Extruder yog ib qho ntawm cov tshuab yas, uas tau tshwm sim hauv xyoo pua 18th.
Raws li cov khoom ntws kev taw qhia ntawm lub taub hau tuag thiab lub kaum sab xis nruab nrab ntawm txoj kab nruab nrab ntawm cov ntsia hlau, lub extruder tuaj yeem faib lub taub hau tuag rau hauv txoj cai kaum lub taub hau thiab oblique lub taub hau tuag.
Cov ntsia hlau extruder tso siab rau lub siab thiab shear quab yuam tsim los ntawm kev sib hloov ntawm cov ntsia hlau, uas tuaj yeem ua rau cov khoom tuaj yeem ua tiav cov yas thiab sib xyaw ua ke, thiab tsim los ntawm kev tuag. Yas extruders tuaj yeem muab faib ua ntxaib-ntsia hlau extruders, ib leeg-ntsia hlau extruders, thiab tsawg-ntsia hlau extruders thiab cov ntsia hlau-tsawg extruders.