneko yokuqina komkhiqizo wokugcina, ukonga kakhulu ukusebenzisa lezi zinto ezibiza kakhulu ngoba izindonga zeziqukathi zingenziwa zibe mncane.Okunye ukubunjwa kokushaywa kwenziwa nge-polypropylene (PP), i-polyvinylchloride (PVC), ne-polyethylene terephthalate.
Iziqukathi ezilahlwayo zokupakisha izimpahla zabathengi eziwuketshezi ziyingxenye enkulu yemikhiqizo eyenziwe ngokubumba igalelo;kodwa akuzona kuphela imikhiqizo.Ezinye izinto zifaka imigqomo emikhulu yokuthumela (amagalani angama-55) oketshezi nezimpushana, amathangi amakhulu okugcina (amagalani angama-2000), amathangi kaphethiloli wezimoto, amathoyizi, kanye nezikebhe zamabhodi aseyili nezikebhe ezincane.Esimweni sokugcina, izikebhe ezimbili zesikebhe zenziwa ngokugoqa okukodwa bese zisikwa zibe izingqwembe ezimbili ezivulekile.
Isikhathi sokuthumela: Mar-15-2016