Determining Non-European Fiber Substitution Limits in Transferred Yarn Stocks
Non-European flax fiber substitution in transferred yarn stocks is capped at zero percent for pure European Flax and Masters of Linen claims.
Linear Density Nm 26
Metric Classification
Indirect count metrics in the metric number system define the length in metres of single-gram yarn masses. Within commercial linen manufacturing, linear density Nm 26 represents a medium-coarse count equivalent to thirty-eight point four six tex or approximately fifteen point five lea. This yarn count forms the structural backbone for mid-weight apparel fabrics, table linens and home upholstery textiles.
The metric applies to dry-spun or wet-spun flax yarn prior to sizing, dyeing or finishing treatments.
Spinning Practice
Flax spinning frames target this count range by balancing roving draft ratios with spindle rotational speeds. Wet spinning lines running dew-retted European or Chinese flax tow adjust draft zone roller distances to draw the softened bundle to twenty-six metres per gram. Producing linear density Nm 26 demands roving weights calibrated precisely against flyer twist multipliers, maintaining tensile strength near sixteen to eighteen centinewtons per tex.
Variations in fibre fineness within the roving package cause count deviations across spindles. Mill testing rooms pull skeins on reeling drums to weigh one-hundred-metre leas on analytical balances, recording deviations on quality control charts. Moisture regain must be standardized to twelve percent before weighing, because dry flax sheds mass and falsifies metric count calculations.
Ring frame settings, including traveler weight and spindle speed, are adjusted whenever average yarn count strays beyond two percent of target.
Trade Specification
Commercial contracts specify count tolerances alongside allowable coefficients of variation for linear density Nm 26 deliveries. Buyers enforce acceptance thresholds typically restricting count coefficient of variation below three point five percent on lot inspection certificates. Fabric designers pair this yarn count with specific reed plans to achieve standard finished fabric weights around two hundred grams per square metre.