Tus txheej txheem ntawm txhaj tshuaj molding yog txawv los ntawm cov tshuab molding. Tshuab molding yog txhaj tshuaj tshuab; txhaj tshuaj molding txhaj tshuaj; tshuab moulding yuav tsum muaj lub taub hau tseg tom qab los ntawm txoj hlua yeeb nkab. Txhaj tshuaj molding yuav tsum muaj lub qhov rooj ntawm qhov rooj. Feem ntau hais lus, kev txhaj molding yog ib cov tub ntxhais muaj lub cev thiab tshuab moulding yog ib qho hauv lub cev tsis muaj lub ntsej muag.Qhov tshuab molding ntws yog tsis sib luag.Yog muaj cua nkag rau hauv tshuab moulding.Piv txwv molding, los yog thermoplastic txhaj molding, uas cov khoom yas melted thiab ces txhaj rau hauv cov kab noj hniav hauv lub cev.Yog sai sai thaum cov hlau yas nkag hauv lub pwm, nws zoo ib yam rau ib hom duab los ntawm cov kab noj hniav txias txias.Qhov zoo lawm feem ntau qhov kawg khoom thiab tsis ua ntxiv ua ntej ua ntsia lossis siv los ua qhov khoom kawg.Tej yam lus, xws li protrusions, ribs, thiab threads, tuaj yeem ua rau hauv ib kauj ruam txhaj tshuaj molding.Kev tshuaj molding tshuab muaj ob lub tswv yim: kev txhaj tshuaj thiab pwm kaw twj rau melting thiab pub yas rau hauv mould.The muaj nuj nqi ntawm cov qauv ntaus ntawv yog ntawm 1: 1. Lub pwm yog kaw nyob rau hauv kev txhaj tshuaj tiv thaiv.Xem cov khoom ntawm qhov kev txhaj tshuaj thiab yaj lub cev ua ntej txhaj, ces tswj lub siab thiab ceev txhaj tshuaj rau hauv cov pwm.Yog muaj ob hom kev txhaj tshuaj tiv thaiv: hom tshuaj tiv thaiv kab rov tav lossis cov khoom siv ob-theem, thiab cov pleev plhaub rov qab.Qhov cwj pwm hau hom preplasticizer siv lub hau ua ntej (thawj theem) (theem 2). Qhov zoo ntawm lub hau thawb ntim preplasticizer yuav tsum yog huab cua, siab ceev thiab kev kub ceev, thiab kev txhaj tshuaj tivthaiv (siv cov neeg ua haujlwm tawm ntawm ob hnub ntawm lub piston stroke) .Cov khoom siv no yuavtsum tau siv rau cov khoom siv, thiab cov nqi siab ntau heev.Disadvantages muaj sij hawm nyob tsis sib txig (ua rau cov khoom degradation, cov cuab yeej siv dua thiab kev them nqi kho mob.Qhov feem ntau siv cov pauv plooj nruab nrab pauv tsis tau plunger rau yaj thiab txhaj cov plastics