Packaging functionality of coated papers as primary food packaging MPR&S/imo-imomec (UHasselt)

Abstract

The use of paper in primary food packaging receives much interest because of high consumer value and the well-known recycling process of paper. Paper is finished with one or more coatings, offering good seal and barrier properties to gases and/or moisture. Currently, non-fibre content is minimized of coated papers to allow collection in the consumer paper waste stream, following national guidelines. As a result, many novel coated papers are brought onto the market as primary food packaging. However, it is not always clear whether these materials meet the desired properties and if they are fit for purpose. Belgian, German and Polish research institutes combine their expertise to study commercial coated papers for primary packaging in a CORNET project (https://cornet.online/). This project, with REPAC² as acronym, includes inventorisation, packaging functionality, recyclability, product environmental footprint, shelf life, matchmaking and implementation to support SME’s in the food packaging industry. To assess packaging functionality, a selection of 15 commercial coated papers are broadly screened on their seal (hot and cooled down), barrier (water vapor, oxygen gas, water and oil) and mechanical performance (tensile, tear, puncture and abrasion). UV-ageing, morphology and surface properties are included in the determination of packaging functionality. This presentation offers a brief overview of the results of these experiments of one coated paper, in relation with the use of this material as primary food packaging to highlight the opportunities and bottlenecks, compared to a reference film.