Polyester Plastic Zipper for Bags — Specification, Uses and Sourcing Notes
Polyester Plastic Zipper for Bags: Specification, Uses and Sourcing Notes
Polyester Plastic Zipper is the version buyers specify for bags 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 plastic zipper 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 | Plastic Zipper |
|---|---|
| Base material | Polyester |
| Standard size | 12 mm Width |
| Common finishes | Yarn-Dyed Finish, UV Printing, Brushed Silver Finish |
| Processes | Flame Retardant Finishing, Heat Transfer Printing, Enamel Filling |
| Typical application | Bags |
| Related applications | Trousers, Blouses, Luggage, Home Curtains |
| Test standard | ISO 14001 |
| Usual packing | 200 pieces per polybag, 5000 per carton |
Properties that matter in buying
- Dimensional stability — 3% allowance is built into the spec before cutting.
- Colour fastness — tested to ISO 14001 on the actual base material, not on a substitute.
- Mechanical performance — abrasion resistance after 50 cycles or washes.
- Compliance — ISO 14001 documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Skirts
- Shirts
- Socks
- Coats
- Sleepwear
- Home Curtains
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 jacquard webbing, selvedge denim fabric, zipper puller, cashmere fabric, and the processes most often paired with plastic zipper include rotary printing, water repellent finishing, sanforising.
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.
