Desizing Machinery and Enzymatic Processes
topic
Desizing removes the warp sizing agents applied before weaving through continuous pad-batch, jigger, or J-box processes using alpha-amylase enzymes at 50 to 65 degrees Celsius for starch size removal or hot water washing at 95 degrees Celsius for water-soluble synthetic sizes, with size removal efficiency verified by iodine spot test for starch and by fabric weight loss measurement confirming complete size extraction before scouring.
Role
Removes the hydrophobic sizing barrier that would prevent uniform chemical penetration during scouring and dyeing by restoring fabric wettability and dye accessibility, with incomplete desizing being one of the most common causes of unlevel dyeing and uneven chemical finishing uptake that produces visible patchiness in the finished dyed or finished fabric.
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