BISFA Standard

Yarn Inspection

Spun linen yarn undergoes continuous quality verification according to the BISFA Standard, measuring linear density, twist direction and tensile strength before the material reaches commercial looms. Laboratory technicians test conditioned skeins on a dynamometer to determine breaking force, ensuring yarn batches withstand the high mechanical tensions exerted by modern high speed weaving machinery. Count variations outside permitted tolerances cause immediate downgrading of the lot, protecting downstream weavers from warp breaks during fabric formation.

Each production shift records twist levels per metre to verify that yarn integrity matches the technical requirements specified in the sales contract.

Fabric Classification

Finished linen cloth is graded under the BISFA Standard by assessing warp and weft densities, mass per unit area and dimensional stability after washing. Fabric defects are recorded on inspection tables using standardized fault classification systems, separating export quality yardage from lower grades intended for domestic processing. Shrinkage limits defined within the protocols determine whether wet finishing treatments require adjustment before final tentering and rolling.

This unified testing framework removes ambiguity from international textile trade by giving buyers and mill managers identical criteria for measuring finished linen performance.