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.
Dressing Efficiency
Sizing Yield
Warp yarn preparation metrics quantify the proportion of size mixture retained on flax warp yarns relative to the theoretical pick-up calculated during the slashing process. Flax fibers require liquid sizing to smooth surface hairiness and protect against abrasive friction on rapier looms. High dressing efficiency indicates that starch or polyvinyl alcohol compounds have penetrated the yarn bundle without creating excess brittle encrustation.
Mill logs record this value to evaluate size box bath temperature and roll pressure during high-speed warp preparation. Operational limits ensure that sizing stays within eight to twelve percent dry add-on weight.
Weaving Protection
Mechanical stress during high-speed rapier weaving causes poorly sized linen warps to fray and snap under high tension. Achieving optimal dressing efficiency minimizes warp breakage rates on the loom shed, directly reducing loom downtime and fabric defect counts. Mill quality reports link stable dressing values to consistent humidity control in the slashing room.
Uneven liquor pickup causes variable friction coefficient along the warp sheet.
Quality Threshold
Substandard pick-up allows yarn fibers to separate under heavy reed impact. When dressing efficiency drops below established mill baselines, warp ends break rapidly during shedding, generating dense lint buildup and stop-motion trips across the weaving floor. Excessive size deposit makes the yarn rigid, causing brittle fractures during harness movement.
Buyer specifications require sizing residues to wash out completely during fabric desizing and bleaching without leaving hydrophobic spots.