Iibhotile zesiselo ziibhotile zePET eziguquliweyo ezixutywe ne-polyethylene naphthalate (PEN) okanye iibhotile ezidityanisiweyo zePET kunye ne-thermoplastic polyarylate. Zihlelwa njengeebhotile ezishushu kwaye zinokumelana nobushushu obungaphezulu kwama-85 ° C; iibhotile zamanzi zibandayo. Iibhotile, akukho mfuneko yokumelana nobushushu. Ibhotile eshushu ifana nebhotile ebandayo kwinkqubo yokwenza.
1. Izixhobo
Okwangoku, abavelisi bee-PET ezisebenza ngokupheleleyo ekubumbeni iibhombu bathenga ikakhulu kwi-SIDEL yaseFransi, i-KRONES yaseJamani, kunye ne-Fujian Quanguan yaseTshayina. Nangona abavelisi bahlukile, imigaqo yabo yezixhobo iyafana, kwaye ngokubanzi ibandakanya iindawo ezintlanu eziphambili: inkqubo yokubonelela ngeebhilethi, inkqubo yokufudumeza, inkqubo yokuvuthela iibhotile, inkqubo yolawulo kunye noomatshini abancedisayo.
2. Inkqubo yokubumba ngesivuthuvuthu
Inkqubo yokubumba ibhotile yePET.
Izinto ezibalulekileyo ezichaphazela inkqubo yokubumba ibhotile yePET zizinto ezisandula ukwenziwa, ukufudumeza, ukuvuthela kwangaphambili, ukungunda kunye nendawo yokuvelisa.
2.1 Ifomu yangaphambili
Xa ulungiselela iibhotile ezibunjiweyo, iitships zePET ziqala ngokubunjwa zibe zii-preforms ngenaliti. Oku kufuna ukuba umlinganiselo wezinto zesibini ezifunyenweyo ungabi phezulu kakhulu (ngaphantsi kwe-5%), inani lamaxesha okubuyiselwa awunakudlula kabini, kwaye ubunzima be-molecular kunye ne-viscosity azinakuba phantsi kakhulu (ubunzima be-molecular 31000- 50000, i-intrinsic viscosity 0.78-0.85cm3 / g). NgokoMthetho weSizwe woKhuseleko lokutya, izixhobo zesibini zokubuyisela azinakusetyenziswa ekupakisheni ukutya kunye namayeza. Ii-preforms ezibunjiweyo ngenaliti zingasetyenziswa ukuya kuthi ga kwiiyure ezingama-24. Ii-preforms ezingasetyenziswanga emva kokufudumeza kufuneka zigcinwe ngaphezulu kweeyure ezingama-48 ukuze zifudunyezwe. Ixesha lokugcina ii-preforms alinakudlula iinyanga ezintandathu.
Umgangatho we-preform uxhomekeke kakhulu kumgangatho wezinto ze-PET. Izinto ezilula ukuzidumba kwaye kulula ukuzibumba kufuneka zikhethwe, kwaye kufuneka kusetyenziswe inkqubo yokubumba ye-preform efanelekileyo. Uvavanyo lubonise ukuba ii-preform ezingenisiweyo ezenziwe ngezinto ze-PET ezine-viscosity efanayo kulula ukuzivuthulula kunezixhobo zasekhaya; ngelixa iqela elifanayo lee-preforms linemihla yokuvelisa eyahlukileyo, inkqubo yokubumba ye-blow nayo inokwahluka kakhulu. Umgangatho we-preform umisela ubunzima benkqubo yokubumba ye-blow. Iimfuno ze-preform kukucoceka, ukucaca, ukungabikho kokungcola, ukungabikho kombala, kunye nobude bendawo yokujova kunye ne-halo ejikelezileyo.
2.2 Ukufudumeza
Ukufudumeza i-preform kugqitywa yi-oven yokufudumeza, apho ubushushu bayo bumiselwa ngesandla kwaye buhlengahlengiswa ngokusebenzayo. Kwi-oven, ityhubhu yesibane se-infrared ekude ibhengeza ukuba i-infrared ekude ifudumeza i-preform ngokukhazimlayo, kwaye ifeni esezantsi kwe-oven ijikeleza ubushushu ukuze iqondo lobushushu ngaphakathi kwe-oven lilingane. Ii-preforms zijikeleza kunye kwintshukumo yokuya phambili kwi-oven, ukuze iindonga zee-preforms zifudunyezwe ngokulinganayo.
Ukubekwa kwezibane kwi-oven ngokuqhelekileyo kufana "ne-zone" ukusuka phezulu ukuya ezantsi, kunye neziphelo ezingaphezulu kunye nombindi omncinci. Ubushushu be-oven bulawulwa linani leembobo zezibane, ukuseta ubushushu ngokubanzi, amandla e-oven kunye nomlinganiselo wobushushu wecandelo ngalinye. Ukuvulwa kwetyhubhu yesibane kufuneka kulungiswe kunye nebhotile evuthelweyo kwangaphambili.
Ukuze i-oven isebenze ngcono, kubaluleke kakhulu ukulungiswa kokuphakama kwayo, ipleyiti yokupholisa, njl.njl. Ukuba ukulungiswa akulunganga, kulula ukudumba umlomo webhotile (umlomo webhotile uba mkhulu) kwaye intloko nentamo eqinileyo (izinto zentamo azinakutsalwa zivuleke) ngexesha lokubumba umoya kunye nezinye iziphene.
