Dimensional State
Textile measurements taken immediately after production capture the raw dimensions of a fabric before finishing processes cause shrinkage. In the production of linen, off-loom width refers to the horizontal measurement of the cloth as it is released from the tension of the weaving machine. This value represents the starting point for calculating all subsequent dimensional changes during processing.
Processing Shrinkage
Relaxation and chemical treatments cause the linen yarns to contract when the tension of the loom is released. The off-loom width of the fabric is always wider than the finished width, as flax fibers shrink substantially when exposed to moisture during bleaching or dyeing. This shrinkage can range from three to eight percent depending on the yarn density and the weave structure.
Weaving mills must plan for this difference by adjusting the density of the warp and using wider reeds to meet the buyer’s specified dimensions.
Quality Inspection
Continuous monitoring of the cloth as it leaves the take-up roller ensures that the warp tension remains uniform during the run. Variations in off-loom width indicate mechanical issues with the temple rollers or inconsistent tension on the warp beam. These early measurements allow technicians to correct loom settings before a large volume of sub-standard cloth is produced.