FRANCE - Campbells has expanded its Liebig range in France with the addition of new ready-to-serve products in carton packs that differentiate them from similar canned products on the supermarket shelf.
The 500 gr combiblocMidi carton packs from SIG Combibloc really stand out not only because the product uses an unconventional packaging format, but the cartons have also been printed in landscape format for the first time, and that is the way they will be standing on the shelf.
Ohmic heating for vegetable carton packs
The aseptic filling of the Liebig vegetable side dishes, containing big al dente pieces of vegetables, into aseptic carton packs is made possible by a product preparation system that uses the ohmic process - a gentle, continuous heating process used to sterilise the products.
The food is heated by means of an electric current. The product flows through a compact combination of pipes, which serves as electrical resistance. Compared to conventional thermal sterilisation techniques, the product is not heated over a hot surface, but uniformly through the entire product volume. The electric current goes through the food, causing the temperature to rise rapidly to high degrees Celsius.
The advantage of this ohmic method is that the product ingredients retain their natural flavour and a firmer consistency than in the conventional retort process used, for instance, in conjunction with food metal cans. The ohmic process is suited in particular for processing chunky products such as fruit, vegetables and meat, vegetable soups and purées.
Once the product has been sterilised, the vegetable dishes containing big al dente pieces of vegetables are filled into aseptic carton packs in the SIG Combibloc filling machines. After the filling process has taken place, the carton packs are ultrasonically sealed above the fill level, and not through the product. This prevents product ingredients from getting caught in the sealed seam – a big plus for aseptic product safety.