Amabhodlela eziphuzo amabhodlela e-PET ashintshiwe axutshwe ne-polyethylene naphthalate (PEN) noma amabhodlela ayinhlanganisela e-PET kanye ne-thermoplastic polyarylate.Ahlukaniswa njengamabhodlela ashisayo futhi angakwazi ukumelana nokushisa okungaphezu kuka-85 ° C;amabhodlela amanzi Amabhodlela abandayo, azikho izidingo zokumelana nokushisa.Ibhodlela elishisayo lifana nebhodlela elibandayo ekubumbeni.
1. Izisetshenziswa
Njengamanje, abakhiqizi bemishini yokubumba ye-PET esebenza ngokugcwele bangenisa ikakhulukazi bevela e-SIDEL yase-France, i-KRONES yaseJalimane, ne-Fujian Quanguan yase-China.Nakuba abakhiqizi behlukene, izimiso zabo zemishini ziyefana, futhi ngokuvamile zihlanganisa izingxenye ezinhlanu ezinkulu: isistimu yokuhlinzeka nge-billet, isistimu yokushisa, isistimu yokuvuthela amabhodlela, isistimu yokulawula kanye nemishini yokusiza.
2. Blow ukubumba inqubo
Inqubo yokubumba ibhodlela le-PET.
Izici ezibalulekile ezithinta inqubo yokubumba ibhodlela le-PET yi-preform, ukufudumeza, ukuvuthela kwangaphambili, isikhunta nendawo yokukhiqiza.
2.1 I-Preform
Lapho ulungiselela amabhodlela abunjwe ngokushaywa, ama-PET chips aqala ukubunjwa abe ama-preforms.Kudinga ukuthi ingxenye yezinto zesibili ezitholiwe ayikwazi ukuba phezulu kakhulu (ngaphansi kuka-5%), inani lezikhathi zokubuyisela alikwazi ukudlula kabili, futhi isisindo samangqamuzana kanye ne-viscosity ayikwazi ukuba phansi kakhulu (isisindo samangqamuzana 31000- 50000, i-viscosity yangaphakathi 0.78 -0.85cm3 / g).NgokoMthetho Kazwelonke Wokuphepha Kokudla, izinto zokubuyisela isibili ngeke zisetshenziselwe ukudla kanye nokupakishwa kwemithi.Ama-preform abunjwe ngomjovo angasetshenziswa kufika ku-24h.Ama-preform angazange asetshenziswe ngemva kokufudumeza kufanele agcinwe amahora angaphezu kwama-48 ukuze aphinde afudumale.Isikhathi sokugcina se-preforms asikwazi ukudlula izinyanga eziyisithupha.
Izinga le-preform lincike kakhulu kwikhwalithi yezinto ze-PET.Izinto ezivuvukala kalula futhi ezibunjwa kalula kufanele zikhethwe, futhi inqubo yokubumba efanelekile kufanele isetshenzwe.Ukuhlola kubonise ukuthi ama-preforms angenisiwe enziwe ngezinto ze-PET ezine-viscosity efanayo kulula ukushaya isikhunta kunezinto zasekhaya;kuyilapho iqoqo elifanayo lama-preforms linezinsuku ezihlukene zokukhiqiza, inqubo yokubumba igalelo ingase ihluke kakhulu.Ikhwalithi ye-preform inquma ubunzima benqubo yokubumba igalelo.Izidingo ze-preform ubumsulwa, obala, akukho ukungcola, akukho umbala, nobude bephoyinti lomjovo kanye ne-halo ezungezile.
2.2 Ukushisisa
Ukushisa kwe-preform kuqedwa kuhhavini lokushisa, izinga lokushisa elibekwe ngesandla futhi lilungiswe ngenkuthalo.Kuhhavini, ishubhu le-infrared le-infrared limemezela ukuthi i-far-infrared ishisa ngokukhazimulayo i-preform, futhi ifeni engaphansi kuhhavini ihambisa ukushisa ukuze yenze izinga lokushisa ngaphakathi kuhhavini lilingane.Ama-preforms ajikeleza ndawonye ekuqhubekeni phambili kuhhavini, ukuze izindonga zama-preforms zishiswe ngokufanayo.
Ukubekwa kwezibani kuhhavini ngokuvamile kusesimweni se "zone" ukusuka phezulu kuya phansi, eneziphetho eziningi futhi phakathi nendawo encane.Ukushisa kwehhavini kulawulwa ngenani lokuvuleka kwezibani, ukusetha jikelele kwezinga lokushisa, amandla kahhavini kanye nesilinganiso sokushisa kwesigaba ngasinye.Ukuvulwa kweshubhu yesibani kufanele kulungiswe ngokuhambisana nebhodlela elishaywa ngaphambili.
Ukwenza ihhavini isebenze kangcono, ukulungiswa kobude bayo, ipuleti lokupholisa, njll. kubaluleke kakhulu.Uma ukulungisa kungalungile, kulula ukuvuvukala umlomo webhodlela (umlomo webhodlela uba mkhulu) kanye nekhanda eliqinile nentamo (impahla yentamo ayikwazi ukudonsa ivuleke) ngesikhathi sokubumba kanye nokunye ukukhubazeka.
