A spinning apparatus is disclosed according to the invention having a drafting zone comprising at least four roll pairs for drawing a sliver comprising one or more types of staple fibers. The rolls pairs include a back roll pair, intermediate roil pairs and a front roll pair and the distance between...http://www.google.es/patents/US5960621?utm_source=gb-gplus-sharePatente US5960621 - Spinning apparatus, method of producing yarns, and resulting yarns
Spinning apparatus, method of producing yarns, and resulting yarns
