Polyester Non-Woven Interlining for Bras — Specification, Uses and Sourcing Notes
Polyester Non-Woven Interlining for Bras: Specification, Uses and Sourcing Notes
Polyester Non-Woven Interlining is the version buyers specify for bras 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
Polyester gives non-woven interlining its weight-to-strength ratio. 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 | Non-Woven Interlining |
|---|---|
| Base material | Polyester |
| Standard size | 8# Gauge |
| Common finishes | Piece-Dyed Finish, UV Printing, Antique Copper Finish |
| Processes | Sublimation Printing, Moisture Wicking Finishing, Enzyme Washing |
| Typical application | Bras |
| Related applications | Yoga Wear, Kidswear, Workwear, Baby Clothing |
| Test standard | GB 18401 |
| Usual packing | 200 pieces per polybag, 10000 per carton |
Properties that matter in buying
- Dimensional stability — 1% allowance is built into the spec before cutting.
- Colour fastness — tested to GB 18401 on the actual base material, not on a substitute.
- Mechanical performance — cycle life after 20 cycles or washes.
- Compliance — GB 18401 documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Dresses
- Baby Clothing
- Boots
- Jackets
- Evening Wear
- Underwear
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 zipper slider, shoulder pad, chain trim, corozo button, and the processes most often paired with non-woven interlining include embossing, water repellent finishing, 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.
