Knot Passage and First-Metre Weaving Quality
topic
The first metre of fabric woven after warp tying and pulling contains the tying knots that produce visible thickened points in the fabric that cannot meet customer quality specifications, requiring this initial fabric section to be designated as waste or sample material separate from the production-quality fabric that begins after all knots have passed through the fabric, with knot diameter and yarn count determining how visible knot passages are in the woven fabric and how much initial fabric must be classified as knot-quality.
Role
Manages the inevitable quality impact of warp tying on the initial production fabric section by anticipating and designating the knot-affected fabric appropriately in production planning, with the length of knot-affected fabric being determined by the number of warp repeat lengths required to advance all knots from the shed position through the fell line, governed by warp take-up setting and the length of warp advanced per pick insertion cycle.