Case Study: Custom Reverse Coil Zipper for a Supermarket Own-Brand Team in the United Kingdom
Source:Murano Glass Sculptures /
Time:2026-09-18
Reverse Coil Zipper for a Supermarket Own-Brand Team in the United Kingdom
A Supermarket Own-Brand Team approached us with a reverse coil zipper requirement for the the United Kingdom 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
- Reorders that quietly changed supplier and changed the hand feel
- Cartons packed to the factory ratio instead of the buyer's size ratio
- MOQ that was quoted per colourway rather than per style
What we specified
| Item | Reverse Coil Zipper |
|---|---|
| Client type | A Supermarket Own-Brand Team |
| Market | the United Kingdom |
| Order volume | 50,000 pieces across 2 specifications |
| Base material | Zinc Alloy |
| Standard size | 5# Gauge |
| Finish | Sandblasted Finish |
| Sampling rounds | 4 |
| Delivery window | 6 weeks from PO to ex-factory |
| Compliance | EN 71-3 |
How it was resolved
- We rebuilt the specification around Zinc Alloy and locked the tolerance before bulk.
- The finish was moved to Glossy Enamel Coating 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
- 50,000 pieces delivered inside the 6-week window.
- Unit cost held within 4.5% 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?
Send the reference sample or tech pack and we will come back with a costed specification, a sampling timetable and the compliance documents your market requires.
