Fundamental Linen Lea Conversions and Metric Yarn Calculations
Linen Lea converts to Metric count via NeL multiplied by 0.604772, while direct Tex equals 1653.52 divided by NeL, adjusted for 12% moisture regain.
Greige Fabric Gsm
Unfinished Weight
Fabric weight density defines the mass per unit area of woven material before it undergoes dyeing or bleaching. Weaver laboratories use greige fabric gsm to evaluate the raw density of linen cloth straight from the loom. This measurement is registered on the gray inspection report as a primary checkpoint for structural accuracy.
It represents the starting point for all subsequent finishing calculations in the mill.
Mass Determination
The testing protocol requires cutting a specific circular sample of one hundred square centimeters using a calibrated specimen cutter. Operators weigh this circular piece on an electronic balance and multiply the weight by one hundred to obtain the grams per square meter. In Chinese linen mills, this procedure is executed across five different spots of the fabric roll to obtain a reliable average.
The weaver records these values to verify warp and weft yarn density against the original loom settings. This step ensures that the amount of yarn used per meter of fabric matches the chemical dye absorption calculations.
Finish Allowance
Loom state measurements must account for the shrinkage and weight changes that occur during the scouring and finishing processes. When greige fabric gsm is too low, the finished cloth will fail the buyer’s minimum thickness criteria. If it is too high, the fabric will be too heavy for the clothing market.
Finishing managers use these values to adjust the chemical bath duration and the tension on the stenter frames to hit the target weight.