Canning and Fish Packaging Technology

Unit 3 - Unit operations in canning

3.2.3.7.3. Steam injection method of exhausting
In this method steam is injected into the head space just prior to seaming. When the seamed can is cooled, steam condenses into water producing vacuum. The use of this method is limited to some canned fish, e.g. Salmon. This method is being used for exhausting retort pouches.