: Industrial manufacturers often use a heat press to stabilize zipper length before it is sewn into high-precision garments. HOW TO REDUCE THE ZIP BULGE TUTORIAL | KIM DAVE
: High heat from a dryer can cause the cotton tape around a zipper to shrink while the rest of the garment does not, leading to a puckered effect. Fixes and Prevention: bulve.zip
: Occurs when a rigid zipper is sewn into stretchy fabric (like jersey or spandex) without stabilization. : Industrial manufacturers often use a heat press
: Shaping the center back seam of a pattern to match the body's curve rather than using a straight line. bulve.zip
: Pulling or stretching the fabric while sewing the zipper in can cause it to "wave" once released.