Calculating Greige Fabric Yield from Loom Speed and Sett
Calculate linear greige yield by dividing net picks per hour by pick density, adjusting reed width and warp length for crimp contraction.
Selvedge Waste Allowance
Margin Calculation
Excess material beyond the intended width of a bolt or roll of cloth constitutes the selvedge waste allowance. This selvedge waste allowance accounts for the sacrificial edges required to hold tension during mechanical operations on a loom. Mills determine the measurement by assessing the width of the yarn loops anchored at the sides of the finished product.
Proper accounting for these non-usable sections prevents shortages in yield projections for linen fabric.
Production Adjustment
Technical requirements during the finishing stage necessitate this deliberate loss of fabric. Engineers calculate the expected trim based on the loom type and the density of the flax yarns. If a plant fails to include this allowance in the initial work order, the final output lacks the width needed for pattern cutting.
A standard buffer ensures that the edges remain stable under the pressure of industrial rollers.
Commercial Reconciliation
Contractual documents between a supplier and a buyer define the percentage of width reduction acceptable upon arrival at the destination. Buyers compare the gross width of the fabric against the net usable width identified in the order specifications. If the selvedge waste allowance exceeds the agreed limit, the buyer treats the extra edge as non-conforming goods rather than usable yardage.
An accurate allowance reduces disputes over the usable surface area of high-value linen deliveries.