Cov kab tom qab qhov chaw nres nkoj pub yog hu ua seem conveying.
Cov khoom ntawm no tsis tuaj yeem yog plasticized, tab sis yuav tsum tau preheated thiab compacted nyob rau hauv siab. Lub qub extrusion txoj kev xav tau siv los ntseeg tias cov khoom ntawm no yog xoob. Tom qab ntawd nws tau ua pov thawj tias cov khoom ntawm no yog cov khoom ntsaws ruaj ruaj, uas yog, cov khoom ntawm no yog cov khoom zoo li lub ntsaws tom qab extrusion, tsuav yog tias kev thauj mus los ua tiav, nws yog nws lub luag haujlwm.
Thaum qhov thib ob yog hu ua ntu compression, qhov ntim ntawm cov kauv zawj maj mam txo qis los ntawm qhov loj mus rau me me, thiab qhov kub yuav tsum ncav cuag qib ntawm cov khoom siv plasticization. Ntawm no, qhov compression yog tsim los ntawm kev xa khoom ntu 3 thiab compressed rau 1, uas yog hu ua compression piv ntawm cov ntsia hlau -3: 1. Qee lub tshuab kuj tau hloov pauv, thiab cov khoom siv yas nkag mus rau ntu thib peb.
Qhov thib peb yog seem metering, qhov twg cov khoom tuav lub plasticizing kub, ib yam li lub twj tso kua mis metering kom raug thiab quantitatively conveying cov khoom molten los muab lub taub hau tuag. Lub sijhawm no, qhov kub tsis tuaj yeem qis dua qhov kub ntawm plasticizing, thiab feem ntau yog siab dua me ntsis.
Cov ntsia hlau nkaus xwb extruder granulator feem ntau yog siv los extrude thermoplastics xws li mos thiab tawv polyvinyl chloride thiab polyethylene. Nws tuaj yeem ua tiav ntau yam khoom yas, xws li cov yeeb yaj kiab, kav dej, daim hlau, ribbon, thiab lwm yam, thiab tuaj yeem siv rau granulation.
