Fraction Distribution
Mechanical segregation of short and tangled bast fibers extracted during scutching and hackling divides secondary raw materials into discrete processing categories. Within industrial flax complexes, tow fiber allocation determines whether carded short fibers enter wet-spinning preparatory lines or dry-spinning systems. Scutching tow contains higher cortical shive content, requiring intensive mechanical opening and carding, while hackling tow exhibits superior cleanliness and length uniformity.
Technical directors balance mean fiber length and residual shive percentage to assign raw bales to specific yarn production schedules. The protocol governs initial raw fiber sorting but ceases once slivers undergo chemical rove treatment or spinning draft blending.
Spinning Optimization
Processing economics depend heavily on maximizing the commercial yield extracted from every ton of scutched flax straw. High-grade hackling tow undergoes specialized carding and combing to spin medium-count yarns between twelve and twenty-four lea for upholstery or heavy shirting fabrics. Lower-grade scutching tow proceeds directly to dry-spinning frames that produce coarse industrial twines and agricultural ropes.
Effective tow fiber allocation directs raw materials toward yarn counts they can support without causing excessive end breaks on the spinning frame. Mill blending sheets log mean fiber span length and trash content to maintain uniform roving weights across fluctuating seasonal fiber harvests.
Raw Utilization
Warehouse allocation records log assigned bale quantities alongside intended spinning counts. Systematic tow fiber allocation guarantees that lower-grade bast fractions yield profitable industrial yarns without compromising the operational efficiency of fine-count wet spinning lines.