Kodi blowing molding ndi chiyani?Kodi mfundo ya kuumba nkhonya ndi chiyani?

Malinga ndi njira yopangira parison, kuumba nkhonya kungathe kugawidwa mu kuumba kwa extrusion ndi jekeseni.Zomwe zangopangidwa kumene zimaphatikizira kuumba kwamitundu yambiri komanso kutambasula.The tubular pulasitiki parison wopezedwa extrusion kapena jekeseni akamaumba thermoplastic utomoni amaikidwa mu nkhungu kugawanika pamene kutentha (kapena kutenthedwa kufewetsa chikhalidwe), ndi woponderezedwa mpweya amalowetsedwa mu ndende yomweyo nkhungu kutsekedwa kuwomba pulasitiki parison. .Imakulitsa ndikumamatira pafupi ndi khoma lamkati la nkhungu, ndipo pambuyo pozizira ndi kugwetsa, zinthu zosiyanasiyana zopanda kanthu zimapezeka.Njira yopangira filimu yowombedwa ndi yofanana kwambiri pakuwomba akamaumba opanda kanthu, koma sagwiritsa ntchito nkhungu.Kuchokera pamalingaliro aukadaulo waukadaulo wa pulasitiki, njira yopangira filimu yowombedwa nthawi zambiri imaphatikizidwa mu extrusion.Njira yowumba nkhonya idagwiritsidwa ntchito popanga mbale zotsika kwambiri za polyethylene pa Nkhondo Yachiwiri Yadziko Lonse.Chakumapeto kwa zaka za m'ma 1950, ndi kubadwa kwa polyethylene yochuluka kwambiri komanso kukula kwa makina opangira nkhonya, teknoloji yowomba nkhonya idagwiritsidwa ntchito kwambiri.Kuchuluka kwa zotengera zopanda kanthu kumatha kufika malita masauzande ambiri, ndipo kupanga kwina kwatengera makompyuta.Pulasitiki yoyenera kuumba nkhonya imaphatikizapo polyethylene, polyvinyl chloride, polypropylene, polyester, ndi zina zotero, ndipo zotengera zopanda kanthu zimagwiritsidwa ntchito kwambiri ngati zotengera zamakampani.