: 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:
: 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 bulve.zip
: Occurs when a rigid zipper is sewn into stretchy fabric (like jersey or spandex) without stabilization. : High heat from a dryer can cause
: A straight zipper placed on a curved seam, such as the lower back, often creates a bulge because it doesn't follow the natural "S" curve of the spine. : A straight zipper placed on a curved
: Shaping the center back seam of a pattern to match the body's curve rather than using a straight line.
In fashion and sewing, a "zip bulge" is a common issue where a zipper does not lay flat against the body, causing an unsightly curve or bump.