Influence of high-pressure processing on morphological, thermal and mechanical properties of retort and metallized flexible packaging

Author(s)

Marangoni Junior, Luis ^{[1, 2]} ; de Oliveira, Lea Mariza ^[2] ; Hellmeister Dantas, Fiorella Balardin ^[2] ; Cristianini, Marcelo ^[1] ; Padula, Marisa ^[2] ; Rodrigues Anjos, Carlos Alberto ^[1]

Affiliation

^[1] Univ Estadual Campinas, Sch Food Engn, Dept Food Technol, Campinas, SP - Brazil

^[2] Ital, Food Technol Inst, Packaging Technol Ctr, Cetea, Campinas, SP - Brazil

• Document type: Journal article
• Source: Journal of Food Engineering; v. 273, MAY 2020.
• Web of Science Citations: 8

Abstract

The effect of high-pressure processing on the morphological, thermal and mechanical properties of flexible packages was evaluated. The packages were composed of PET/Al/PA/PP (sample A) and PET/printing/metallization/PET/LDPE-coex (sample B), were processed under three different conditions (600 MPa/25 degrees C for 10 min, 600 MPa/90 degrees C for 10 min and 0.1 MPa/90 degrees C for 10 min), with an unprocessed sample being used as a control. Sample A showed visual and microscopic defects after processing at 600 MPa/90 degrees C in 20% of the processed packages, and the melting temperature of the PA layer was significantly lower (p < 0.05) after processing at 600 MPa/25 degrees C and 90 degrees C compared to control. In addition, high-pressure processing influenced the mechanical property results. For sample B, no changes were observed in thermal and morphological properties after varying process conditions. However, in the 90 degrees C processes there was a reduction in elongation of the material, bond strength and heat sealing strength. (AU)

• FAPESP's process: 18/05588-0 - Effect of high pressure processing on the properties of flexible packaging materials
• Grantee: Carlos Alberto Rodrigues Anjos
• Support Opportunities: Regular Research Grants