P.VoideICetexChemnitzerRingCanRingcanlUstinadOrIici2StahIacker&GriIISuessenSchurRingCan2004lr/min3SKFAutoconer338345750l2!#$60000r/min80m/min4350575010tex25texNm40~500texNm200100%100%PESCetexHighspeedlargedraftratiodraftingsystemP.VoidelCetexChemnitzerTextilmaschinenentwicklungGmJHChemnitz/GermanyAbstractThedraftingsystemwithsuperIargedraftratioforRingCanspinningprocessfromcottonsIivertofineyarnisdescribed.Thetestdataprovedthattheperformance-stabIedraftingsystemguaranteestheguaIityofsuperIargeratiodrafting.KeywordsRingCanspinningframedraftingsystem!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!cottonsIiver1680896CN31-1595/TS4-492E-maiI188215200051021627529200216237322702162754501E-maiItechtex@dhu.edu.cn2220061