Closed Width: Closed Width (拉合宽度)
The overall width of a closed zipper measured across both tapes from outer edge to outer edge. It sets the space the zipper occupies in a seam and is a basic reference for pattern making, sewing allowance and trim placement. Closed width depends on tape width, tooth height and seam position. Consistent closed width keeps the finished opening flat and prevents puckering or a visible mismatch between left and right sides.