Development of PLA–TPS Formulations for the Manufacturing of Compostable Films by Hot Lamination Processing

PROJECT COST:

81 025 $

PRIMA CONTRIBUTION:

16 025 $

PROJECT DETAILS:

Paperboard packaging for moist or greasy foods, such as ready-to-eat and fast-food meals, requires the application of an internal coating to prevent oil and moisture penetration into the paperboard. This protective layer enhances product presentation while reducing the risk of leakage and package failure. Conventional packaging solutions typically rely on petroleum-based materials, such as paraffin waxes or plastic polymers. However, in the context of sustainable development and the reduction of non-recyclable and non-biodegradable waste, these traditional coatings are no longer an optimal solution. Furthermore, they may pose potential food safety concerns due to the migration of undesirable substances from the coating into the food.

The objective of this project is to develop a laminated paperboard packaging material incorporating a thin, bio-based, and home-compostable film. The packaging is intended for fast-food applications and must therefore provide adequate resistance to heat, moisture, and grease throughout its intended service life. In addition, the film must withstand the mechanical and thermal stresses associated with the lamination process while maintaining a minimum thickness of 50 µm and high optical transparency.