Abstract

Molded pulp products are experiencing increased importance due to their environment-friendly characteristics with regards to both production and disposal. In this study, the thermoforming process for the production of molded pulp products was examined by means of two experimental campaigns, with the scope of distinguishing between the water removal due to only compression (better known as cold pressing) and the water removal under additional thermal conditions. The underlying multiphysics of the processes were identified by comparison with similar manufacturing processes found in available literature, and then implemented using a 1-dimensional finite element model in COMSOL software. This fast, simple model was able to predict the water removal for a specific set of process conditions and the results were supported by corresponding experimental observations. Within a process time of up to 15 s, temperatures ranging from 80 °C to 120 °C, and a final dryness between 40% and 65%, the simulations gave accurate estimates, with a difference in prediction down to 0.3%. The paper thus documents the first combined experimental-simulation study for thermoforming of molded pulp products.
Original languageEnglish
JournalDrying Technology
ISSN0737-3937
DOIs
Publication statusAccepted/In press - 2019

Keywords

  • Molded pulp
  • Thermoforming
  • Model
  • Simulation
  • Drying

Cite this

@article{b9f3226c7fcd4d05a171238fb5e459be,
title = "On the drying process of molded pulp products: Experiments and numerical modelling",
abstract = "Molded pulp products are experiencing increased importance due to their environment-friendly characteristics with regards to both production and disposal. In this study, the thermoforming process for the production of molded pulp products was examined by means of two experimental campaigns, with the scope of distinguishing between the water removal due to only compression (better known as cold pressing) and the water removal under additional thermal conditions. The underlying multiphysics of the processes were identified by comparison with similar manufacturing processes found in available literature, and then implemented using a 1-dimensional finite element model in COMSOL software. This fast, simple model was able to predict the water removal for a specific set of process conditions and the results were supported by corresponding experimental observations. Within a process time of up to 15 s, temperatures ranging from 80 °C to 120 °C, and a final dryness between 40{\%} and 65{\%}, the simulations gave accurate estimates, with a difference in prediction down to 0.3{\%}. The paper thus documents the first combined experimental-simulation study for thermoforming of molded pulp products.",
keywords = "Molded pulp, Thermoforming, Model, Simulation, Drying",
author = "Mattia Didone and Sankhya Mohanty and Hattel, {Jesper Henri} and Sonne, {Mads Rostgaard} and Fiordaliso, {Elisabetta Maria} and Alessandro Checchi and Guido Tosello",
year = "2019",
doi = "10.1080/07373937.2019.1653905",
language = "English",
journal = "Drying Technology",
issn = "0737-3937",
publisher = "Taylor & Francis Inc.",

}

TY - JOUR

T1 - On the drying process of molded pulp products: Experiments and numerical modelling

AU - Didone, Mattia

AU - Mohanty, Sankhya

AU - Hattel, Jesper Henri

AU - Sonne, Mads Rostgaard

AU - Fiordaliso, Elisabetta Maria

AU - Checchi, Alessandro

AU - Tosello, Guido

PY - 2019

Y1 - 2019

N2 - Molded pulp products are experiencing increased importance due to their environment-friendly characteristics with regards to both production and disposal. In this study, the thermoforming process for the production of molded pulp products was examined by means of two experimental campaigns, with the scope of distinguishing between the water removal due to only compression (better known as cold pressing) and the water removal under additional thermal conditions. The underlying multiphysics of the processes were identified by comparison with similar manufacturing processes found in available literature, and then implemented using a 1-dimensional finite element model in COMSOL software. This fast, simple model was able to predict the water removal for a specific set of process conditions and the results were supported by corresponding experimental observations. Within a process time of up to 15 s, temperatures ranging from 80 °C to 120 °C, and a final dryness between 40% and 65%, the simulations gave accurate estimates, with a difference in prediction down to 0.3%. The paper thus documents the first combined experimental-simulation study for thermoforming of molded pulp products.

AB - Molded pulp products are experiencing increased importance due to their environment-friendly characteristics with regards to both production and disposal. In this study, the thermoforming process for the production of molded pulp products was examined by means of two experimental campaigns, with the scope of distinguishing between the water removal due to only compression (better known as cold pressing) and the water removal under additional thermal conditions. The underlying multiphysics of the processes were identified by comparison with similar manufacturing processes found in available literature, and then implemented using a 1-dimensional finite element model in COMSOL software. This fast, simple model was able to predict the water removal for a specific set of process conditions and the results were supported by corresponding experimental observations. Within a process time of up to 15 s, temperatures ranging from 80 °C to 120 °C, and a final dryness between 40% and 65%, the simulations gave accurate estimates, with a difference in prediction down to 0.3%. The paper thus documents the first combined experimental-simulation study for thermoforming of molded pulp products.

KW - Molded pulp

KW - Thermoforming

KW - Model

KW - Simulation

KW - Drying

U2 - 10.1080/07373937.2019.1653905

DO - 10.1080/07373937.2019.1653905

M3 - Journal article

JO - Drying Technology

JF - Drying Technology

SN - 0737-3937

ER -