Makina owuzira botolo ndi makina omwe amatha kuwomba ma preform omalizidwa kukhala mabotolo kudzera munjira zina zaukadaulo. Pakalipano, makina ambiri opangira nkhonya amatengera njira ziwiri zowomba, ndiko kuti, preheating - kuwomba akamaumba.
1. Kutenthetsa
The preform ndi irradiated kudzera mkulu kutentha nyali kutentha ndi kufewetsa thupi la preform. Pofuna kusunga mawonekedwe a pakamwa pa botolo, pakamwa pa preform sikuyenera kutenthedwa, choncho chipangizo china chozizira chimafunika kuti chiziziritsa.
2. Kuwomba akamaumba
Gawo ili ndikuyika preheated preform mu nkhungu yokonzeka, kuyiyika ndi kuthamanga kwambiri, ndikuwuzira preform mu botolo lomwe mukufuna.
Kuwomba kwake ndi njira yotambasulira njira ziwiri, momwe maunyolo a PET amakulitsidwa, kuwongolera ndi kulumikizidwa mbali zonse ziwiri, motero amawonjezera mphamvu zamakina a khoma la botolo, kupititsa patsogolo kulimba, kulimba, komanso mphamvu, komanso kukhala ndi ntchito zapamwamba kwambiri. Kutsekereza mpweya wabwino. Ngakhale kutambasula kumathandiza kulimbitsa mphamvu, sikuyenera kutambasulidwa kwambiri. Chiŵerengero cha kutambasula-kuwomba chiyenera kuyendetsedwa bwino: mayendedwe a radial sayenera kupitirira 3.5 mpaka 4.2, ndipo mayendedwe a axial sayenera kupitirira 2.8 mpaka 3.1. Makulidwe a khoma la preform sayenera kupitirira 4.5mm.
Kuwomba kumachitika pakati pa kutentha kwa galasi ndi kutentha kwa crystallization, komwe kumayendetsedwa pakati pa 90 ndi 120 madigiri. Munjira iyi, PET imawonetsa zotanuka kwambiri, ndipo imakhala botolo lowonekera pambuyo pakuwumbidwa mwachangu, kuziziritsa komanso kukhazikika. Mu njira imodzi, kutentha kumeneku kumatsimikiziridwa ndi nthawi yozizira mu ndondomeko yopangira jekeseni (monga makina opangira jekeseni wa Aoki), kotero mgwirizano pakati pa jekeseni ndi malo owombera ayenera kugwirizanitsidwa bwino.
Pakuumba nkhonya, pali: kutambasula—nkhonye imodzi—nkhonya ziŵiri. Zochita zitatuzi zimatenga nthawi yochepa kwambiri, koma ziyenera kugwirizanitsidwa bwino, makamaka masitepe awiri oyambirira amatsimikizira kugawidwa kwazinthu zonse ndi ubwino wa kuwomba. Choncho, m'pofunika kusintha: nthawi yoyambira yotambasula, kuthamanga kwachangu, nthawi yoyambira ndi yomaliza ya kuwomba chisanadze, kuthamanga kusanachitike, kuthamanga kusanachitike, ndi zina zotero. Ngati n'kotheka, kugawa kwa kutentha kwakukulu za preform zitha kuyendetsedwa. Kutentha kwa khoma lakunja. M'kati mwa kuwombera kofulumira komanso kuzizira, kupsinjika komwe kumapangidwa kumapangidwa mu khoma la botolo. Kwa mabotolo a zakumwa za carbonated, amatha kukana kupanikizika kwamkati, komwe kuli bwino, koma kwa mabotolo odzaza otentha, ndikofunikira kuwonetsetsa kuti amamasulidwa mokwanira pamwamba pa kutentha kwa magalasi.
Nthawi yotumiza: Aug-02-2022