Brass Invisible Zipper for Jackets — Specification, Uses and Sourcing Notes
Brass Invisible Zipper for Jackets: Specification, Uses and Sourcing Notes
Brass Invisible Zipper is the version buyers specify for jackets when the base material is fixed by performance rather than by price. This entry sets out what the material actually changes, which specification to write into the tech pack, and where the cost sits — the three questions that decide whether the item passes bulk approval.
What it is
Brass gives invisible zipper its weight-to-strength ratio. In practice that means the trim behaves differently in cutting, in finishing and in wear: tighter tolerance is needed on the finished dimension. Buyers who specify the material up front avoid the most common failure — an item that looks right on the sample card and behaves differently in bulk.
Typical specification
| Item | Invisible Zipper |
|---|---|
| Base material | Brass |
| Standard size | 25 mm Width |
| Common finishes | Enzyme Wash Finish, Pearlescent Coating, Epoxy Doming |
| Processes | Screen Printing, Ultrasonic Welding, Digital Printing |
| Typical application | Jackets |
| Related applications | Bags, Sleepwear, Down Jackets, Jeans |
| Test standard | Sedex SMETA |
| Usual packing | 500 pieces per polybag, 2000 per carton |
Properties that matter in buying
- Dimensional stability — 2% allowance is built into the spec before cutting.
- Colour fastness — tested to Sedex SMETA on the actual base material, not on a substitute.
- Mechanical performance — abrasion resistance after 30 cycles or washes.
- Compliance — Sedex SMETA documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Gloves
- Scarves
- Workwear
- Baby Clothing
- Socks
- Bras
How to specify it
- Name the base material in the tech pack, not just the item.
- Fix the size and tolerance in writing before sampling starts.
- Approve a counter sample made from the actual bulk base material.
- Order the test report against the standard your market requires.
- Retain a golden sample at the factory and a second one with you.
Related reading
Related specifications on this site cover elastic cord, eyelet, uv protection fabric, cord end, and the processes most often paired with invisible zipper include flame retardant finishing, calendering, metal stamping.
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.
