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A Review of Critical Issues in High-Speed Vat Photopolymerization

Vat photopolymerization (VPP) is an effective additive manufacturing (AM) process known for its high dimensional accuracy and excellent surface finish. It employs vector scanning and mask projection techniques to cure photopolymer resin at a specific wavelength. Among the mask projection methods, di...

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Autores principales: Paral, Sandeep Kumar, Lin, Ding-Zheng, Cheng, Yih-Lin, Lin, Shang-Chih, Jeng, Jeng-Ywan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10302688/
https://www.ncbi.nlm.nih.gov/pubmed/37376363
http://dx.doi.org/10.3390/polym15122716
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author Paral, Sandeep Kumar
Lin, Ding-Zheng
Cheng, Yih-Lin
Lin, Shang-Chih
Jeng, Jeng-Ywan
author_facet Paral, Sandeep Kumar
Lin, Ding-Zheng
Cheng, Yih-Lin
Lin, Shang-Chih
Jeng, Jeng-Ywan
author_sort Paral, Sandeep Kumar
collection PubMed
description Vat photopolymerization (VPP) is an effective additive manufacturing (AM) process known for its high dimensional accuracy and excellent surface finish. It employs vector scanning and mask projection techniques to cure photopolymer resin at a specific wavelength. Among the mask projection methods, digital light processing (DLP) and liquid crystal display (LCD) VPP have gained significant popularity in various industries. To upgrade DLP and LCC VPP into a high-speed process, increasing both the printing speed and projection area in terms of the volumetric print rate is crucial. However, challenges arise, such as the high separation force between the cured part and the interface and a longer resin refilling time. Additionally, the divergence of the light-emitting diode (LED) makes controlling the irradiance homogeneity of large-sized LCD panels difficult, while low transmission rates of near ultraviolet (NUV) impact the processing time of LCD VPP. Furthermore, limitations in light intensity and fixed pixel ratios of digital micromirror devices (DMDs) constrain the increase in the projection area of DLP VPP. This paper identifies these critical issues and provides detailed reviews of available solutions, aiming to guide future research towards developing a more productive and cost-effective high-speed VPP in terms of the high volumetric print rate.
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spelling pubmed-103026882023-06-29 A Review of Critical Issues in High-Speed Vat Photopolymerization Paral, Sandeep Kumar Lin, Ding-Zheng Cheng, Yih-Lin Lin, Shang-Chih Jeng, Jeng-Ywan Polymers (Basel) Review Vat photopolymerization (VPP) is an effective additive manufacturing (AM) process known for its high dimensional accuracy and excellent surface finish. It employs vector scanning and mask projection techniques to cure photopolymer resin at a specific wavelength. Among the mask projection methods, digital light processing (DLP) and liquid crystal display (LCD) VPP have gained significant popularity in various industries. To upgrade DLP and LCC VPP into a high-speed process, increasing both the printing speed and projection area in terms of the volumetric print rate is crucial. However, challenges arise, such as the high separation force between the cured part and the interface and a longer resin refilling time. Additionally, the divergence of the light-emitting diode (LED) makes controlling the irradiance homogeneity of large-sized LCD panels difficult, while low transmission rates of near ultraviolet (NUV) impact the processing time of LCD VPP. Furthermore, limitations in light intensity and fixed pixel ratios of digital micromirror devices (DMDs) constrain the increase in the projection area of DLP VPP. This paper identifies these critical issues and provides detailed reviews of available solutions, aiming to guide future research towards developing a more productive and cost-effective high-speed VPP in terms of the high volumetric print rate. MDPI 2023-06-17 /pmc/articles/PMC10302688/ /pubmed/37376363 http://dx.doi.org/10.3390/polym15122716 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Paral, Sandeep Kumar
Lin, Ding-Zheng
Cheng, Yih-Lin
Lin, Shang-Chih
Jeng, Jeng-Ywan
A Review of Critical Issues in High-Speed Vat Photopolymerization
title A Review of Critical Issues in High-Speed Vat Photopolymerization
title_full A Review of Critical Issues in High-Speed Vat Photopolymerization
title_fullStr A Review of Critical Issues in High-Speed Vat Photopolymerization
title_full_unstemmed A Review of Critical Issues in High-Speed Vat Photopolymerization
title_short A Review of Critical Issues in High-Speed Vat Photopolymerization
title_sort review of critical issues in high-speed vat photopolymerization
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10302688/
https://www.ncbi.nlm.nih.gov/pubmed/37376363
http://dx.doi.org/10.3390/polym15122716
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