#5 Eight-Thread Explosion-Proof Double-Layer Zipper
#5GS-SZ8-FB-W-PET-DC-5#

Eight-Thread Explosion-Proof Double-Layer Zipper

Extra seam coverage for longer life under repeated heavy use.

The #5 eight-thread model is a medium profile balancing flexibility and load capacity. 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

ColorBlack (custom colors available)
Length100–3000 mm, ±3 mm tolerance (custom)
Profile#5 heavy-duty profile
MaterialHigh-density polyester tape
Tape width41.5±0.5 mm
Slider chamberH 2.9–3.0 / W 6.5–6.6 mm
Wide tape option44 mm
Zipper thickness2.70±0.05 mm
Closed chain width6.45±0.05 mm

Applications

  • Small and medium express reusable bags
  • Backpacks
  • Storage bags
  • Work and protective bags

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