Pub puffer siv yuav tsum tau them sai sai rau qhov yuav tsum tau ntawm cov khoom siv sieving thiab tswj. Tom qab cov khoom raug crushed, uas yuav muab tov nrog ib tug me me ntawm cov loj hais, thaum tag nrho cov txheej txheem kuj muaj ib co impurities, ntxiv rau cov txheej txheem crushing, fiber ntau nyob rau hauv cov khoom vim lub peev xwm me me, kuj muaj ib feem. ntawm fiber ntau tsis crushed zoo. Cov impurities thiab fibers nyob rau hauv cov txheej txheem extruder extrusion ib feem ntawm "melting", tab sis muaj ib feem ntawm lub qhov tuag ua ntej mus txog lub qhov tuag yuav raug thaiv lub qhov tuag, qee cov fibers txawm los ntawm lub qhov tuag, yuav muaj ib feem ntawm lub cutter dai rau ntawm lub cutter, yog li cuam tshuam rau lub cutter ntawm kev txiav ntawm cov khoom puffed, thiaj li hais tias qhov kev txiav ntawm puffed hais txog kev zoo nkauj ntawm qhov poob.
Yog li ntawd, lub tshuab pub puffing tshuab puffed tshuaj seem ua ntej tus txheej txheem kuj yuav tsum tau teem ib tug zoo sieving khoom. Tam sim no ib qho kev xyaum zoo yog los teeb tsa lub siab square sieve nyob rau hauv cov khoom crushing, thiab nyob rau hauv cov khoom yuav tsum tau nthuav warehouse yuav tsum tau soj ntsuam dua los ntawm lub siab square sieve los tiv thaiv cov txheej txheem ntawm impurities tov rau hauv cov khoom.
