Momwe mabotolo a PET amapangidwira
Mabotolo a PETndi ziwiya zapulasitiki zopangidwa kuchokera ku pulasitiki ya PET kudzera mu njira imodzi kapena ziwiri zokonzera. Mabotolo a PETimadziwika ndi kulemera kwake kopepuka, kuwonekera bwino kwambiri, komanso kukana kugunda ndi kusweka.
PET ya lchisankho bkadzidzi, kapena polyethylene terephthalate, nthawi zambiri imatchedwa polyester. Dzina lake lachingerezi ndi Polyethylene Terephthalate, lomwe limapangidwa ndi polymerization reaction (condensation) ya zinthu ziwiri zopangira mankhwala: terephthalic acid (PTA) ndi ethylene glycol (EG).
Ma preform a Mabotolo a PETndi zinthu zopangidwa ndi jakisoni. Monga zinthu zapakati zomwe zimamalizidwa pang'ono kuti zigwiritsidwe ntchito popangira ma biaxial stretch blow molding, khosi la preform limakhala litapangidwa kale panthawi yopangira ma injection, ndipo kukula kwake sikudzasintha panthawi yotenthetsera ndi kutambasula/kuwomba. Kukula, kulemera, ndi makulidwe a khoma la preform ndi zinthu zomwe tiyenera kuziganizira kwambiri tikamawomba. Mabotolo a PET.
Ma diameter a lchisankho bkadzidzi Pakamwa pa screw pakhoza kupyolapo pali Ф18, Ф20, Ф22, Ф24, Ф28, Ф33, ndi zina zotero (zofanana ndi T dimension ya pakamwa pa botolo), ndipo specifications ya screw ulusi nthawi zambiri imagawidwa m'magulu awa: 400, 410, 415 (zofanana ndi chiwerengero cha screw ulusi). Kawirikawiri, timati 400 ndi screw ulusi umodzi wozungulira, 410 ndi screw ulusi wozungulira 1.5, ndipo 415 ndi malo apamwamba okhala ndi screw ulusi wozungulira kawiri.
Bwanji Mabotolo a PETzimapangidwa:
Njira yomaliza njira zojambulira, kutambasula ndi kupukusa mu makina amodzi imatchedwa njira ya sitepe imodzi. Mu njira ya sitepe imodzi, pambuyo pa jekeseni yoyamba, imapangidwa ndi kuziziritsidwa, kutambasula ndi kupukusa lchisankho bkadzidzi ntchito ikuchitika. Ubwino wake waukulu ndi kusunga mphamvu, kupanga zinthu zambiri, kusagwiritsa ntchito manja, komanso kuchepetsa kuipitsa.
Njira ya magawo awiri imasiyanitsa jakisoni ndi kutambasula ndi kupoperalchisankho bkadzidzi, ndipo amachita izi m'makina awiri nthawi zosiyanasiyana, zomwe zimadziwikanso kuti injection-stretch-blowing lchisankho bkadzidzi njira. Mu gawo loyamba, preform imapangidwa pogwiritsa ntchito makina opangira jakisoni. Mu gawo lachiwiri, preform pa kutentha kwa chipinda imatenthedwanso ndikutambasulidwa ndikuwombedwa mu Mabotolo a PETUbwino wa njira ya magawo awiriyi ndikuti imatha kugula ma preforms kuti ipangire blow molding. Ingachepetse ndalama zomwe zimayikidwa (mu antchito ndi zida). Kuchuluka kwa preform ndi kochepa kwambiri kuposa kwa botolo, zomwe zimapangitsa kuti ikhale yosavuta kunyamula ndi kusungira. Ma preforms opangidwa nthawi yopuma amatha kuphikidwa mu Mabotolo a PETmu nyengo ya pachimake.
Mabotolo a PETamagwiritsidwa ntchito kwambiri mumakampani opanga zodzoladzola, makamaka m'magawo osamalira tsitsi ndi kusamalira thupi. Mabotolo a shampu, otsukira thupi, opaka toner, ndi mafuta ochotsera zodzoladzola amapangidwa pogwiritsa ntchito blow molding.