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.
Width Tolerance Bands
Dimension Limit
Dimensional control standards specify the acceptable range of variation for fabric roll width relative to the contractually agreed target. Brands use width tolerance bands to ensure that incoming rolls can be processed on computerized cutting tables without adjusting pattern layouts. This metric defines the upper and lower limits of acceptable width variation.
It applies to all flat-rolled fabrics, but does not apply to narrow trims or loose yarns.
Standard Limit
A typical tolerance band allows for a deviation of plus or minus one inch from the nominal width. If a roll falls below the minimum width, it must be rejected because the cutting marker will not fit. If it is wider than the maximum, it may cause issues with the fabric guiding systems on the cutting table.
Staying within the band is necessary.
Finishing Control
The width of the fabric is locked in during the drying and curing process on the tenter frame. Operators must monitor the width continuously and adjust the frame’s rails to stay within the tolerance bands. Regular width measurements along the roll ensure that the fabric remains uniform from start to finish.
Commercial Dispute
Rolls that fall outside the agreed tolerance bands are a common cause of price adjustments and rejections. Having clear tolerance limits in the contract prevents disputes and ensures that the factory can use the fabric efficiently. This brings predictability to the manufacturing process.