Ib qho ntawm cov teeb meem loj hauv extrusion yog lub xub ntiag ntawm huab cua lossis roj hnab, tseem hu ua "voids", hauv cov khoom siv extruded.
Cov voids no tuaj yeem ua rau ntau yam tsis xws luag hauv cov khoom extruded, xws li txo lub zog, tsis zoo, thiab qhov ntev tsis sib xws.
Cov hnab tshos cua tuaj yeem tsim nyob rau hauv cov khoom siv extruded vim muaj ntau yam, nrog rau qhov tsis txaus ntawm qhov extruder, kev sib xyaw tsis zoo ntawm cov khoom siv yas, lossis cov qauv tsim tsis zoo ntawm cov tuag lossis lwm yam khoom ntawm cov txheej txheem extrusion.Qhov muaj cov dej noo lossis lwm yam kab mob. nyob rau hauv cov khoom siv yas kuj tuaj yeem pab tsim cov hnab ntim cua.
Txhawm rau tiv thaiv kev tsim cov hnab ntim cua, nws yog ib qho tseem ceeb uas yuav tsum muaj kev ua haujlwm kom zoo, suav nrog qhov tsim nyog ntawm qhov kub thiab txias, qhov siab, thiab qhov ceev ceev.Ntxiv, cov tshuab ua pa zoo thiab tsim kom zoo tuag tuaj yeem pab txo qis cov pa hauv cov khoom siv extruded. .
Lwm yam teeb meem muaj peev xwm hauv extrusion muaj xws li cov teeb meem nrog cov pob txha tawg, uas tshwm sim thaum lub npoo ntawm cov khoom extruded ua ntxhib los yog wavy, los yog nrog tuag sewll, uas ua rau cov khoom nthuav dav tshaj qhov ntev ntawm qhov qhib tuag.Cov teeb meem no kuj tuaj yeem daws tau. los ntawm kev ua tib zoo tswj ntawm kev ua haujlwm thiab tsim nyog tsim cov khoom siv extrusion.
