Njira zonsezi zimagwiritsidwa ntchito popanga ma polima opanda msoko, opanda msoko kuchokera ku ma polima a thermoplastic.Makina ozungulira amatha kugwiritsidwanso ntchito pa ma thermosets.Magawo amasiyana kukula kuchokera ku mabotolo apulasitiki ang'onoang'ono a 5 ml (0.15 oz) kupita ku ng'oma zazikulu zosungirako za 38,000 l (10,000 gal).Ngakhale njira ziwirizi zimapikisana nthawi zina, nthawi zambiri apeza ma niches awo.Kumangirira kowomba ndikoyenera kwambiri kupanga zotengera zing'onozing'ono zotayidwa, pomwe zozungulira zimakomera mawonekedwe akulu opanda kanthu.
Blow molding ndi njira yowumba momwe mpweya umagwiritsidwa ntchito kuti ufufuze pulasitiki yofewa mu nkhungu.Ndi njira yofunika kwambiri yamafakitale popanga pulasitiki yopanda kanthu yokhala ndi makoma owonda, monga mabotolo ndi zotengera zofananira.Popeza zambiri mwazinthuzi zimagwiritsidwa ntchito pazakumwa zogula m'misika yambiri, kupanga nthawi zambiri kumakonzedwa mokwera kwambiri.Ukadaulowu umabwerekedwa kumakampani agalasi omwe mapulasitiki amapikisana nawo pamsika wamabotolo otayidwa kapena obwezerezedwanso.
Extrusion Blow Molding.Kuwumba kowomba uku kumakhala ndi kuzungulira komwe kukuwonetsedwa pansipa.Nthawi zambiri, njirayi imakonzedwa ngati ntchito yopanga kwambiri yopanga mabotolo apulasitiki.Kutsatizanaku kumangochitika zokha ndipo nthawi zambiri kumaphatikizidwa ndi machitidwe akumunsi monga kudzaza mabotolo ndi kulemba zilembo.Nthawi zambiri zimakhala zofunikira kuti chidebe chowombedwacho chikhale cholimba, ndipo kulimba kumadalira makulidwe a khoma pakati pa zinthu zina.
Jekeseni Kuwomba Kumangira.Pochita izi, parison yoyambira imapangidwa ndi jekeseni osati kutulutsa.Tsatanetsatane wosavuta wafotokozedwa pansipa.Poyerekeza ndi mpikisano wake wochokera ku extrusion, njira yopangira jekeseni imakhala ndi chiwerengero chochepa chopanga, chomwe chimafotokoza chifukwa chake sichigwiritsidwa ntchito kwambiri.
M'mitundu yosiyanasiyana ya jekeseni, yomwe imatchedwa kutambasula kuwombera, ndodo yowombayo imapita pansi mpaka pansi pa jekeseni wopangidwa ndi jekeseni pa sitepe 2, motero kutambasula pulasitiki yofewa ndikupanga kutsindika kwabwino kwa polima kusiyana ndi jekeseni wamba jekeseni kapena kuwombera extrusion. .Zomwe zimapangidwira zimakhala zolimba kwambiri, zowonekera bwino komanso kukana kwabwinoko.Zomwe zimagwiritsidwa ntchito kwambiri pakuwomba kowomba ndi polyethylene terephthalate (PET), polyester yomwe imakhala yotsika kwambiri ndipo imalimbikitsidwa ndi njira yowongoka.Kuphatikiza kwa zinthu kumapangitsa kukhala koyenera ngati chidebe cha zakumwa za carbonated.
Zida ndi Zogulitsa.Kuwomba kumangotengera thermoplastics.Polyethylene ndiye polima yomwe imagwiritsidwa ntchito kwambiri popanga kuwomba;makamaka, kachulukidwe kwambiri komanso polyethylene yolemera kwambiri yama cell (HDPE ndi HMWPE).Poyerekeza malo awo ndi omwe ali ndi kachulukidwe kakang'ono ka PE kamene kamafunikira kuuma kwa chinthu chomaliza, ndikokwera mtengo kwambiri kugwiritsa ntchito zida zodulazi chifukwa makoma a chidebe amatha kucheperako.Zopangira zina zowombera zimapangidwa ndi polypropylene (PP), polyvinylchloride (PVC), ndi polyethylene terephthalate.
Zotengera zotayidwa zonyamula katundu wamadzimadzi zimakhala gawo lalikulu lazinthu zopangidwa ndi kuwomba;koma sizinthu zokhazo.Zinthu zina ndi monga ng'oma zazikulu zotumizira (magalani 55) a zakumwa ndi ufa, matanki akuluakulu osungira (magalani 2000), matanki amafuta agalimoto, zoseweretsa, ndi ziboliboli za ma sail board ndi mabwato ang'onoang'ono.Pomalizira pake, ziboliboli ziwiri za ngalawa zimapangidwa mowirikiza kamodzi ndipo kenako zimadulidwa kukhala zingwe ziwiri zotseguka.
Nthawi yotumiza: Mar-15-2016