Mass Balance Calculations and Moisture Adjustments in Flax Fibre Dressing
Commercial settlement of flax fibre dressing requires converting gross scale mass to oven-dry mass under ISO 6741 using standard regains of 12% for line and 13% for tow.
Bundle Stelometer Strength
Fiber Tension
Mechanical resistance measured on a clamped flax sliver determines how prepared raw material is for high-speed wet spinning on drafting rollers. Bundle stelometer strength provides the specific breaking load figure recorded during raw material intake testing at Chinese flax mills. Technicians mount standard weight fiber bundles into the testing apparatus to pull the material until rupture occurs under controlled tension.
The resulting breaking load value appears directly on the raw material delivery sheet alongside moisture content and staple length metrics.
Breakage Threshold
Tensile limits dictate the drafting speed applied during preparatory roving and spinning operations on wet ring frames. Bundle stelometer strength establishes the maximum draft force operators can impose before filament rupture disrupts yarn continuity. Low breaking thresholds force spinning mills to reduce traveler speeds and increase water bath temperatures to soften pectin bonds between individual elementary fibers.
High breaking loads allow mills to apply aggressive drafting drafts that reduce roving weight without creating excessive ends down on the spinning frame. Spinning supervisors adjust machine settings according to this metric to maintain consistent yarn evenness throughout long production runs.
Mill Acceptance
Procurement contracts between flax growers and mill purchasing departments rely on standardized tenacity thresholds to determine raw material pricing and final grade assignments. Bundle stelometer strength separates acceptable spinning material from sub-standard lots destined for coarser cordage production or outright rejection. Mill quality control ledgers record these tensile values to verify that delivered flax meets the specific physical standards required for fine linen yarn manufacture.
Buyers establish minimum force requirements in purchase agreements before shipments leave the retting and scutching facility. Premium export contracts depend entirely on these mechanical test results to guarantee downstream fabric performance during weaving and finishing.