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Flow-Line-Reducing Tetrahedral Metal Effect Pigments for Injection Molding: A Yield-Rate-Improved Particle Manufacturing Method Based on Soft UVImprint Lithography

  • This publication presents an improved manufacturing method for tetrahedral metal effect pigment particles that demonstrates reduced flowlines in injection-molded polymer components compared with conventional platelet-shaped pigment particles. The previously published cold forming process for tetrahedral particles, made entirely from aluminum, faced manufacturing challenges, resulting in a high reject rate due to particle adhesion to the micro-structured mold roller. In contrast, this study introduces a new manufacturing method for tetrahedral particles, now consisting of metallized UV-cured thermoset polymer. These particles, dispersed in amorphous matrix thermoplastics, have shown to maintain their shape during the injection molding process. The manufacturing technique for these novel particles is based on UV imprint lithography, omitting the reject rates compared with the previously presented cold rolling process of tetrahedral full aluminum particles. Thus, the novel manufacturing technique for tetrahedral pigment particles shows increased potential for automation through roll-to-roll manufacturing in the future.

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Metadaten
URN:urn:nbn:de:kobv:526-opus4-20850
Publisher DOI:https://doi.org/10.3390/polym17192708
Author:Nils Maximilian DemskiORCiD, Holger SeidlitzORCiD, Felix Kuke, Oliver Niklas DornORCiD, Janina ZoglauerORCiD, Tobias HückstaedtORCiD, Paul Hans KammORCiD, Francisco García-MorenoORCiD, Noah KrempORCiD, Christian DreyerORCiDGND, Dirk OberschmidtORCiD
ISSN:2073-4360
Parent Title (English):Polymers
Document Type:Article
Language:English
Year of Publication:2025
Volume:17
Issue:19
Article Number:2708
Publisher:MDPI
Faculties an central facilities:Fachbereich Ingenieur- und Naturwissenschaften
Publishing Institution:Technische Hochschule Wildau
Tag:flowline; injection molding; metal effect pigment; tetrahedral polymer particle; weld line
Source:Demski, N.M.; Seidlitz, H.; Kuke, F.; Dorn, O.N.; Zoglauer, J.; Hückstaedt, T.; Kamm, P.H.; García-Moreno, F.; Kremp, N.; Dreyer, C.; et al. Flow-Line-Reducing Tetrahedral Metal Effect Pigments for Injection Molding: A Yield-Rate-Improved Particle Manufacturing Method Based on Soft UVImprint Lithography. Polymers 2025, 17, 2708. https://doi.org/10.3390/polym17192708
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
6 Technik, Medizin, angewandte Wissenschaften / 66 Chemische Verfahrenstechnik / 667 Reinigungs-, Färbe-, Beschichtungstechniken
Funding:Publikationsfonds der TH Wildau
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
Release Date:2025/10/13
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