- A critical defect.
A leak occurring at the manufactured notch (which is intended for easy opening of the retort pouch) has compromised the container integrity.
- The machine setting at the pouch manufacturer was incorrect, allowing the notch to be cut too far into the seal.
- The notch was correctly formed but was torn in transit or during handling.
- The sealing bar settings (i.e. the temperature, pressure and/or dwell time) were not correct during sealing cold seal next to the notch.
- The seal area was contaminated with product, moisture, grease, or other contaminants.