Paper-based bag with plastic barrier features
- Details
- Published on Friday, 10 February 2012 12:06
GLOBAL – Mondi Coatings & Consumer Packaging has developed a new paper-based bag which the company says offer high-barrier features comparable to plastic bags.
Suitable for pet food and feed products, the Hermetic Closed Pinch Bottom Bag prolongs the shelf life of products as well as retains the taste and flavours of the packed products for an extended period of time compared to other paper-based packaging solutions.
In addition, customers benefit from the reduced amount of required preservatives in the pet food formulation.
The hermetic closed pinch bottom 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.
The innovative bag provides an oxygen barrier as well as a high grease resistance, due to its 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.
According to Mondi, the bags are 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).
The robust laminate and the hermetically closed bottom and corners also mean that the bags can withstand most critical ambient conditions in terms of temperature and humidity. For example, the bag is an ideal solution for safe deliveries in hot, humid countries.
“Market trends towards intelligent and sustainable packaging solutions have been the trigger for our latest product development,” explains Stefan Gutheil, Managing Director Consumer Packaging. “The hermetically closed pinch bottom bag features enhanced barrier properties whilst offering the natural look and feel of a paper-based packaging.”
Customers can choose from a variety of 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.
According to Gutheil, Mondi is also currently working on the development of customised solutions including handles or spouts.
Mondi Coatings & Consumer Packaging - a business unit of the Europe & International Division - is a backwards integrated, innovation leader of siliconised, plastic- and paper-based materials and packaging, with 21 plants, 4 converting terminals and a R&D Centre.
The company serves a broad range of industries with tailored solutions such as customised release liner for the pressure sensitive adhesives industry, extrusion-coated applications for industrial papers and efficient barrier materials for food & non-food industries. The portfolio further includes flexible packaging such as high quality barrier films, printed monofilms and laminates, pre-made paper and plastic bags as well as stand-up pouches with a wide range of features.
