What is Hot-fill Packaging?
Hot-fill packaging is a way of sterilizing the package prior to the filling process to ensure the protection and longevity of shelf life for a wide range of products. This process works by first filling heated, commercially-sterile products in non-sterile packaging. This means that the liquid is heated to near boiling (~ 92 Celsius) before it is filled into the package. Once filled, the package is inverted so that the hot liquid comes in contact with all of the package’s internal surfaces. It is then held at a high temperature for a set period of time, before it is cooled to room temperature. Only high-acid products can be hot-filled and held at ambient temperatures without refrigeration.*