FP - Seal Defects (Contaminated)

Classification 

  • A major defect if the width of the continuous intact seal is reduced to less than 3 mm (3/32-inch).
  • A minor defect if there is 3 mm (3/32-inch) or more of continuous intact seal.

Identification 

Foreign material is trapped in the seal area. A retort pouch with contamination will have a noticeable raised area in the seal where the sealing bar has sealed over the contamination.

Causes 

The seal area was contaminated during the filling stage.