Thermal Value
Industrial steam drying parameters dictate the rate of moisture extraction from sized warp yarn sheets before they are wound onto the weaver’s beam. Maintaining the correct drying cylinder temperature prevents both under-drying and over-drying, which can compromise the structural integrity of flax fibers. If the heating cylinders remain too cold, residual moisture promotes mildew and reduces the adhesive strength of the starch size during subsequent loom operations.
Weaving Impact
Poor moisture control in the slashing room directly elevates yarn friction and causes high break rates during weaving. Proper management of the drying cylinder temperature ensures that the protective film remains ductile and does not become brittle. When the flax yarn is dried to its optimal moisture regain, typically between eight and twelve percent, it retains the flexibility required to withstand the high mechanical stresses of rapid shedding.
If the temperature exceeds the dry point, the starch becomes brittle and flakes off.
Inspection Outcome
Fabric inspectors at the finishing mill document the consequences of improper thermal drying by recording warp break patterns in the loom room log. Variations in drying cylinder temperature lead to irregular size film distribution, which is detected during grey cloth audits. These records establish that tight thermal control prevents the premature cracking of the protective starch layer on the yarn.
