Case Study: Custom Sewing Thread for a Supermarket Own-Brand Team in Portugal

Sewing Thread for a Supermarket Own-Brand Team in Portugal

A Supermarket Own-Brand Team approached us with a sewing thread requirement for the Portugal 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
• Shade drift between the approved lab dip and the bulk lot
• A zipper puller that broke under pull test at the warehouse

What we specified

How it was resolved

1. We rebuilt the specification around Stainless Steel and locked the tolerance before bulk.
2. The finish was moved to Chrome Plating 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

• 10,000 pieces delivered inside the 4-week window.
• Unit cost held within 2.0% 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.