Fibre Measurement
Flax mill quality control monitors the variance in group density to determine the uniformity of raw material prior to spinning. Bundle width distribution identifies the span of individual fibre groupings within a processed lot. Operators analyze this spread to predict the performance of drafting equipment during subsequent mechanical processing.
Wide ranges often cause uneven yarn diameters and higher breakage rates in high speed spinning frames. Precision in this metric dictates the adjustability required for rotor settings.
Process Impact
Mechanical separators pull plant material into thin streams to remove woody pith and shive. Bundle width distribution occurs when these streams fail to maintain a consistent diameter during the extraction phase. Variations beyond the acceptable tolerance trigger machine stoppages or manual intervention to recalibrate the cleaning combs.
Uniform outcomes rely on the stability of the fibre supply entering the hackling machines.
Acceptance Criteria
Purchase agreements define specific thresholds for fibre consistency to ensure the mill achieves stable production outputs. Quality inspectors verify bundle width distribution against the laboratory samples taken from every pallet before final intake. Deviations from the target mean result in downgraded classification regardless of the total fibre mass present in the shipment.
Consistent readings across multiple samples indicate a process capable of meeting high grade spinning requirements.
