Case Study: Custom Invisible Zipper for a Yacht Interior Studio in Singapore
Invisible Zipper for a Yacht Interior Studio in Singapore
A Yacht Interior Studio approached us with a invisible zipper requirement for the Singapore 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
- A zipper puller that broke under pull test at the warehouse
- A spec that lived in an email instead of a tech pack
- Reorders that quietly changed supplier and changed the hand feel

What we specified
| Item | Invisible Zipper |
|---|---|
| Client type | A Yacht Interior Studio |
| Market | Singapore |
| Order volume | 100,000 pieces across 6 specifications |
| Base material | POM Plastic |
| Standard size | 15 mm Width |
| Finish | Epoxy Doming |
| Sampling rounds | 4 |
| Delivery window | 5 weeks from PO to ex-factory |
| Compliance | JIS L Standards |
How it was resolved
- We rebuilt the specification around POM Plastic and locked the tolerance before bulk.
- The finish was moved to Anodised 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
- 100,000 pieces delivered inside the 5-week window.
- Unit cost held within 1.5% of the original quotation.
- Inspection-related rejection stayed under 1.0%.
- The specification is now on file, so reorders reproduce the approved sample.
What we would repeat
Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.
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.