Most injection-moulded plastics are injection moulded into moulds made from conventional materials such as steel or aluminium. The production costs of the mould are considerable. 3D printing from plastic can be used for injection moulds to save these costs. This article deals with injection moulding into a 3D-printed plastic mould. The injection insert was produced on a HP Multi Jet Fusion 4200 3D printer. The other part of the mould was made of aluminium. A custom injection mould was designed for the research. One insert was made from plastic, and one from aluminium. Both moulds were injected under the same injection conditions. A comparison of injection moulding into the plastic and aluminium inserts is made in this article. The difference when injection moulding into the plastic insert is explained using the different technological conditions. The part injected into the plastic insert was also different from the part injected into the aluminium insert. The difference is explained in this article. This article also looks at the interface between the injection-moulded part and the plastic insert using an electron microscope. The images taken clarify the differences between injection moulding into a plastic insert and an aluminium insert and the differences of the injection-moulded part from the plastic insert.

Dees Industries s r o Voctářova 2497 18 180 00 Praha Czech Republic

Faculty of Mechanical Engineering Regional Technological Institute University of West Bohemia Univerzitni 8 306 14 Plzen Czech Republic

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Gibson I., Rosen D., Strucker B. Additive Manufacturing Technologies. 2nd ed. Springer; New York, NY, USA: 2015.

Haoyang Z., Zhang N. Reference Module in Materials Science and Materials Engineering. Elsevier; Amsterdam, The Netherlands: 2021. Polymer Micro Injection Moulding; p. 165.

Tagliaferri V., Trovalusci F., Guarino S., Venettacci S. Environmental and Economic Analysis of FDM, SLS and MJF Additive Manufacturing Technologies. Materials. 2019;21:4161. doi: 10.3390/ma12244161. PubMed DOI PMC

Heim H. Specialized Injection Molding Techniques. 1st ed. Elsevier; Amsterdam, The Netherlands: 2015.

ISO; Geneva, Switzerland: 2015. Additive Manufacturing—General Principles—Terminology.

Marek V. Conference Series Materials Science and Engineering, Proceedings of the 26th International Slovak-Polish Scientific Conference on Machine Modelling and Simulations (MMS 2021), Bardejovské Kúpele, Slovak Republic, 13–15 September 2021. IOP Publishing; Bristol, UK: 2021. Optimization and fast prototyping of polymer parts exposed to cyclic loading; p. 1199.

Spirk S., Krizek M., Jenicek S. Polyurethane foam behavior during impact. MATEC Web Conf. 2018;157:02050. doi: 10.1051/matecconf/201815702050. DOI

Krahn H., Eh D., Vogel H. 1000 Konstruktionsbeispiele für den Werkzeug–und Formenbau beim Spritzgiessen. Hansen Munich; Munich, Germany: 2008.

Said A., Shafahat A., Salman P. Performance optimization of 3D printed polyamide 12 via Multi Jet Fusion: A Taguchi grey relational analysis (TGRA) Int. J. Lightweight Mater. Manuf. 2023;6:72–81.

HP Development Company L.P. HP 3D High Reusability PA 12 Glass Beads. 2019. [(accessed on 22 May 2023)]. Available online: https://static1.sw-cdn.net/files/cms/materials/data-sheets/HP-MJF-PA12GB-datasheet.pdf.

Joseph P. Injection Moulding. In: William A., editor. Automotive Plastics and Composites. 1st ed. Volume 392 Elsevier; Oxford, UK: 2021.

Cai C., Tey W.S., Chen J., Zhu W., Liu X., Liu T., Zhao L., Zhou K. Comparative study on 3D printing of polyamide 12 by selective laser sintering and multi jet fusion. J. Mater. Process. Technol. 2021;288:116882. doi: 10.1016/j.jmatprotec.2020.116882. DOI

Salomone R., Speranza V., Liparoti S., Titomanlio G., Pantani R. Modeling and Analysis of Morphology of Injection Molding Polypropylene Parts Induced by In-Mold Annealing. Polymers. 2022;14:5245. doi: 10.3390/polym14235245. PubMed DOI PMC

Guo B., Xu Z., Bai J. A detailed evaluation of surface, thermal, and flammable properties of polyamide 12/glass beads composites fabricated by multi jet fusion. Virtual Phys. Prototyp. 2021;15:S39–S52. doi: 10.1080/17452759.2021.1899463. DOI

Mouldex3D Help 2022. [(accessed on 22 May 2023)]. Available online: http://support.mouldex3d.com/2022/en/index.html.

Gohn A.M., Brown D., Mendis G., Forster S., Rudd N., Giles M. Mold inserts for injection molding prototype applications fabricated via material extrusion additive manufacturing. Addit. Manuf. 2022;51:102595. doi: 10.1016/j.addma.2022.102595. DOI

Frank L., Hovorka M., Mikmeková Š., Mikmeková E., Müllerová I., Pokorná Z. Scanning Electron Microscopy with Samples in an Electric Field. Materials. 2019;5:2731. doi: 10.3390/ma5122731. DOI

Priyadarshini B.M., Kok W.K., Dikshit V., Feng S., Li K.H.H., Zhang Y. 3D printing biocompatible materials with Multi Jet Fusion for bioreactor applications. Int. J. Bioprint. 2022;9:623. doi: 10.18063/ijb.v9i1.623. PubMed DOI PMC

Bellantone V., Surace R., Fassi I. Quality Definition in Micro Injection Molding Process by Means of Surface Characterization Parameters. Polymers. 2022;14:3775. doi: 10.3390/polym14183775. PubMed DOI PMC

Slouf M., Skoupy R., Pavlova E., Krzyzanek V. High Resolution Powder Electron Diffraction in Scanning Electron Microscopy. Materials. 2021;14:7550. doi: 10.3390/ma14247550. PubMed DOI PMC