The process of drawing the warp yarn through the eye of heald frames according to design is called drafting, and the plan which indicates how drafting needs to be done is called drafting plan. It also denotes the number of heald shaft required for a given weave repeat
Twill & Angle of Twill Weave
A twill weave is characteristics by diagonal ribs (twill lines) on the face of the fabric. These twill lines are produce by letting all warp ends interlace in the same way but displaing the interlaceing points of each end by one pick relative to that of the previous end while the plain weave can only be woven in one form, there exit several options with regrad to twills.
Types of Drafting Plan
The various drafts are classified as follows:Straight draft,Skip draft,Satin draft,Pointed draft,Broken draft,Divided draft,Grouped draft,Combined draft,Curved draft.