Impact of Cellulose Microfibril Angle Dispersion on Hackling Yield
Cellulose microfibril angle dispersion drives transverse cell wall cleavage under pin shear, reducing dressed long line flax yield by up to 16 percentage points.
Dry Spinning Tow
Fiber Classification
Coarse flax tow strands undergo carding and drafting without hot-water softening to produce textured yarns for industrial and heavy apparel fabrics. Short fibers separated during scutching form the primary raw material for this process. Processing dry spinning tow bypasses the warm water immersion tanks used in wet spinning, keeping pectin binder intact between individual ultimate fibers.
The resulting yarn exhibits high stiffness, visible slubs, and elevated linear density compared to wet-spun equivalents. Mill batch sheets record fiber length distribution and trash content prior to draw frame sliver formation. Production runs rely on precise carding pin density to open fiber clumps without shortening individual fiber length.
Drafting Behavior
Fiber bundles lack the mobility found in warm-water-treated flax sliver. Spinning dry spinning tow requires specialized draft zones with wider roller settings to accommodate coarse bundle stiffness and prevent draft waves. High friction between unsoftened fiber walls demands higher twist factors during ring spinning to maintain yarn cohesion.
Breakage rates increase when ambient relative humidity drops below sixty-five percent in the spinning hall.
Market Criterion
Finished coarse yarns serve specific industrial uses such as upholstery backing and decorative furnishings. Fabric specs mandate strict limits on thick places and nep counts per kilometer. Commercial contracts define dry spinning tow limits based on shive percentage and cleaning loss during carding.