Case Study: Custom Plastic Zipper for a Hat and Cap Producer in Spain
Source:Indoor Water Features /
Time:2026-09-18
Plastic Zipper for a Hat and Cap Producer in Spain
A Hat and Cap Producer approached us with a plastic zipper requirement for the Spain 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
- Elastic that lost recovery after three washes
- A zipper puller that broke under pull test at the warehouse
- An interlining that bubbled after the first press
What we specified
| Item | Plastic Zipper |
|---|---|
| Client type | A Hat and Cap Producer |
| Market | Spain |
| Order volume | 10,000 pieces across 4 specifications |
| Base material | Polyester |
| Standard size | 3# Gauge |
| Finish | Enzyme Wash Finish |
| Sampling rounds | 2 |
| Delivery window | 10 weeks from PO to ex-factory |
| Compliance | REACH SVHC Screening |
How it was resolved
- We rebuilt the specification around Polyester and locked the tolerance before bulk.
- The finish was moved to Yarn-Dyed 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
- 10,000 pieces delivered inside the 10-week window.
- Unit cost held within 3.0% of the original quotation.
- Inspection-related rejection stayed under 2.0%.
- The specification is now on file, so reorders reproduce the approved sample.
What we would repeat
Fix the specification count early. Adding variants after production starts is the most expensive change a client can request.
Planning something similar?
Share the programme details and we will propose two alternatives — one optimised for unit cost, one for lead time — and let you choose.
