Sterile filling of food into containers formed from plastic foil - by steam sterilising lengths of flat foil on both sides before shaping into container and cover and keeping in sterile atmos. until closing.

摘要

In the sterile filling of plastic containers, the container is formed from plastic foil and is sterilised with steam, and the container and its cover are kept in a sterile atmosphere until they are combined. In two sequential operations the plastic foil while still in flat form is sterilised by steam from one side and cooled from the other side, and then vice versa. Also claimed is a machine for carrying out the process, which contains sterilising devices (12) for the container foil (3) and the cover foil in the form of two groups of flat tools between which the foil is treated. One tool section (23,24) acts as a cooling plate and the other (25,26) as a steam application plate, and in the first group the steam plate is one side of the foil and in the second on the other. USE/ADVANTAGE - For sterile filling of foodstuffs into plastic containers. Effective and reliable sterilisation of the food receiving space is achieved in a procedure which can be used with high-speed filling machines.