Tow Fiber

Quality Standard

Mechanical processing determines the cleanliness and length uniformity for each lot. Mills measure this input against standardized cleanliness parameters to calculate the expected waste during carding. A high density of woody shives or vegetable particles lowers the grade because the material requires extra cleaning steps before drawing.

Spinners apply specific criteria for these secondary outputs to predict the loss percentage during the transition into roving.

Sorting Protocol

Technicians group these residues into classes based on the diameter and average length of the strands. Grading occurs inside the scutching facility where the distinction between line flax and lower segments becomes rigid. The facility records the classification on a supply sheet that accompanies the bale to the spinning plant.

Acceptance criteria for buyer contracts define the maximum allowable moisture and foreign matter limits for each specific lot. Physical assessment at the point of receipt verifies if the delivery matches the internal processing requirements of the factory.