2.3 Ukuvuthela kusengaphambili
Ukuvuthela kusengaphambili kuyisinyathelo esibaluleke kakhulu endleleni yokuphehla ibhodlela enezinyathelo ezimbili.Kubhekiselwa ekuvutheleni kwangaphambilini okuqala lapho ibha yokudonsa yehla phakathi nenqubo yokubumba igalelo, ukuze i-preform ibumbe.Kule nqubo, i-orientation yangaphambi kokuvuthela, ukucindezela kwangaphambili nokugeleza kokushaywa yizici ezintathu ezibalulekile zenqubo.
Ukuma komumo webhodlela langaphambi kokuqhuma kunquma ubunzima benqubo yokubumba ibhodlela kanye nekhwalithi yomsebenzi webhodlela.Umumo ojwayelekile webhodlela langaphambi kokuqhuma umise okwe-spindle, kanti lawo angajwayelekile ahlanganisa umumo we-sub-bell kanye nesimo sesibambo.Isizathu sokuma okungavamile ukushisisa kwendawo okungafanele, ukucindezela okunganele ngaphambi kokuvuthela noma ukugeleza kokuphefumula, njll. Usayizi webhodlela elivuthela ngaphambili uncike ekucindezelweni kwangaphambi kokuphefumula kanye nokuma kwangaphambi kokushaywa.Ekukhiqizeni, ubukhulu kanye nokuma kwawo wonke amabhodlela angaphambi kokuqhuma kuwo wonke amathuluzi kufanele kugcinwe kufana.Uma kunomehluko, kufanele kutholwe izizathu ezinemininingwane.Inqubo yokushisisa noma yokushaywa kwangaphambili ingalungiswa ngokuvumelana nezimo zebhodlela langaphambi kokuqhuma.
Usayizi wengcindezi yangaphambi kokushaywa uyahluka ngosayizi webhodlela namandla wemishini.Ngokuvamile, umthamo mkhulu futhi ingcindezi yangaphambi kokuvuthela incane.Imishini inamandla okukhiqiza aphezulu kanye nokucindezela okuphezulu kwangaphambi kokushaywa.
2.4 Umshini osizayo kanye nesikhunta
Umshini osizayo ubhekisela kakhulu ezintweni ezigcina izinga lokushisa lesikhunta lingashintshi.Ukushisa okungapheli kwesikhunta kudlala indima ebalulekile ekugcineni ukuzinza komkhiqizo.Ngokuvamile, izinga lokushisa lomzimba webhodlela liphezulu, futhi izinga lokushisa elingaphansi kwebhodlela liphansi.Kumabhodlela abandayo, ngoba umphumela wokupholisa phansi unquma izinga lokuma kwamangqamuzana, kungcono ukulawula izinga lokushisa ku-5-8 ° C;futhi izinga lokushisa elingaphansi kwebhodlela elishisayo liphakeme kakhulu.
2.5 Imvelo
Ikhwalithi yendawo yokukhiqiza nayo inomthelela omkhulu ekulungisweni kwenqubo.Izimo zokushisa ezizinzile zingakwazi ukugcina ukuzinza kwenqubo kanye nokuzinza komkhiqizo.Ukubumba ibhodlela le-PET ngokuvamile kungcono endaweni yokushisa yekamelo kanye nomswakama ophansi.
3. Ezinye izidingo
Ibhodlela lokucindezela kufanele lanelise izidingo zokuhlolwa kokucindezeleka nokuhlolwa kwengcindezi ndawonye.Ukuhlolwa kokucindezeleka ukuvimbela ukuqhekeka nokuvuza kweketango lamangqamuzana ngesikhathi sokuxhumana phakathi kwebhodlela ne-lubricant (alkaline) ngesikhathi sokugcwaliswa kwebhodlela le-PET.Ukuhlolwa kwengcindezi ukugwema ukugcwaliswa kwebhodlela.Ukulawulwa kwekhwalithi ngemuva kokuqhuma kwegesi ethile yokucindezela.Ukwanelisa lezi zidingo ezimbili, ukujiya kwephoyinti elimaphakathi kufanele kulawulwe phakathi kwebanga elithile.Isimo esijwayelekile ukuthi iphuzu eliphakathi nendawo lincane, ukuhlolwa kokucindezeleka kuhle, futhi ukumelana nokucindezela kubi;indawo emaphakathi iwugqinsi, ukuhlolwa kwengcindezi kuhle, futhi ukuhlolwa kokucindezeleka kubi.Yiqiniso, imiphumela yokuhlolwa kokucindezeleka iphinde ihlobane eduze nokuqoqwa kwezinto endaweni yoguquko ezungeze indawo emaphakathi, okufanele ilungiswe ngokuya ngesipiliyoni esisebenzayo.
4. Isiphetho
Ukulungiswa kwenqubo yokubumba ibhodlela le-PET kusekelwe kudatha ehambisanayo.Uma idatha impofu, izidingo zenqubo ziqinile kakhulu, futhi kunzima ngisho nokufutha amabhodlela afanelekayo.
Isikhathi sokuthumela: May-09-2020