Mechanical Process
Fibre mixing operations executed during the sliver preparation stage combine multiple strands of drawn fibres into a single, uniform sliver. In the manufacture of linen-blend yarns, drawframe blending is the primary method for combining flax slivers with cotton or polyester. This mechanical action occurs before spinning, ensuring that the different fibre types are distributed evenly along the longitudinal axis of the yarn.
Blending Operation
Draft rollers operating at differential speeds draw out the combined slivers, aligning the individual fibres parallel to each other while mixing them. Using drawframe blending rather than loose fibre mixing provides superior control over the final blend ratio of the linen yarn. When the slivers pass through the draft zone, they are squeezed and stretched, which helps disperse any clumps of flax or synthetic fibres that could cause thick and thin spots.
This careful regulation produces a yarn with high strength and a consistent appearance.
Yarn Uniformity
Mass variation in the final spun yarn is minimized when the constituent fibres are thoroughly integrated during drafting. Effective drawframe blending yields a balanced yarn that exhibits uniform dye absorption during finishing. This reduces the occurrence of striping or patchy areas in the finished fabric.
