Nowadays about 31% of the food packaging world global market is represented by paper and paperboard packaging solutions. However, these types of materials show some limits and critical issues (migration of Mineral Oil Hydrocarbons-MOH, poor barrier towards gas, water and grease, no sealability). To overcome these limits, paper, cardboard and paperboard are often treated and lacquered with synthetic polymers. Given the interest in using sustainable processes and recyclable, biodegradable and/or compostable materials, this study aims to develop a biobased coating, as a sustainable alternative to current solutions. The coating is made up of water suspension of micro/nano cellulose fibrils together with some natural functional ingredients. To produce the coating suspension, a plant biomass rich in cellulose was subjected to various high-pressure homogenization cycles and properly formulated. The diluted suspension obtained was first observed under optical microscope to verify the cellulose defibrillation, then chemically e dimensionally characterized, finally applied on commercial cardboards with an automatic coating applicator. On the coated cardboards, we evaluated the grammage of the coating applied in different experimental conditions, then we tested the grease resistance with the TAPPI official method (Kit test), the MOH transmission, the water vapor transmission rate (WVTR) and the contact angle to water and vegetable oil, compared to uncoated samples. The results showed that a coating of 3 g/m2 guarantees excellent resistance to grease, achieving the highest Kit test rating, In addition, the coating significantly reduces MOH transmission compared to uncoated samples. Given the good lab-scale applicability, the research is moving towards industrialization with the optimization of coating applications and towards the possible use of recycled paperboard in food packaging applications.

Optimization and development of a biobased coating for cardboard packaging to improve grease and mineral oil resistance / Feroce, A.; Licciardello, F.; Volonté, G.; Piergiovanni, L.. - (2024). (Intervento presentato al convegno SLIM2024 - XI Shelf Life International Meeting tenutosi a Reggio Emilia (Italy) nel May 20-23, 2024).

Optimization and development of a biobased coating for cardboard packaging to improve grease and mineral oil resistance

Feroce A.
;
Licciardello F.;Piergiovanni L.
2024

Abstract

Nowadays about 31% of the food packaging world global market is represented by paper and paperboard packaging solutions. However, these types of materials show some limits and critical issues (migration of Mineral Oil Hydrocarbons-MOH, poor barrier towards gas, water and grease, no sealability). To overcome these limits, paper, cardboard and paperboard are often treated and lacquered with synthetic polymers. Given the interest in using sustainable processes and recyclable, biodegradable and/or compostable materials, this study aims to develop a biobased coating, as a sustainable alternative to current solutions. The coating is made up of water suspension of micro/nano cellulose fibrils together with some natural functional ingredients. To produce the coating suspension, a plant biomass rich in cellulose was subjected to various high-pressure homogenization cycles and properly formulated. The diluted suspension obtained was first observed under optical microscope to verify the cellulose defibrillation, then chemically e dimensionally characterized, finally applied on commercial cardboards with an automatic coating applicator. On the coated cardboards, we evaluated the grammage of the coating applied in different experimental conditions, then we tested the grease resistance with the TAPPI official method (Kit test), the MOH transmission, the water vapor transmission rate (WVTR) and the contact angle to water and vegetable oil, compared to uncoated samples. The results showed that a coating of 3 g/m2 guarantees excellent resistance to grease, achieving the highest Kit test rating, In addition, the coating significantly reduces MOH transmission compared to uncoated samples. Given the good lab-scale applicability, the research is moving towards industrialization with the optimization of coating applications and towards the possible use of recycled paperboard in food packaging applications.
2024
SLIM2024 - XI Shelf Life International Meeting
Reggio Emilia (Italy)
May 20-23, 2024
Feroce, A.; Licciardello, F.; Volonté, G.; Piergiovanni, L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1367911
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