Woven Fabric Weight Tolerances and Linear Metre Yield Calculations
Reconcile woven fabric purchases by calculating linear yield from conditioned mass and usable cuttable width under ISO 3801 and ISO 139 parameters.
Usable Cuttable Width
Dimension Assessment
Commercial width specifications determine the net width of a fabric roll that is free of edge defects and suitable for pattern layout. Pattern makers rely on usable cuttable width to ensure that no part of a garment piece falls onto distorted selvages or pin holes. This measurement defines the critical boundary for marker creation in computerized cutting systems.
It applies to all flat-rolled fabrics, but ceases to apply to raw yarn or circular-knit tubes.
Width Measurement
Inspectors measure the distance between the inner edges of the selvages across the width of the roll. This measurement is taken at several points along the roll to account for any width variation. The narrowest point measured becomes the official width for that roll.
This ensures that the marker will fit the entire roll length.
Cutting Efficiency
If the fabric is cut without verifying this width, pattern pieces near the edges may contain holes or distorted weave patterns. These defective pieces must be re-cut, causing waste and slowing down production. Using the narrowest measured width prevents these costly disruptions.
This keeps the cutting line running smoothly.
Weaving Adjustment
Weaving mills must maintain consistent yarn tension across the width to avoid shrinkage or necking during finishing. A sudden narrow section in a roll makes it unusable for a standard marker. Controlling this dimension during production is essential for high-yield garment manufacturing.