| 摘要 |
A zip-fastener in which the hollow lower face of each of the interlocking teeth, which are directly molded on the zipper tapes, has two recessed retaining portions at two opposite vertical lateral sides, top and bottom transverse thread grooves disposed at top and bottom sides and respectively connected between the recessed retaining portions, and stitches are sewn on zipper tapes around the recessed retaining portions and transverse thread grooves of each tooth to fixedly secure the teeth to the zipper tapes. |
