Efficiency Index
Loom productivity and weave room efficiency are evaluated by calculating the frequency of machine stoppages over a standard production volume. This standardized unit is known as stops per million picks, and it provides a comparable measure of performance across different yarn batches and loom speeds. In linen mills, this metric helps to isolate the effect of yarn quality from mechanical loom faults.
Causes Tracking
Yarn breaks and loom stoppages are recorded by the control system to categorize weft-way and warp-way errors. High counts of stops per million picks on linen looms often point to low warp sizing quality or high hairiness in the wet-spun flax yarn. Sizing must be adjusted to protect the yarn from the abrasive action of the harness frames and the reed.
If the sizing is too brittle, the warp ends break frequently, which drives up the stop frequency and reduces the overall weave room output.
Mill Target
Weaving factories establish benchmark values for different fabric qualities to maintain profitability. Achieving a low number of stops per million picks ensures high loom utilization and minimizes labor costs for operators. Correct tension settings during warping and sizing are essential to stay within these industrial limits.
