Yarn Treatment
Continuous beam-to-beam processing applies protective chemicals to a sheet of warp yarns before weaving. In slasher sizing, the warp yarn sheet is drawn from supply beams through a starch bath and squeezed by heavy rollers. This coating prevents yarn fraying and reduces breaks when the yarn is subjected to high tension on the loom.
It is the standard industrial method used to prepare single cotton yarns for the abrasive forces of high-speed projectile and air-jet looms.
Drying Phase
Moist warp sheets are guided around a series of steam-heated metal cylinders to dry the starch coating. The temperature must be controlled to prevent the coating from becoming too brittle or remaining too wet. Sensor systems monitor the moisture content of the yarn sheet as it exits the drying section.
Weaving Preparation
Dried warp sheets are separated by dividing rods and wound onto the final loom beam. This step prevents the individual yarns from sticking together and ensures that each strand can unwind freely during weaving. This preparation is essential for maintaining high loom speeds and reducing stop-time.
Waste Minimization
Chemical consumption and wastewater volume are controlled by recycling the leftover starch from the sizing box. This filtration process prevents chemical buildup and maintains the consistency of the sizing bath. Using the correct dosage reduces the chemical load in the finishing mill’s wastewater treatment plant.
