Let's start from the beginning. What is Retort packaging? It's a canning replacement method that involves the use of thin, flexible pouches. Producers first fill and then seal the packets. They then subject the sealed containers to high-heat sterilization treatment. This process removes bacteria and extends product self life. Retort packaged items have shelf lives similar to canned selections and don't require refrigeration.
Thin and flexible, retort pouches quickly transfer heat, resulting in a sterilization process up to 30% faster than with cans. This faster procedure uses less energy and, therefore, delivers cost savings. It also permits products to maintain high levels of vitamins, minerals, and other nutrients. Empty retort pouches store flat and require less storage space before filling, reducing warehousing expenses. Lightweight and easy-to-pack after filling, they deliver transportation cost savings. The packets provide an elongated, flat, forward-facing labeling area, giving you extended marketing space.
Consumers appreciate the convenience these products deliver. They work with several cooking methods including boiling-in-the bag and microwaving. Built-in top notches make it easy to tear the bags open, and eliminate the need for can openers. Easy to flatten when empty, they take up less space after use, reducing overall amounts of household or institutional trash.
You can put just about every conceivable type of processed food or drink in retort pouches. Pet food makers regularly use them to package wet food and treats. Choices that consumers can puncture with a straw work well for juice and yogurt drinks. They're nice choices for ready to serve entree selections such as curries, pastas with sauce, and other pre-cooked dinner items. Manufacturers also use these containers for soup, rice, and pre-cooked vegetables.
Retort pouch packaging offers two major disadvantages: initial machinery costs and process complexity. It requires highly specialized filling, thermal treatment, and tensile strength testing equipment. These machines tend to be expensive to purchase and costly to maintain. Production complexity creates another potential stumbling block. To properly heat treat sealed pouches, manufacturers must factor in several elements, including residual air and package thickness. Two other potential difficulties include slower filling speeds and the need to provide extra protection during shipping. Filling techniques tend to be somewhat slower than those associated with canning. Depending on the type of container you select, you might need to provide extra wrapping during distribution to minimize the chances of accidental puncture.