2.3 Ukuvuthela ngaphambi kokuba kuvuthelwe
Ukuvuthela ngaphambi komoya linyathelo elibaluleke kakhulu kwindlela yokuvuthela iibhotile enamanyathelo amabini. Libhekisa ekuvutheleni kwangaphambili okuqala xa umgca wokutsala uhla ngexesha lenkqubo yokubumba, ukuze i-preform ithathe imo. Kule nkqubo, ukujongwa kwangaphambili komoya, uxinzelelo lwangaphambi komoya kunye nokuhamba komoya zizinto ezintathu ezibalulekileyo zenkqubo.
Imilo yebhotile engaphambi kokuvuthela imisela ubunzima benkqubo yokubumba ibhotolo kunye nomgangatho womsebenzi webhotile. Imilo eqhelekileyo yebhotile engaphambi kokuvuthela imile okwe-spindle, kwaye engaqhelekanga ibandakanya imilo yentsimbi engaphantsi kunye nemilo yesiphatho. Isizathu semilo engaqhelekanga kukufudumeza okungafanelekanga kwendawo, uxinzelelo olunganelanga lwangaphambi kokuvuthela okanye ukuhamba kokuvuthela, njl. Ubungakanani bebhotile engaphambi kokuvuthela buxhomekeke kuxinzelelo lwangaphambi kokuvuthela kunye nolwalathiso lwangaphambi kokuvuthela. Kwimveliso, ubungakanani kunye nemilo yazo zonke iibhotile ezingaphambi kokuvuthela kwizixhobo zonke kufuneka zigcinwe zifana. Ukuba kukho umahluko, kufuneka kufunyanwe izizathu ezineenkcukacha. Inkqubo yokufudumeza okanye yokuvuthela ingalungiswa ngokweemeko zebhotile engaphambi kokuvuthela.
Ubungakanani boxinzelelo olungaphambi kokuvuthela luyahluka ngokobukhulu bebhotile kunye nomthamo wesixhobo. Ngokubanzi, umthamo mkhulu kwaye uxinzelelo olungaphambi kokuvuthela luncinci. Izixhobo zinamandla aphezulu emveliso kunye noxinzelelo oluphezulu olungaphambi kokuvuthela.
2.4 Umatshini wokuncedisa kunye nomngundo
Umatshini oncedisayo ikakhulu ubhekisa kwizixhobo ezigcina ubushushu bomngundo buhlala buhleli. Ubushushu obuhlala buhleli bomngundo budlala indima ebalulekileyo ekugcineni uzinzo lwemveliso. Ngokubanzi, ubushushu bomzimba webhotile buphezulu, kwaye ubushushu obuphantsi kwebhotile buphantsi. Kwiibhotile ezibandayo, kuba isiphumo sokupholisa ezantsi simisela inqanaba lokujonga iimolekyuli, kungcono ukulawula ubushushu kwi-5-8 ° C; kwaye ubushushu obuphantsi kwebhotile eshushu buphezulu kakhulu.
2.5 Okusingqongileyo
Umgangatho wendalo yemveliso nawo unempembelelo enkulu ekuhlengahlengisweni kwenkqubo. Iimeko zobushushu ezizinzileyo zinokugcina uzinzo lwenkqubo kunye nozinzo lwemveliso. Ukubumba ibhotile yePET ngokubanzi kungcono kubushushu begumbi kunye nomswakama ophantsi.
3. Ezinye iimfuno
Ibhotile yoxinzelelo kufuneka ihlangabezane neemfuno zovavanyo loxinzelelo kunye novavanyo loxinzelelo kunye. Uvavanyo loxinzelelo kukuthintela ukuqhekeka kunye nokuvuza kwekhonkco le-molecular ngexesha lokudibana phakathi kwebhotile kunye ne-lubricant (i-alkaline) ngexesha lokuzaliswa kwebhotile ye-PET. Uvavanyo loxinzelelo kukuphepha ukuzaliswa kwebhotile. Ulawulo lomgangatho emva kokuqhuma kwigesi ethile yoxinzelelo. Ukwanelisa ezi mfuno zimbini, ubukhulu bendawo ephakathi kufuneka bulawulwe ngaphakathi koluhlu oluthile. Imeko ngokubanzi kukuba indawo ephakathi incinci, uvavanyo loxinzelelo lulungile, kwaye ukumelana noxinzelelo kuphantsi; indawo ephakathi ityebile, uvavanyo loxinzelelo lulungile, kwaye uvavanyo loxinzelelo alukho. Kakade ke, iziphumo zovavanyo loxinzelelo zikwanxulumene ngokusondeleyo nokuqokelelwa kwezinto kwindawo yokutshintsha ejikeleze indawo ephakathi, ekufuneka ilungiswe ngokweemava asebenzayo.
4. Isiphelo
Ukulungiswa kwenkqubo yokubumba ibhotile yePET kusekelwe kwidatha ehambelanayo. Ukuba idatha ayilunganga, iimfuno zenkqubo zingqongqo kakhulu, kwaye kunzima nokubumba iibhotile ezifanelekileyo.
Ixesha lokuthumela: Meyi-09-2020
