TPU Shell Button for Activewear — Specification, Uses and Sourcing Notes
TPU Shell Button for Activewear: Specification, Uses and Sourcing Notes
TPU Shell Button is the version buyers specify for activewear 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
TPU gives shell button its weight-to-strength ratio. In practice that means the trim 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 | Shell Button |
|---|---|
| Base material | TPU |
| Standard size | 9 mm Width |
| Common finishes | Antique Copper Finish, Matte Black Coating, Antique Brass Plating |
| Processes | Injection Moulding, Mercerising, Brushing |
| Typical application | Activewear |
| Related applications | Workwear, Blouses, Dresses, Coats |
| Test standard | California Prop 65 |
| Usual packing | 100 pieces per polybag, 5000 per carton |
Properties that matter in buying
- Dimensional stability — 2% allowance is built into the spec before cutting.
- Colour fastness — tested to California Prop 65 on the actual base material, not on a substitute.
- Mechanical performance — abrasion resistance after 30 cycles or washes.
- Compliance — California Prop 65 documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Bags
- Scarves
- Caps
- Trousers
- Skirts
- Swimwear
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 boning tape, striped fabric, leather hang tag, invisible zipper, and the processes most often paired with shell button include piece dyeing, digital printing, weaving.
Tell us the item, the quantity and the delivery window. We will quote it with the sub-processes named, so the lead time you approve is the lead time you get.
