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Article

Optimisation on Thermoforming of Biodegradable Poly (Lactic Acid) (PLA) by Numerical Modelling

by 1,2
1
College of Health and Life Sciences, Aston University, Birmingham B4 7ET, UK
2
Rayner Intraocular Lenses Limited, Worthing BN14 8AQ, UK
Academic Editor: Luis Cabedo Mas
Polymers 2021, 13(4), 654; https://doi.org/10.3390/polym13040654
Received: 31 January 2021 / Revised: 12 February 2021 / Accepted: 17 February 2021 / Published: 22 February 2021
(This article belongs to the Special Issue Polymers in Food Packaging Applications)
Poly (lactic acid) (PLA) has a broad perspective for manufacturing green thermoplastic products by thermoforming for its biodegradable properties. The mechanical behaviour of PLA has been demonstrated by its strong dependence on temperature and strain rate at biaxial deformation. A nonlinear viscoelastic model by the previous study was employed in a thermoforming process used for food packaging. An optimisation approach was developed by achieving the optimal temperature profile of specimens by defining multiple heating zones based on numerical modelling with finite element analysis (FEA). The forming process of a PLA product was illustrated by modelling results on shape evolution and biaxial strain history. The optimal temperature profile was suggested in scalloped zones to achieve more even thickness distribution. The sensitivity of the optimal results was addressed by checking the robustness under perturbation. View Full-Text
Keywords: optimisation; thermoforming; PLA; numerical modelling; FEA; zones; biaxial strain optimisation; thermoforming; PLA; numerical modelling; FEA; zones; biaxial strain
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MDPI and ACS Style

Wei, H. Optimisation on Thermoforming of Biodegradable Poly (Lactic Acid) (PLA) by Numerical Modelling. Polymers 2021, 13, 654. https://doi.org/10.3390/polym13040654

AMA Style

Wei H. Optimisation on Thermoforming of Biodegradable Poly (Lactic Acid) (PLA) by Numerical Modelling. Polymers. 2021; 13(4):654. https://doi.org/10.3390/polym13040654

Chicago/Turabian Style

Wei, Huidong. 2021. "Optimisation on Thermoforming of Biodegradable Poly (Lactic Acid) (PLA) by Numerical Modelling" Polymers 13, no. 4: 654. https://doi.org/10.3390/polym13040654

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