Modal Fibre

Spinning Mechanics

Metering pumps force the cellulose xanthate solution through multi hole spinnerets submerged in an acidic coagulating bath containing sulfuric acid, sodium sulfate and zinc sulfate. Acid neutralization precipitates the regenerated cellulose instantly while zinc ions delay skin formation to promote a uniform cross section. Stretching rollers draw the freshly formed filaments upward by a controlled percentage to align molecular chains along the fibre axis.

Subsequent washing stages strip away residual sulfur compounds before the continuous tow passes through a drying chamber.

Tensile Properties

Dry breaking tenacity ranges from thirty six to forty four centinewtons per tex, establishing a distinct mechanical advantage over standard viscose staple. Wet tenacity retains approximately sixty percent of dry strength, allowing industrial laundry machines to process garments without structural degradation. Elongation at break hovers near fifteen percent, providing enough elasticity to withstand aggressive weaving loom tensions.

Modulus values remain high enough to prevent fabric sagging during prolonged consumer wear.

Dye Affinity

Open amorphous regions within the supramolecular structure permit rapid dye molecule diffusion during exhaust dyeing processes. Reactive dyestuffs form covalent bonds with cellulose hydroxyl groups, ensuring wash fastness ratings exceed industry baselines for semi synthetic regenerated materials. Uniform dye uptake prevents shade variation across large dye lot batches delivered to garment assembly plants.

Finished yarn surfaces exhibit low frictional coefficients that improve sewing efficiency on high speed industrial machines.