Determining Flax Staple Profile Using Manual Comb Sorting
Manual comb sorting by ISO 2370 isolates technical flax bundle length profiles to prevent drafting waves, control short fibre content, and enforce purchase contracts.
Gravimetric Sorter Diagram
Mass Distribution
Analytical data from a gravimetric sorter diagram captures the specific weight variance across a randomized sample of flax fibre batches. Each plot visualizes the density profile of the stalks to confirm their consistency prior to mechanical separation. Technicians rely on these visual outputs to verify that the raw material meets the technical requirements of the primary cleaning machines.
Discrepancies in the curves indicate a failure in the initial field cleaning or the presence of excessive organic residue that will interrupt the downstream spinning process.
Sorting Variance
Deviations from the baseline curve signify uneven fibre quality and predict potential breakage rates during the heckling phase. Spinning mills adjust the feed speed to accommodate the measured density shifts, preventing the accumulation of short fibres in the carding equipment. A steep slope in the distribution line identifies dense clusters of fibre that require additional moisture conditioning before the material enters the drafting zone.
Constant monitoring of these shifts prevents machine jams that would otherwise halt production cycles for extended maintenance.
Quality Threshold
Commercial acceptance of flax supply depends upon the alignment of this diagram with the agreed specifications held in the purchase contract. Buyers mandate these test results to determine the precise fibre yield and to calculate the adjustment factors for the final invoice price. Disputed lots undergo a second analysis to validate the initial reading, ensuring that only material within the tolerated density range reaches the export stage.
This documentation proves the standard of the product and serves as the final arbiter for quality disputes in international trade.