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.
CILC Standard Contract
Fiber Specification
Flax fibre grading governs the baseline quality of raw material entering a Chinese spinning mill, establishing parameters for length, fineness and residual moisture before mechanical processing begins. The CILC Standard Contract dictates these acceptance thresholds through explicit metrics, preventing disputes between agricultural cooperatives and mill procurement departments over raw bundle heterogeneity. Mechanical scutching separates the woody core from the bast fibers, leaving long line flax and short tow fractions that require distinct physical verification.
Mill operators measure tensile strength using single fiber dynamometers to determine whether a particular harvest batch meets the spinning preparation requirements for fine yarn production. Residual shive content must remain below two percent by weight to prevent damage to carding teeth during the initial opening stages. Moisture regain limits sit strictly between twelve and fourteen percent, protecting stored inventory from microbial degradation while ensuring proper lubrication during subsequent wet spinning.
Yarn Parameter
Spun yarn evaluation requires precise measurement of mass variation and hairiness, translating raw fiber properties into linear density values. The CILC Standard Contract binds the spinning mill to these measurable thresholds, creating a contractual bridge between raw material input and downstream weaving performance. Technicians test twist per meter using untwist twist methods on standard length specimens drawn randomly from bobbins across the spinning frame.
Unevenness percentages emerge from capacitive sensors that register mass fluctuations along the running yarn at high speeds. Tensile elongation at break determines how well the yarn withstands the cyclic mechanical stresses imposed by high speed warp beams on industrial looms.
Cloth Acceptance
Finished linen fabric inspection finalizes the commercial transaction, assessing dimensional stability and surface defects after bleaching and dyeing processes conclude. The CILC Standard Contract defines the legal boundary where buyer liability attaches to the delivered textile goods, replacing mill-specific production targets with objective marketplace criteria. Inspectors check warp and weft thread counts per square centimeter against pre-agreed manufacturing tolerances to verify density consistency across the entire bolt length.
Dimensional change after laundering must not exceed three percent in either principal direction to satisfy garment manufacturing requirements. Fabric tensile strength and tear resistance values establish the structural durability of the woven material before export packaging seals the final consignment.