FP - Leaker (Notch)

Classification 

  • A critical defect.

Identification 

A leak occurring at the manufactured notch (which is intended for easy opening of the retort pouch) has compromised the container integrity.

Causes 

  1. The machine setting at the pouch manufacturer was incorrect, allowing the notch to be cut too far into the seal.
  2. The notch was correctly formed but was torn in transit or during handling.
  3. The sealing bar settings (i.e. the temperature, pressure and/or dwell time) were not correct during sealing cold seal next to the notch.
  4. The seal area was contaminated with product, moisture, grease, or other contaminants.