A zipper seal airtight test evaluates the ability of a reclosable zipper to prevent air leakage after closure.
It ensures the zipper maintains freshness, moisture barrier, and odor containment during storage and transport.
Why Airtight Testing Is Important
- Prevents air ingress & moisture absorption
- Maintains vacuum or modified atmosphere
- Ensures food freshness & shelf life
- Confirms zipper profile quality & sealing consistency
- Reduces customer complaints & returns
Test Conditions (Standard)
- Temperature: 23°C ±2°C
- RH: 50% ±5%
- Zipper closed using specified method (finger press / slider)
- Minimum 3–5 cycles before testing (for reclosable bags)