Drawing Frame Drafting System Design
topic
Drawing frame drafting systems use 3-over-3 or 4-over-4 roller drafting with top roller weighting of 150 to 300 Newtons per roller, break draft zones and main draft zones with defined roller gauge settings matched to fibre length, and bottom roller fluting geometry providing the grip and drive characteristics needed to control fibre movement through the drafting zone without fibre slippage or lap formation.
Role
Delivers the controlled fibre drafting that reduces sliver linear density and improves fibre parallelisation at drawing quality levels that enable subsequent ring spinning at target yarn count, with roller gauge, weighting, and drafting zone geometry requiring careful optimisation for each fibre type and length to prevent drafting waves that generate yarn count periodic faults.