S twist thiab Z twist
Lub npe hu ua yarn yog ib pob khoom txuas ntxiv uas muaj fiber ntau. Siv lub iav tsom iav kom pom tias cov duab saum npoo ntawm cov xov paj zoo li ib qho kev sib tw, nrog rau lub ntsej muag kauv. Thaum lub sij hawm spinning txheej txheem, thaum lub spindle siv rub lub spindle phaj tig ceev ceev, lub uniform, zoo thiab huv si fiber bundles kos los ntawm cov rollers txuas ntxiv tau txais lub zog ob peb generated los ntawm kev sib hloov ntawm spindle, thiab yog twisted mus rau hauv ib tug twist zoo. , uas yog, Ib yam li twisting ib txoj hlua straw, muab ib qho kawg ntawm ob peb straws rau hauv koj ob txhais tes thiab rub lawv, lossis rub lawv rau ntawm koj txhais ceg kom ntxiv twist.
Cov kev taw qhia ntawm twisting thaum twisting yog txawv, thiab tilt kev taw qhia ntawm cov fibers nyob rau hauv cov xov paj - cov kev taw qhia ntawm twisting kuj txawv. Txoj kev sib tw yog muab faib ua S twist thiab Z twist.
Piv txwv li, tom qab twisting, thaum saib vertically, cov fibers hauv cov xov paj qaij los ntawm sab xis mus rau sab laug, uas yog S twist, los yog tes twist, thiab txoj cai twist; cov fibers nyob rau hauv cov xov paj qaij los ntawm sab laug mus rau sab xis, uas yog Z twist, los yog backhand twist, los yog sab laug twist. Raws li qhia hauv FIG.
