Sizing operation is dipping the warp yarn into the sizing solution where all the process parameters like concentration, temperature and viscosity are under control, and then squeezing, drying and beaming onto the warp beam. Sizing liquor consists of mainly starch, wax and other additive chemicals and is cooked at certain temperature and process conditions.

As a result the warp yarns are covered with a protective layer of film and ready for weaving. The object of sizing is to prepare the warp yarns for an efficient and high quality weaving operation.