Comb Sorter Staple Profiling for Long-Staple Linen Yarn Qualification
Comb sorter profiling establishes staple length distribution, short fibre content, and drafting bounds to guarantee target yarn counts and fabric yield.
Dressed Tow
Combed Fiber Classification
Short flax fibers obtained from the combing of scutched flax represent a clean raw material that is free of shives and coarse pieces. Spinning mills refer to this processed material as dressed tow to distinguish it from coarse waste fibers. This material consists of parallelized fibers of moderate length that can be spun into medium-grade yarns.
Cleanliness and length consistency are the primary criteria that determine its commercial value.
Hackling Refining Stage
Processing of raw tow involves passing the fibers through successive banks of metal pins on a hackling machine to comb out impurities and wood fragments. The combing action straightens the shorter fibers while removing the very short unspinnable fuzz and dust. This progressive refining step yields a uniform bundle where the fibers are aligned along their longitudinal axis.
Proper combing is essential because any remaining wood fragments or shives will cause thick spots and weak points in the drawn sliver. The resulting refined bundle is baled and graded based on its fiber length and cleanliness. To ensure consistent quality, mills track the yield of this combing process as it directly influences the material recovery rate and the yarn cost structure.
Spinning Preparation Utility
Drawing and carding systems process this combed material into a sliver that is suitable for dry or wet spinning. Yarns spun from this material are used to produce canvas, upholstery fabrics, or heavy apparel linens. Because the fibers are shorter than long line flax, the yarn has a slightly hairier surface and higher bulk.
This texture is ideal for traditional coarse fabrics that require high absorption and a rugged natural appearance.