#7GS-SZ8-FB-W-PET-DC-7#
Eight-Thread Explosion-Proof Double-Layer Zipper
Extra seam coverage for longer life under repeated heavy use.
The #7 eight-thread model is a medium-large profile for reusable bags and bulk handling. High-density four-needle eight-thread sewing creates more attachment points between the tape and chain base than the six-thread construction. Dual-layer, dual-track polyester coil teeth share pressure during bag expansion, stacking, and repeated transport, while the flexible chain remains suitable for washing and cyclic reuse.
Key Features
- ✓Four-needle eight-thread high-density stitching
- ✓Larger seam area with more stress points
- ✓Dual-layer dual-track explosion-proof structure
- ✓Stable performance after multiple industrial washes
Specifications
| Color | Black (custom colors available) |
|---|---|
| Length | 100–3000 mm, ±3 mm tolerance (custom) |
| Profile | #7 heavy-duty profile |
| Material | High-density polyester tape |
| Tape width | 42.5±0.5 mm |
| Slider chamber | H 3.0–3.1 / W 7.45–7.55 mm |
| Wide tape option | 44.5 mm |
| Zipper thickness | 2.85±0.05 mm |
| Closed chain width | 7.4±0.05 mm |
Applications
- Medium and large express reusable bags
- Logistics bulk bags
- Large storage bags
- Outdoor load-bearing packs
