Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability

E. Moritzer, A. Hirsch, C. Dalmer, Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability, Springer, 2021.

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Abstract
The Arburg Plastic Freeforming (APF) is an additive manufacturing process which allows the production of three-dimensional thermoplastic components in layers. The components are produced by depositing fine, molten plastic droplets. The main advantage of the APF is the open-parameter control of the associated machine system. Thus, the process parameters can be optimized for individual applications. A special and new application of the APF is the production of interconnecting porous structures. As this is a novel approach with this manufacturing process, the general producibility and reproducibility must first be proven. Therefore, the relevant process parameters with an influence on the open-pored structures are identified. The volume of the individual plastic droplets, the distance between the droplets and the layer thickness are the three decisive influencing factors. With the use of analysis methods, the free spaces created in the structure are described by a uniformly constructed, interconnected pore structure. This means that the pores are interconnected in three dimensions. Reproducibility is evaluated by repeated production and thru the changed conditions during the manufacturing process. In addition, the multiplication and a change of geometry are evaluated in such a way that there is no influence on the pore size. Irregularities when depositing the first layer are caused by unevenness of the building platform. A suitable test arrangement is set up to determine the liquid permeability. A characteristic value is determined to describe the permeability to liquids.
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112-129
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Moritzer E, Hirsch A, Dalmer C. Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability. Springer; 2021:112-129. doi:10.1007/978-3-030-54334-1
Moritzer, E., Hirsch, A., & Dalmer, C. (2021). Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability (pp. 112–129). Springer. https://doi.org/10.1007/978-3-030-54334-1
@book{Moritzer_Hirsch_Dalmer_2021, title={Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability}, DOI={10.1007/978-3-030-54334-1}, publisher={Springer}, author={Moritzer, E. and Hirsch, A. and Dalmer, C.}, year={2021}, pages={112–129} }
Moritzer, E., A. Hirsch, and C. Dalmer. Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability. Springer, 2021. https://doi.org/10.1007/978-3-030-54334-1.
E. Moritzer, A. Hirsch, and C. Dalmer, Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability. Springer, 2021, pp. 112–129.
Moritzer, E., et al. Investigation of Plastic Freeformed, Open-Pored Structures with Regard to Producibility, Reproducibility and Liquid Permeability. Springer, 2021, pp. 112–29, doi:10.1007/978-3-030-54334-1.

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