Retort pouch is a type of food packaging made from laminated structure with or without Aluminum. It allows the sterile packaging of a wide variety of food and drink handled by aseptic processing, and it is replaced of traditional canning packaging. Mostly used for ready to eat products such as meat, sauce, fish, or some other liquid product. The pouch can be heated to 120-135 °C. Now new material ALOX or SIOX PET is replaced to Aluminum material which also with high barrier, and can be micro-woven, just ensure the packaging need be opened during this process.