Cyclic Tensile Stress Decay in Wet Spun Flax Sized Yarns
Dynamic tension decay in sized wet spun flax yarns is minimized by controlling size penetration to 25 percent and keeping dynamic strain amplitudes below 1.2 percent.
Polyvinyl Alcohol Blend
Sizing Material
High solubility compounds create the chemical foundation for warp yarn stabilization during industrial flax processing. Polyvinyl alcohol blend products function as aqueous coatings that coat linen fibres to increase abrasion resistance during the high tension of mechanical weaving. This water-soluble application remains on the yarn until the desizing stage where hot water removes the agent to prepare the fabric for dyeing or finishing.
The integrity of the protective film governs the friction coefficient of the warp strands and dictates the frequency of loom stoppages.
Production Grade
These chemical solutions sit within the preparatory stage of mill operations where technical staff evaluate the viscosity of the raw liquid before tank immersion. Spinning logs record the specific dilution ratios applied to batches of flax fibre to ensure that uniform coating thickness persists across every warp beam. Mill standards distinguish between standard sizing agents and the modified versions required for high speed rapier looms.
Acceptance criteria for the sizing film depend upon the measured pick-up percentage recorded in the technical specification document provided to the supply chain manager.
Application Performance
Heat sensitivity dictates the efficiency of the desizing cycle because the chemical matrix must remain stable under ambient mill conditions while reacting rapidly to heated wash liquors. Excess moisture in the drying section can degrade the film before the loom cycle finishes, which leaves the yarn prone to snapping. Precise control of the concentration levels during the impregnation phase ensures that the final fabric achieves the required hand and finish characteristics requested by the garment manufacturer.
Proper chemical formulation reduces waste by preventing the film from flaking off the yarn during the mechanical stress of shed formation.