Zinc Alloy Two-Way Separating Zipper for Underwear — Specification, Uses and Sourcing Notes
Zinc Alloy Two-Way Separating Zipper for Underwear: Specification, Uses and Sourcing Notes
Zinc Alloy Two-Way Separating Zipper is the version buyers specify for underwear 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
Zinc Alloy gives two-way separating zipper its durability under wash and abrasion. In practice that means the trim behaves differently in cutting, in finishing and in wear: plating and coating adhesion must be tested on the actual base. 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 | Two-Way Separating Zipper |
|---|---|
| Base material | Zinc Alloy |
| Standard size | 32 mm Width |
| Common finishes | UV Printing, Pearlescent Coating, Soft-Touch Rubber Coating |
| Processes | Embroidery, PU Coating, Anti-Static Finishing |
| Typical application | Underwear |
| Related applications | Socks, Footwear, Underwear, Sportswear |
| Test standard | JIS L Standards |
| Usual packing | 100 pieces per polybag, 2000 per carton |
Properties that matter in buying
- Dimensional stability — 1% allowance is built into the spec before cutting.
- Colour fastness — tested to JIS L Standards on the actual base material, not on a substitute.
- Mechanical performance — abrasion resistance after 30 cycles or washes.
- Compliance — JIS L Standards documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Shirts
- Coats
- Uniforms
- Swimwear
- Hats
- Workwear
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 care label, toggle button, linen fabric, eyelet, and the processes most often paired with two-way separating zipper include calendering, sublimation printing, garment washing.
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.
