Copper Sweatshirt Fleece for Down Jackets — Specification, Uses and Sourcing Notes
Copper Sweatshirt Fleece for Down Jackets: Specification, Uses and Sourcing Notes
Copper Sweatshirt Fleece is the version buyers specify for down 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
Copper gives sweatshirt fleece its weight-to-strength ratio. In practice that means the fabric behaves differently in cutting, in finishing and in wear: shrinkage allowance has to be built into the spec. 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 | Sweatshirt Fleece |
|---|---|
| Base material | Copper |
| Standard size | 450 gsm |
| Common finishes | Chrome Plating, Matte Black Coating, Piece-Dyed Finish |
| Processes | Enamel Filling, Piece Dyeing, Heat Setting |
| Typical application | Down Jackets |
| Related applications | Upholstery, Backpacks, Uniforms, Bedding Sets |
| Test standard | ISO 105 Colour Fastness |
| 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 ISO 105 Colour Fastness on the actual base material, not on a substitute.
- Mechanical performance — pull strength after 50 cycles or washes.
- Compliance — ISO 105 Colour Fastness documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.

Common uses
- Footwear
- Suits
- Lingerie
- Activewear
- Sleepwear
- Trousers
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 rayon fabric, closed-end zipper, non-woven fabric, bungee cord, and the processes most often paired with sweatshirt fleece include yarn dyeing, enzyme washing, enamel filling.
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