Q: Why are teeth missing from a new zipper?
Missing teeth on a new zipper are a moulding or assembly escape, but an empty position can also be created in the garment factory. Locate each gap and look at the root of the missing element before deciding who is responsible.
- Count and record the exact position of each gap along the tape.
- Check whether the tape shows a clean moulded root or a torn one; a torn root suggests mechanical damage after moulding.
- Inspect the slider path and the cutting table for a blade or presser that could have knocked teeth out.
- Compare the gap pattern with the maker's packing, because damage in transit often clusters at one end.
- Photograph the empty position beside a ruler for the claim.
A clean missing tooth in new stock is a supplier escape and should be sorted by lot. Teeth removed during trimming or pressing are a process issue, and the fix is at the machine rather than in the zipper specification. Keep the carton label, since lot traceability decides how far the check must go.