Bar tack / stress-relief stitch
Also known as: Reinforcement bar tack, Stress bar tack
Densely packed zig-zag stitch block that stabilises stress points at seams and pocket edges.
Description
A stress-relief stitch (bar tack) is a short, very densely packed zig-zag stitch block that reinforces stressed points of a garment or bag seam. Typical positions are pocket corners, dungaree straps, belt loops, zipper ends, flap pockets and carrying straps. It is usually executed on bar-tack machines with 28, 42 or 64 stitches.
It prevents tearing under tensile load and extends the life of heavily stressed textiles. In premium ready-to-wear, bar tacks are often set in contrasting colour as a visible design detail; in workwear and military garments they are kept tonal and purely functional.
- Dense zig-zag bar, typically 28-64 stitches
- Reinforces corners, loops, zipper ends, straps
- Prevents tearing under tension
- Standard for workwear, denim, backpacks, bags
Properties
| Stitch type | Dense zig-zag bar tack |
|---|---|
| Stitch count | 28 / 42 / 64 stitches |
| Function | Protects stress points against tearing |
| Application | Pocket corners, belt loops, zipper ends, carry straps |
Sources & references
1- Wikipedia: Bar tack Wikipedia — Freie Enzyklopädie https://en.wikipedia.org/wiki/Bar_tack
