Case Study: Custom Reverse Coil Zipper for a Military Supply Contractor in Peru

Reverse Coil Zipper for a Military Supply Contractor in Peru

A Military Supply Contractor approached us with a reverse coil zipper requirement for the Peru 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

• Lead time quoted without the plating or dyeing sub-process
• An interlining that bubbled after the first press
• Reorders that quietly changed supplier and changed the hand feel

What we specified

How it was resolved

1. We rebuilt the specification around Acrylic and locked the tolerance before bulk.
2. The finish was moved to Sandblasted Finish after strike-off tests showed better durability.
3. A pre-production sample was approved and retained as the golden reference.
4. Production ran with in-line inspection and a mid-run photo report.
5. Cartons were packed to the client's own barcode and ratio specification.

Result

• 20,000 pieces delivered inside the 6-week window.
• Unit cost held within 1.5% 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

Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.

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.