Verifying Scutching Yields and Fiber Alignment in Customs Entry Declarations
Verify scutching yield metrics and fiber alignment parameters to defend Chapter 53 customs entry declarations and eliminate origin liability.
Comb Sorting
Sorting Procedure
The removal of long-range irregularities within a fibre batch occurs through a systematic reduction of gap sizes between compared elements. Comb sorting operates by repeatedly reducing a shrinkage factor to compare items separated by large gaps until the gap closes to a unit distance. This method accelerates the convergence of unordered fibre lengths toward a stable sequence when compared to basic swap-based algorithms.
Gap Efficiency
Large gaps allow the algorithm to displace misaligned flax fibres across significant distances in a single operation. Smaller gaps then perform local adjustments to ensure the final arrangement meets the precise linear requirements of the spinning frame. Each reduction cycle depends on a shrink factor that typically diminishes by a constant fraction to maximize the throughput of the sorting process.
Efficiency drops once the gap size reaches one, as the remaining work consists of simple pairwise comparisons that require additional iterations to finish.
Acceptance Boundary
Quality managers apply this logic during the final fibre preparation stage to verify that the bale matches the tensile strength and uniformity specifications listed in the mill intake report. A uniform distribution of fibre lengths reduces breakage during high speed ring spinning by preventing excessive stress concentrations on thin sections. Differences between actual fibre alignment and the specified distribution indicate a failure in the mechanical adjustment of the rollers.
Proper calibration of these sorting cycles remains a requirement for achieving the high output consistency demanded by the export market for linen yarn.