Zinc Alloy Modal Fabric for Backpacks — Specification, Uses and Sourcing Notes
Zinc Alloy Modal Fabric for Backpacks: Specification, Uses and Sourcing Notes
Zinc Alloy Modal Fabric is the version buyers specify for backpacks 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 modal fabric its weight-to-strength ratio. In practice that means the fabric behaves differently in cutting, in finishing and in wear: the finish has to be applied before assembly. 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 | Modal Fabric |
|---|---|
| Base material | Zinc Alloy |
| Standard size | 110 gsm |
| Common finishes | Matte Black Coating, Black Nickel Finish, Glossy Enamel Coating |
| Processes | Laminating, Warp Knitting, Stone Washing |
| Typical application | Backpacks |
| Related applications | Bags, Caps, Lingerie, Blouses |
| Test standard | Sedex SMETA |
| Usual packing | 200 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 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
- Jeans
- Luggage
- Dresses
- Sportswear
- Upholstery
- Lingerie
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 satin ribbon, fusible web tape, jacquard fabric, cupro fabric, and the processes most often paired with modal fabric include electroplating, pu coating, rotary printing.
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.



