Case Study: Custom Pearl Button for a School Uniform Buyer in Chile
Source:Durable PET Stickers /
Time:2026-09-18
Pearl Button for a School Uniform Buyer in Chile
A School Uniform Buyer approached us with a pearl button requirement for the Chile 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
- Shade drift between the approved lab dip and the bulk lot
- Cartons packed to the factory ratio instead of the buyer's size ratio
- A zipper puller that broke under pull test at the warehouse
What we specified
| Item | Pearl Button |
|---|---|
| Client type | A School Uniform Buyer |
| Market | Chile |
| Order volume | 50,000 pieces across 6 specifications |
| Base material | Brass |
| Standard size | 8# Gauge |
| Finish | Rainbow Iridescent Finish |
| Sampling rounds | 4 |
| Delivery window | 10 weeks from PO to ex-factory |
| Compliance | ISO 12947 Abrasion Resistance |
How it was resolved
- We rebuilt the specification around Brass and locked the tolerance before bulk.
- The finish was moved to Gunmetal Finish 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 10-week window.
- Unit cost held within 4.5% of the original quotation.
- Inspection-related rejection stayed under 0.5%.
- 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?
If you are comparing suppliers, send us the spec they quoted against. We will quote the same spec and show you where the difference sits.
