Development of a large-scale multi-extrusion FDM printer, and its challenges

Ali, Hazrat; Kurokawa, Syuhei; Shehab, Essam; Mukhtarkhanov, Muslim

doi:10.1016/j.ijlmm.2022.10.001

Cited by 18 publications

(6 citation statements)

References 17 publications

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“…However, FDM printing technologies provide scope for the incorporation of additional polymers for pharmaceutical or therapeutic applications in a relatively simpler manner. Finally, there is more flexibility for the evolution of FDM tablet designs aimed at achieving targeted gastrointestinal delivery [81,82].…”

Section: Fdm-printed Tablets For Targeted Gastrointestinal Drug Deliverymentioning

confidence: 99%

Status of Polymer Fused Deposition Modeling (FDM)-Based Three-Dimensional Printing (3DP) in the Pharmaceutical Industry

Iqbal,

Fernandes,

Idoudi

et al. 2024

Polymers

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Additive manufacturing (AM) or 3D printing (3DP) is arguably a versatile and more efficient way for the production of solid dosage forms such as tablets. Of the various 3DP technologies currently available, fused deposition modeling (FDM) includes unique characteristics that offer a range of options in the production of various types of tablets. For example, amorphous solid dispersions (ASDs), enteric-coated tablets or poly pills can be produced using an appropriate drug/polymer combination during FDM 3DP. The technology offers the possibility of evolving personalized medicines into cost-effective production schemes at pharmacies and hospital dispensaries. In this review, we highlight key FDM features that may be exploited for the production of tablets and improvement of therapy, with emphasis on gastrointestinal delivery. We also highlight current constraints that must be surmounted to visualize the deployment of this technology in the pharmaceutical and healthcare industries.

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Section: Fdm-printed Tablets For Targeted Gastrointestinal Drug Deliverymentioning

confidence: 99%

Status of Polymer Fused Deposition Modeling (FDM)-Based Three-Dimensional Printing (3DP) in the Pharmaceutical Industry

Iqbal,

Fernandes,

Idoudi

et al. 2024

Polymers

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“…The second research question looks the feasibility of using a large format planar FFF printer to print the doubly curved gyroid lattice wall without support structures to reduce the 3D printing time and material for 3D printing. Unlike standard desktop FFF printers large format FFF printers will have its printing issues amplified due to a large number of controllable process parameters for FFF (Ali et al, 2022). To manufacture the doubly curved gyroid lattice wall, the wall has to be divided into segments that can fit the build volume of the large format 3D printer shown in Figure 3.…”

Section: Additive Manufacturingmentioning

confidence: 99%

CAADRIA 2023: HUMAN-CENTRIC - Volume 2

Koh,

Reinhardt,

Makki

et al. 2023

Proceedings of the 28th Conference on Computer Aided Architectural Design Research in Asia (CAADRIA) [Volume 2]

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This paper uses the notion of fractal geometry to understand the underlying geometric rule behind the complex appearance of traditional Indian stepwells, taking the reference of Chand Baori, which is one of the most stunning and complex stepwells in India. Stepwells were mainly designed for religious, water conservation, and social purposes. This paper indicates those aspects in exploring the complex arrangement of the repetitive self-similar stair units in Chand Baori. The geometric quality of self-similar repetition resulting in a complex outcome can be systematically described by fractal geometry. Hence, this paper has adopted a fractal-based computational approach to model the Chand Baori stepwell, including a new stepwell design followed by the Sierpinski triangle, a canonical example of mathematical fractals. The fractal dimension method has been applied at the end to analyze the visual complexity of Chand Baori.

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“…Taking into account the growing market demand for various types of filaments, it is worth noting that, in addition to the development of advanced materials such as reinforced composites [ 18 , 19 ], conductive materials [ 20 , 21 ], or polymers for specialized applications [ 22 , 23 , 24 ], unmodified varieties of polymers still dominate the markets. Their growing demand is mainly related to the increasing number of non-professional and hobby users; additionally, the number of available large-size technologies is increasing [ 25 , 26 , 27 , 28 ]. For these cases, where the size of the prepared products requires the use of several kilograms of material, the important factors are the price of the material and its processability, particularly the intensity of the material flow through the extruder nozzle.…”

Section: Introductionmentioning

confidence: 99%

The Development of Sustainable Polyethylene Terephthalate Glycol-Based (PETG) Blends for Additive Manufacturing Processing—The Use of Multilayered Foil Waste as the Blend Component

Garwacki,

Cudnik,

Dziadowiec

et al. 2024

Materials

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The polymer foil industry is one of the leading producers of plastic waste. The development of new recycling methods for packaging products is one of the biggest demands in today’s engineering. The subject of this research was the melt processing of multilayered PET-based foil waste with PETG copolymer. The resulting blends were intended for additive manufacturing processing using the fused deposition modeling (FDM) method. In order to improve the properties of the developed materials, the blends compounding procedure was conducted with the addition of a reactive chain extender (CE) and elastomeric copolymer used as an impact modifier (IM). The samples were manufactured using the 3D printing technique and, for comparison, using the traditional injection molding method. The obtained samples were subjected to a detailed characterization procedure, including mechanical performance evaluation, thermal analysis, and rheological measurements. This research confirms that PET-based film waste can be successfully used for the production of filament, and for most samples, the FDM printing process can be conducted without any difficulties. Unfortunately, the unmodified blends are characterized by brittleness, which makes it necessary to use an elastomer additive (IM). The presence of a semicrystalline PET phase improves the thermal resistance of the prepared blends; however, an annealing procedure is required for this purpose.

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Development of a large-scale multi-extrusion FDM printer, and its challenges

Cited by 18 publications

References 17 publications

Status of Polymer Fused Deposition Modeling (FDM)-Based Three-Dimensional Printing (3DP) in the Pharmaceutical Industry

Status of Polymer Fused Deposition Modeling (FDM)-Based Three-Dimensional Printing (3DP) in the Pharmaceutical Industry

CAADRIA 2023: HUMAN-CENTRIC - Volume 2

The Development of Sustainable Polyethylene Terephthalate Glycol-Based (PETG) Blends for Additive Manufacturing Processing—The Use of Multilayered Foil Waste as the Blend Component

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