Umatshini wokuvuthela ibhotile ngumatshini onokuvuthela i-preforms egqityiweyo kwiibhotile ngeendlela ezithile zobuchwepheshe.Okwangoku, uninzi loomatshini bokubumba bamkela iindlela ezimbini zokuvuthela, oko kukuthi, ukufudumeza - ukubumba.
1. Ukufudumala
I-preform ihlanjululwe ngesibane esiphezulu sokushisa ukutshisa kunye nokuthambisa umzimba we-preform.Ukuze kugcinwe imilo yomlomo webhotile, umlomo we-preform awufuni ukufudumeza, ngoko ke isixhobo esithile sokupholisa siyadingeka ukuze siwupholise.
2. Ukubumba ukuvuthela
Eli nqanaba kukubeka i-preheated preform kwi-mold elungiselelwe, ukuyifaka ngoxinzelelo oluphezulu, kwaye uvuthele i-preform kwibhotile oyifunayo.
Inkqubo yokubumba i-blow yinkqubo yokwelula ngeendlela ezimbini, apho amatyathanga e-PET andiswa, alungelelaniswe kwaye alungelelaniswe kumacala omabini, ngaloo ndlela ukwandisa iimpawu zomatshini wodonga lwebhotile, ukuphucula ukunyanzeliswa, ukuqina, kunye namandla empembelelo, kwaye ukusebenza okuphezulu kakhulu.Ukuxineka kakuhle komoya.Nangona ukolula kunceda ekuphuculeni amandla, akufanele kunwenwe kakhulu.I-stretch-blow ratio kufuneka ilawulwe kakuhle: ulwalathiso lwe-radial akufanele ludlule i-3.5 ukuya ku-4.2, kwaye i-axial direction ayifanele idlule i-2.8 ukuya kwi-3.1.Ubunzima bodonga lwe-preform akufanele budlule i-4.5mm.
Ukuvuthela kuqhutyelwa phakathi kweqondo lokushisa lokutshintsha kweglasi kunye nobushushu becrystallization, ngokuqhelekileyo kulawulwa phakathi kwe-90 kunye ne-120 degrees.Kolu luhlu, i-PET ibonisa imeko ephezulu ye-elastic, kwaye iba yibhotile ecacileyo emva kokubumba ngokukhawuleza, ukupholisa kunye nokuseta.Kwindlela yenyathelo elinye, eli qondo lokushisa lichongwa lixesha lokupholisa kwinkqubo yokubumba i-injection (njengomshini wokubumba i-Aoki blowing), ngoko ke ubudlelwane phakathi kwesitofu kunye nezikhululo zokuvuthela kufuneka zidibaniswe kakuhle.
Kwinkqubo yokuvuthela, kukho: ukolula—isibetho esinye—izithonga ezibini.Izenzo ezithathu zithatha ixesha elifutshane kakhulu, kodwa kufuneka zilungelelaniswe kakuhle, ngokukodwa amanyathelo amabini okuqala amisela ukusabalalisa ngokubanzi kwezinto kunye nomgangatho wokuvuthela.Ngoko ke, kuyimfuneko ukulungelelanisa: ixesha lokuqala lokwelula, isantya esilula, ukuqala kunye nokuphela kwexesha lokuvuthela kwangaphambili, ukunyanzeliswa kwangaphambili, ukuhamba kwangaphambili, njl. Ukuba kunokwenzeka, ukusabalalisa ubushushu buphela. ye-preform inokulawulwa.Iqondo lobushushu bodonga lwangaphandle.Kwinkqubo yokubumba ngokukhawuleza kunye nokupholisa, uxinzelelo olubangelwayo lwenziwa eludongeni lwebhotile.Kwiibhotile zesiselo se-carbonated, inokuxhathisa uxinzelelo lwangaphakathi, olulungileyo, kodwa kwiibhotile ezitshisayo, kuyimfuneko ukuqinisekisa ukuba ikhutshwe ngokupheleleyo ngaphezu kweqondo lokushisa kweglasi.
Ixesha lokuposa: Aug-02-2022