njira

Mu Extrusion Blow Molding (EBM), pulasitiki imasungunuka ndikuikidulira mu chubu chopanda (parison). Kenako nyongolotsi amaigwira ndikuyiyika mu nkhuni zachitsulo. Mphepo imawombedwa ndi parison, ndikupaka mafuta m'botolo, chidebe, kapena gawo. Pulasitikiyo utakhazikika bwino, nkhungu imatsegulidwa ndipo mbaliyo imatulutsidwa.

Njira yopangira jakisoni wothandizila kupukuta (IBM) imagwiritsidwa ntchito popanga galasi lopanda pake ndi zinthu za pulasitiki zochuluka. Mukuchita IBM, polima ndi jakisoni wopangidwa pachikhomo chomenya; ndiye kuti pini yapakati imasinthidwa kupita kumalo owumba ndikuumba kuti ipangitsidwe ndikuthira. Awa ndi omwe amagwiritsidwa ntchito pang'ono pazowumba zitatu izi, ndipo amagwiritsidwa ntchito kupanga mabotolo ang'ono azachipatala. Njirayi imagawidwa m'magawo atatu: jakisoni, kuwomba ndi kudzimitsa.

Nkhaniyi ikufotokoza kukhazikitsa koyeserera mu mtundu wamaganizidwe kuti muyeze momwe mpweya umagundira, ndikuwunika mtengo wa mpweya wothinikizidwa motsutsana ndi phindu lozizira.

Pakuwomba mphamvu yowomba ndi yofunika kwambiri. Nkhani yochokera ku yunivesite ya Aachen yokhala ndi chitsanzo chofotokozera za kufunikira kwa kupanikizika pakugwira ntchito kwa geometry ya pamwamba.

Kupukuta kwa jakisoni (kuwumba jakisoni ku USA) ndi njira yopangira zinthu popanga mbali mwa kubayira zinthu mu nkhungu. Kupukuta kwa jakisoni kumatha kuchitika ndi zinthu zambiri, kuphatikizapo zitsulo, (zomwe njirayi imatchedwa diecasting), magalasi, elastomers, confsoci, komanso ma polima a thermoplastic komanso thermosetting.

Izi zili ndi njira ziwiri zosiyana, zomwe ndi gawo limodzi komanso magawo awiri. Njira imodzi yokha imagawidwanso pamakina atatu ndi 3-station Makina awiri opangira jekeseni (ISBM), pulasitiki imapangidwa koyamba kukhala "preform" pogwiritsa ntchito jekeseni. Preforms izi zimapangidwa ndi khosi la mabotolo, kuphatikiza ulusi ("kumaliza") kumapeto kwake. Ma preform awa amapakidwa, ndikudyetsedwa pambuyo pake (pambuyo pozizira) mumakina owumbanso otambasula. Pogwiritsa ntchito ISB, ma preforms amatenthedwa (makamaka amagwiritsa ntchito zotenthetsera infrared) pamwamba pa kutentha kwa magalasi, kenako amawombedwa ndikugwiritsa ntchito mpweya wambiri m'mabotolo pogwiritsa ntchito zotumphukira zachitsulo. Preform nthawi zonse amatambasulidwa ndi ndodo yapakati ngati gawo la ndondomekoyi.

Kulemba kumbuyo kwa makina owumba kumatha kuyambitsa kuzungulira kwa chizindikiro, chifukwa cha botolo la botolo. Pali njira zingapo zakusintha / kuthetsa mavutowa.