Biobased gas barrier coatings for paper
By Dr Martina Lindner, Dr Siegfried Fürtauer, Dieter Bauer, Paula Goderbauer and Andreas Stäbler, Fraunhofer Institute for Process Engineering and Packaging IVV
Choosing the right packaging is a key issue in the food industry. Companies need to protect food products from oxygen, moisture, chemical and biological contamination while keeping them fresh for as long as possible. Multilayer materials, in which each layer offers specific characteristics, are frequently used to protect food from deterioration. Due to the decrease of mineral oil resources, it is crucial to develop packaging materials based on renewable resources. Although paper is biobased and recyclable, its poor gas barrier usually makes it unsuitable as a primary packaging material for foods. In addition, recycled paper often contains residues of mineral oil-based printing inks, which can migrate from the packaging into the food products. Hence, Fraunhofer Institute for Process Engineering and Packaging IVV based in Freising, Germany, develops new highly advanced biobased water vapour, oxygen and mineral oil barrier coatings as well as biobased adhesives. The overall innovation target is to substitute conventional, fossil-based food packaging materials by biobased multilayer structures and improve functionalities.
Fraunhofer-Institut für Verfahrenstechnik u. Verpackung IVV D-85354 Freising, www.ivv.fraunhofer.de