Glass Shock Cord for Backpacks — Specification, Uses and Sourcing Notes
Glass Shock Cord for Backpacks: Specification, Uses and Sourcing Notes
Glass Shock Cord 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
Glass gives shock cord its durability under wash and abrasion. 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 | Shock Cord |
|---|---|
| Base material | Glass |
| Standard size | 32 mm Width |
| Common finishes | Enzyme Wash Finish, Antique Brass Plating, Piece-Dyed Finish |
| Processes | Enzyme Washing, Electroplating, Ultrasonic Welding |
| Typical application | Backpacks |
| Related applications | Blazers, Evening Wear, Skirts, Dresses |
| Test standard | Bluesign |
| Usual packing | 100 pieces per polybag, 2000 per carton |
Properties that matter in buying
- Dimensional stability — 2% allowance is built into the spec before cutting.
- Colour fastness — tested to Bluesign on the actual base material, not on a substitute.
- Mechanical performance — elastic recovery after 50 cycles or washes.
- Compliance — Bluesign documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Bridal Gowns
- Yoga Wear
- Caps
- Blazers
- Lingerie
- Sportswear
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 cord lock, fleece fabric, mesh fabric, plastic zipper, and the processes most often paired with shock cord include anti-static finishing, metal stamping, laser cutting.
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.
