Kev tsim cov xov paj sib xyaw pib nrog qhov hnyav thiab ua ntej sib xyaw cov fibers sib txawv raws li qhov sib xyaw ua ke. Vim hais tias ntuj thiab tshuaj fibers txawv nyob rau hauv noo noo regain, ntev, thiab fineness, lub qhib thiab blending theem yuav tsum tau ua tib zoo tswj cov kauj ruam kom paub meej tias cov fibers dispersed li uniformly li sai tau, yog li tso lub hauv paus rau yarn stability nyob rau hauv lub tom ntej ua.
Cov txheej txheem txheej txheem suav nrog kev qhib thiab tu, daim npav, kos duab, rov ua haujlwm, thiab spinning. Kev vam meej nyob rau hauv txhua tus txheej txheem hinges ntawm cov kev txwv tsis pub leej twg paub- xws li cov qauv piv txwv, twist theem, thiab ceev synchronization- uas yuav tsum tau hloov kho raws li qhov sib xyaw sib xyaw kom tsis txhob muaj teeb meem xws li cov xov paj tsis sib xws lossis qhov kawg tawg ntau dhau. Tsis tas li ntawd, muab cov yam ntxwv sib txawv ntawm cov fibers sib txawv, cov khoom siv thiab cov khoom siv ib puag ncig (kub thiab av noo) yuav tsum tau khaws cia kom ruaj khov kom ntseeg tau cov xov paj zoo ib yam.
Cov xov paj tiav dhau winding lossis twisting los txhim kho nws lub zog thiab ruaj khov thaum siv. Kev tshuaj xyuas zoo- npog lub zog tensile, qhov sib npaug, thiab qhov pom kev zoo - tau ua ua ntej cov xov paj tau pom zoo rau kev ntim khoom thiab chaw muag khoom. Thoob plaws hauv tag nrho cov kev ua haujlwm, batch kev tswj thiab kev tswj ib puag ncig yog qhov tseem ceeb sib npaug los ua kom cov txheej txheem ua tau zoo thiab sib xws ntawm cov xov paj sib xyaw rau cov ntaub ntawv siv hauv qab.