Dab tsi yog twist S thiab twist Z?
Tsis ntev los no, tau muaj ntau tham txog S twist thiab Z twist threads thiab nws tau txais kev mloog. Qee tus xa mus rau xov twist li sab laug lossis txoj cai twist, tab sis cov lus zoo yog S lossis Z twist. Thaum ib txoj hlua xaws, nws yog tsim los ntawm ntau cov hlua, feem ntau yog ob lossis peb txoj hlua (tseem hu ua plies lossis ply) twisted ua ke, txawm hais tias qee qhov yuav muaj ntau li rau los yog yim strands twisted ua ke. Tag nrho cov xaws, paj ntaub, los yog quilting threads ua rau lub tsev tshuab, industrial machinery, los yog longarm machines yuav tsum muaj ib tug zaum kawg Z twist qauv.
Kev taw qhia ntawm kev sib tw yog qhov tseem ceeb. Yog tias koj tuav lub roving ntawm ib qho kawg thiab koj tig mus rau sab laug, koj tsim qhov "S" twist. Yog tias koj tig mus rau sab xis, koj tsim qhov "Z" twist
Thawj twist (los yog thawj twist) rau tus kheej strands yuav tsum yog S twist. Cov strands no ces twisted ua ke nyob rau hauv ib tug kawg Z twist los tsim cov xov. Qhov no yog tib yam thoob ntiaj teb rau txhua hom loj ntawm xaws, paj ntaub, lossis quilting tshuab. Muaj ob peb threads uas muaj qhov opposite twist. Qee cov tes quilting xov, knitting, thiab weaving threads muaj qhov kawg S twist. Yog hais tias koj siv ib tug xov nrog ib tug opposite twist, cov xov yuav loosen es tsis txhob nruj raws li koj sew nrog nws. Cov xov tsis raug cim nrog tus qauv twist vim nws tsis suav tias yog qhov tseem ceeb kom paub. Yog tias koj siv cov xov zoo los ntawm lub tuam txhab txhim khu kev qha thiab khi nrog nws hauv nws lub hom phiaj, feem ntau nws yuav muaj qhov sib tw. Yog tias koj pom tias koj cov xov unravels raws li nws sews, nws yog tej zaum ib tug xov tsis npaj rau lub tshuab ua hauj lwm.
