Compare three materials at a glance
| Item | Primary characteristic | Common direction | Confirmation |
|---|---|---|---|
| Zipper surface | Surface film or structural direction | Appearance and retention after bending or abrasion | |
| Sewn seam | Needle holes and thread create potential paths | Seam sealing, tape compatibility and process | |
| End construction | Stops, open-end parts and transitions | Coverage, sealing and drainage | |
| Finished system | Fabric, placket and every connection | Complete testing against the target standard |
Define what must be resisted
Brief splashes, sustained rain and hydrostatic pressure are different targets. A real scenario is more useful than the single word waterproof.
Define sample state
New, laundered, abraded or cold-condition samples can behave differently and should be written into the plan.
Inspect ends and sewing
Many failures occur at needle holes, ends or placket transitions rather than the center of the zipper.
Preserve the evidence chain
Product documents, sample ID, conditions, photos and reports should correspond to the final order specification.
Frequently asked questions
Can a water-resistant zipper be used on rainwear?
It can be a candidate, but rainwear compliance depends on the complete construction and target test.
Why retest after laundering?
Laundering and bending can affect the surface and seam condition, making retesting more representative of the life cycle.
Can one universal waterproof value be published?
No. Different ranges, constructions and test methods cannot be mixed; use formal product documentation.
Dongguan Guanxun Zipper Co., Ltd. is an authorized SBS Zipper dealer, not the SBS brand owner or the listed manufacturing company. Product specifications, performance, price, MOQ and lead time require written project confirmation.
