Which are the possible defects of punching?
1. Incorrect shapes on the edge
2. Incomplete, deviated, or doubled perforations; fibers pulled off the edge of the perforation; tearing the material between the perforations
3. The folded edge does not have a continuous line or uniform appearance; the width after bending is uneven; the edge has detached or thickened portions
The stitching machine operator have to identify any stitching fault that may occur due to poor machine performance?
1. TRUE
2. FALSE