Printed Seersucker can be printed by a printing method, and two methods are currently used.
1. Soda printing method: use a printing roller engraved with a straight pattern to print a 30-35% (36-400Be) NaOH solution on a single-roll printing machine, and then ventilate and dry in a loose condition, and the cotton fibers will be violent. Shrinkage and the cotton fibers at the unprinted (unprinted alkali) place are forced to shrink into uneven bubbles, which are then washed loosely and washed with caustic soda. This method can obtain a strip-shaped bubbles bubble, the width of the strip varies with the engraving of the fountain. As the alkali-shrinked cotton fibers continue to stretch during wearing, the bubbles are also flattened.
2. Printing resin method: First print a water repellent agent on the cotton fabric, such as the water repellent agent FTC (belonging to the fatty acid melamine ester structure), to make the printing area water repellent. After drying, the fabric is padded in caustic soda solution and then ventilated. Where the water repellent is printed, the caustic soda solution cannot enter, and the cotton fibers in the unprinted part shrink in the lye solution so that bubbles are formed in the unprinted part so that the printing can be done colorful bubble pattern.