Targeting mainly the pet food and feed industries, Mondi Coatings & Consumer Packaging has developed a novel paper-based bag said to offer high-barrier features comparable to plastic bags.
The Austria-based international paper and packaging group says its new hermetically closed pinch bottom bag offers not only prolonged shelf life of products compared to other paper-based packaging solutions, but also the possibility of reducing the use of preservatives within the pet food formulation.
The bag is made up of a kraft paper carrier layer, which is – depending on the specific requirements – either laminated with an EVOH-based film or extrusion laminated with aluminium as physical barrier.
Customers can also choose from various bag designs: normal or semi-extensible kraft paper as external ply or in even more sophisticated solutions, clay coated greaseproof paper laminated with PET or PE.
Stefan Gutheil, Mondi managing director consumer packaging, says: “Market trends towards intelligent and sustainable packaging solutions have been the trigger for our latest product development.
“The hermetically closed pinch bottom bag features enhanced barrier properties whilst offering the natural look and feel of a paper-based packaging.”
The bag provides an oxygen barrier as well as a high grease resistance, thanks to the thermo-sealed bottom and corners.
In addition, the hotmelt used in the sealing of the barrier ply fin provides the high protection typically provided by plastic bags.
Designed to withstand most critical ambient conditions in terms of temperature and humidity, the robust laminate and the hermetically closed bottom and corners make the bag the ideal solution for safe deliveries in hot, humid countries.
The bags were able to stand current testing for grease resistance of up to 20% fats and mechanical properties, which are common for big sacks (up to 20 kg).
With production operations across 31 countries and revenues of €6.2 billion in 2010, the Mondi group’s key operations are located in Central Europe, Russia and South Africa, employing 29,000 people as at the end of 2010.
The Group is principally involved in the manufacture of packaging paper, converted packaging products and uncoated fine paper (UFP).
Mondi's new hermetically closed pinch bottom bag targets the pet food and feed industries
