Kuumba mozungulira, komwe kumadziwikanso kuti kuumba mozungulira, kuumba mozungulira, kuumba mozungulira, ndi zina zotero, ndi njira yopangira thermoplastic hollow molding. Njirayi ndikuyamba kuyika zinthu zopangira pulasitiki mu nkhungu, kenako nkhunguyo imazunguliridwa mosalekeza motsatira nkhwangwa ziwiri zoyima ndikutenthedwa, ndipo zinthu zopangira pulasitiki zomwe zili mu nkhunguyo zimakutidwa pang'onopang'ono ndikusungunuka ndikumamatira ku dzenje la nkhungu pansi pa mphamvu yokoka ndi kutentha. Pamwamba ponse, imapangidwa kukhala mawonekedwe omwe mukufuna, kenako imazizira kuti ipange chinthu.

(1) Yoyenera kuumba zigawo zazikulu komanso zazikulu kwambiri. Popeza njira yozungulira yopangira imangofunika mphamvu ya chimango kuti ithandizire kulemera kwa zinthuzo, nkhungu, ndi chimangocho, komanso mphamvu yotseka kuti zinthuzo zisatayike, ngakhale mutakonza zigawo zazikulu komanso zazikulu kwambiri zapulasitiki, palibe chifukwa chogwiritsa ntchito zida zolemera kwambiri ndi nkhungu. Chifukwa chake, m'malingaliro, palibe malire apamwamba pa kukula kwa zinthu zopangidwa ndi njira yozungulira yopangira.

(2) Ndi yoyenera kupanga zinthu zapulasitiki zamitundu yosiyanasiyana komanso zazing'ono-chifukwa cha kapangidwe kake kosavuta komanso mtengo wotsika wa nkhungu yopangira zinthu zozungulira, ndikosavuta kusintha zinthu.

(3) Ndi yoyenera kukonza zinthu zazikulu zopanda kanthu zokhala ndi mawonekedwe ovuta, zomwe sizingafanane ndi njira zina zopangira utomoni;

(4) N'zosavuta kusintha mtundu wa zinthu zapulasitiki. Ngati mtundu wa chinthucho ukufunika kusinthidwa, ndikofunikira kutsuka chida chopangira zinthu.

(5) Zoyipa zazikulu za kuumba mozungulira ndi izi: kugwiritsa ntchito mphamvu zambiri, chifukwa munthawi iliyonse youmba, nkhungu ndi maziko a nkhungu ziyenera kutenthedwa ndi kuzizira mobwerezabwereza; nthawi youmba ndi yayitali, chifukwa kutentha kumachitika makamaka ndi pulasitiki yosasinthika. , kotero nthawi yotenthetsera youmba mozungulira ndi yayitali; mphamvu ya ntchito ndi yayikulu, ndipo kulondola kwa zinthuzo ndi kochepa.