Case Study: Custom Reverse Coil Zipper for a Promotional Product Agency in Argentina
Source:Iridescent Crystal Beads /
Time:2026-09-18
Reverse Coil Zipper for a Promotional Product Agency in Argentina
A Promotional Product Agency approached us with a reverse coil zipper requirement for the Argentina market. The brief was specific: a defined look, a hard launch date and a unit cost that had to survive freight and duty. This case study records what was specified, what went wrong in sampling and how the bulk order was delivered.
The challenge
- Shrinkage that only showed up after the first wash
- Reorders that quietly changed supplier and changed the hand feel
- An interlining that bubbled after the first press

What we specified
| Item | Reverse Coil Zipper |
|---|---|
| Client type | A Promotional Product Agency |
| Market | Argentina |
| Order volume | 100,000 pieces across 2 specifications |
| Base material | Nickel Silver |
| Standard size | 6 mm Width |
| Finish | Epoxy Doming |
| Sampling rounds | 3 |
| Delivery window | 5 weeks from PO to ex-factory |
| Compliance | REACH SVHC Screening |
How it was resolved
- We rebuilt the specification around Nickel Silver and locked the tolerance before bulk.
- The finish was moved to Antique Brass Plating after strike-off tests showed better durability.
- A pre-production sample was approved and retained as the golden reference.
- Production ran with in-line inspection and a mid-run photo report.
- Cartons were packed to the client's own barcode and ratio specification.

Result
- 100,000 pieces delivered inside the 5-week window.
- Unit cost held within 1.5% of the original quotation.
- Inspection-related rejection stayed under 1.5%.
- The specification is now on file, so reorders reproduce the approved sample.
What we would repeat
Keep one accountable owner on both sides. Most delays come from hand-offs, not from machines.
Planning something similar?
Tell us the item, the quantity and the delivery window. We will quote it with the sub-processes named, so the lead time you approve is the lead time you get.



