PU Leather Non-Woven Interlining for Backpacks — Specification, Uses and Sourcing Notes
PU Leather Non-Woven Interlining for Backpacks: Specification, Uses and Sourcing Notes
PU Leather Non-Woven Interlining 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
PU Leather gives non-woven interlining its durability under wash and abrasion. In practice that means the trim 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 | Non-Woven Interlining |
|---|---|
| Base material | PU Leather |
| Standard size | 8# Gauge |
| Common finishes | Matte Black Coating, Anodised Finish, Yarn-Dyed Finish |
| Processes | Enzyme Washing, Anodising, Bonding |
| Typical application | Backpacks |
| Related applications | Sleepwear, Suits, Shirts, Down Jackets |
| Test standard | AATCC Test Methods |
| Usual packing | 200 pieces per polybag, 10000 per carton |
Properties that matter in buying
- Dimensional stability — 2% allowance is built into the spec before cutting.
- Colour fastness — tested to AATCC Test Methods on the actual base material, not on a substitute.
- Mechanical performance — abrasion resistance after 50 cycles or washes.
- Compliance — AATCC Test Methods documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Blazers
- Blouses
- Caps
- Hats
- Evening Wear
- Uniforms
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 nylon zipper, bungee cord, applique patch, selvedge denim fabric, and the processes most often paired with non-woven interlining include metal stamping, warp knitting, rotary printing.
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.
