Anti-Burst Treatment: Anti-Burst Treatment (防起拱)
A combination of pre-shrinking, tension control and shrinkage matching that prevents a sewn zipper from forming waves or puckers along the seam. The tape and the shell fabric are stabilised so both behave similarly during washing and pressing. Setting temperature, sewing tension, seam allowance and stitch length all contribute. Proper treatment keeps the opening flat, improves appearance and avoids complaints about wavy front plackets on garments.