An invisible zipper is sewn in a different manner than other visible zippers. With an invisible zipper, you do not need to bother with topstitching on the finished zipper, but rather you install the zipper before the seam it is installed in is sewn.
Is an invisible zip different to a normal zip?
An invisible zipper is a zipper with very fine teeth. … These feet hold the zipper coil so that the stitching is properly placed to keep the zipper invisible. Unlike a regular zipper, when sewing in an invisible zipper, the seam is sewn after the invisible zipper is sewn.
How do you sew an invisible zipper Pfaff?
Attach the special Invisible Zipper Foot and select a straight stitch, center needle position and stitch length to 2.5 to 3.0 mm. Open the zipper and flatten the coil slightly with your thumb, so that the seam line between the tape and the coil becomes visible. Never iron the zipper.