Work packages of the SELECTPERM project
The project is organised in eight work packages
WP 1: Project coordination
WP 2: Modeling of packaging requirements
A numerical model will be designed to simulate the time evolution of partial gas pressure within a packaging containing respiring produce. This model will be used to calculate the required selective permeability and materials properties. It will be optimised and verified on the basis of case studies performed in WP 4.
WP 3: Preliminary work and pure materials development on selective permeability
A literature search will be performed to assess the actual state of the art in the field of selective permeable materials. Based on the literature search, different polymers or coating materials will be chosen, and the single-component materials and later multi-component or bi-layered samples will be screened regarding their permselectivity to oxygen and carbon dioxide. A database containing the measured permeability data of the different materials needed for WP 4 will be created and any missing permeability data for the simulations in WP 2 will be provided. At the same time, zeolites will be synthesized to improve the permselectivity of the single-component materials.
WP 4: Processing of materials and case studies
Single- and multi-component materials with a permselective characteristic based on the results of WP 3 will be evaluated, and fillers and passive or active additives will be included to improve both permselectivity and gas permeability. This will then be up-scaled from the laboratory to the pilot scale. Test packages (including trays and lids) made from the processable permselective materials will be produced. Test packages for case studies aimed at the two selected food products and the favoured material combinations:
- fruit salad – tray: made of plastic or coated cardboard; lid: made of transparent polymer film
- cheese - tray and lid made of coated cardboard or multi-layer plastic film.
WP 5: Characterisation of materials, efficacy and optimisation
The formulations and new materials produced in WP 3 and WP 4 will be characterised. The efficiency of the new materials and test packages to conserve freshly cut fruits and cheeses based on selective permeability will be evaluated.
WP 6: End of life
- Testing the recyclability of material samples and packages based on coated cardboard
- Testing the reuse of plastic material samples and packages
- Testing biodegradation by composting appropriate samples and packages
WP 7: Profitability study
The costs of the best sustainable, environmentally friendly, shelf-life improving and health preserving packaging solutions will be estimated and compared to existing packaging solutions.
WP 8: Dissemination