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Modifying the qualitative properties of print by surface treatment of flexographic printing plate

David Beynon Orcid Logo, Timothy Claypole

Journal of Print and Media Technology Research, Volume: 6, Issue: 2, Pages: 57 - 67

Swansea University Author: David Beynon Orcid Logo

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DOI (Published version): 10.14622/JPMTR-1705

Abstract

In the fast-pace technology development in graphic industry, modern flexography has found its domain mostly inthe packaging sector and it is increasingly of interest for functional printing. Functional printing has a relatively lowmarket value but greater interest in research. Due to the new qualita...

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Published in: Journal of Print and Media Technology Research
ISSN: 2223-8905 2414-6250
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa35162
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The application of digitally controlled processes and procedures hastaken the place of the analogue production, together with the new methods of material processing and improvements ofthe materials themselves. This research focuses on the functional modification of photopolymer flexographic printingplate&#x2019;s properties with the aim of achieving optimal output quality. During the transfer of the printing ink from theanilox to the printing plate and then to the printing substrate, surface properties of the printing plate influence thequality of the print. Therefore, surface properties of the printing plate should be compatible with the used printingink and the printing substrate, which is especially important when using new formulations of inks and experimentingwith different printing substrates and applications, for example in functional printing. In this research, samples of photopolymerflexographic printing plates were exposed to UV-ozone treatment in order to modify the surface propertiesof the photopolymer material. Results have displayed significant changes in surface free energy of the photopolymermaterial when the printing plate samples were exposed to the UV-ozone for periods up to 5 minutes. In order to analyzethe quality of the prints produced with UV-ozoned flexographic printing plates, test prints were produced. Printsproduced with printing plates with longer UV-ozone treatment have displayed the qualitative changes in the reproductionof fine printed elements, i.e. the width of fine lines, coverage values, ink volume on print and the definition ofthe shape and edges of printed elements. Changes of named properties of the print are significant for conventional,and in many cases for functional printing. Performed research proved that the functional modification of flexographicprinting plates with the aim of improving the print quality is possible. The UV-ozone treatment is a procedure wherethe printing plate is exposed to significantly higher energy than with conventional UVA and UVC tubes. 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spelling 2018-03-12T10:05:02.8727966 v2 35162 2017-09-07 Modifying the qualitative properties of print by surface treatment of flexographic printing plate f5cf40043658d0b8a747ef6224019939 0000-0002-8189-9489 David Beynon David Beynon true false 2017-09-07 MTLS In the fast-pace technology development in graphic industry, modern flexography has found its domain mostly inthe packaging sector and it is increasingly of interest for functional printing. Functional printing has a relatively lowmarket value but greater interest in research. Due to the new qualitative requirements, workflows and materials usedin flexography had to be updated and improved. The application of digitally controlled processes and procedures hastaken the place of the analogue production, together with the new methods of material processing and improvements ofthe materials themselves. This research focuses on the functional modification of photopolymer flexographic printingplate’s properties with the aim of achieving optimal output quality. During the transfer of the printing ink from theanilox to the printing plate and then to the printing substrate, surface properties of the printing plate influence thequality of the print. Therefore, surface properties of the printing plate should be compatible with the used printingink and the printing substrate, which is especially important when using new formulations of inks and experimentingwith different printing substrates and applications, for example in functional printing. In this research, samples of photopolymerflexographic printing plates were exposed to UV-ozone treatment in order to modify the surface propertiesof the photopolymer material. Results have displayed significant changes in surface free energy of the photopolymermaterial when the printing plate samples were exposed to the UV-ozone for periods up to 5 minutes. In order to analyzethe quality of the prints produced with UV-ozoned flexographic printing plates, test prints were produced. Printsproduced with printing plates with longer UV-ozone treatment have displayed the qualitative changes in the reproductionof fine printed elements, i.e. the width of fine lines, coverage values, ink volume on print and the definition ofthe shape and edges of printed elements. Changes of named properties of the print are significant for conventional,and in many cases for functional printing. Performed research proved that the functional modification of flexographicprinting plates with the aim of improving the print quality is possible. The UV-ozone treatment is a procedure wherethe printing plate is exposed to significantly higher energy than with conventional UVA and UVC tubes. Therefore, theduration of the UV-ozone treatment must be precisely adjusted in order to maximize the quality of the print, while atthe same time maintaining printing plate’s functionality. Journal Article Journal of Print and Media Technology Research 6 2 57 67 2223-8905 2414-6250 flexography, photopolymer, UV-ozone, surface free energy, ink transfer 31 7 2017 2017-07-31 10.14622/JPMTR-1705 http://iarigai.com/publications/journals/2-2017/ COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2018-03-12T10:05:02.8727966 2017-09-07T17:04:46.2517529 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering David Beynon 0000-0002-8189-9489 1 Timothy Claypole 2 0035162-04102017085031.pdf tomasegovic2017.pdf 2017-10-04T08:50:31.1730000 Output 1439802 application/pdf Version of Record true 2018-01-31T00:00:00.0000000 4/10/17 email from publisher saying we can publish the VoR 6 months after publication. RK true eng
title Modifying the qualitative properties of print by surface treatment of flexographic printing plate
spellingShingle Modifying the qualitative properties of print by surface treatment of flexographic printing plate
David Beynon
title_short Modifying the qualitative properties of print by surface treatment of flexographic printing plate
title_full Modifying the qualitative properties of print by surface treatment of flexographic printing plate
title_fullStr Modifying the qualitative properties of print by surface treatment of flexographic printing plate
title_full_unstemmed Modifying the qualitative properties of print by surface treatment of flexographic printing plate
title_sort Modifying the qualitative properties of print by surface treatment of flexographic printing plate
author_id_str_mv f5cf40043658d0b8a747ef6224019939
author_id_fullname_str_mv f5cf40043658d0b8a747ef6224019939_***_David Beynon
author David Beynon
author2 David Beynon
Timothy Claypole
format Journal article
container_title Journal of Print and Media Technology Research
container_volume 6
container_issue 2
container_start_page 57
publishDate 2017
institution Swansea University
issn 2223-8905
2414-6250
doi_str_mv 10.14622/JPMTR-1705
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
url http://iarigai.com/publications/journals/2-2017/
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description In the fast-pace technology development in graphic industry, modern flexography has found its domain mostly inthe packaging sector and it is increasingly of interest for functional printing. Functional printing has a relatively lowmarket value but greater interest in research. Due to the new qualitative requirements, workflows and materials usedin flexography had to be updated and improved. The application of digitally controlled processes and procedures hastaken the place of the analogue production, together with the new methods of material processing and improvements ofthe materials themselves. This research focuses on the functional modification of photopolymer flexographic printingplate’s properties with the aim of achieving optimal output quality. During the transfer of the printing ink from theanilox to the printing plate and then to the printing substrate, surface properties of the printing plate influence thequality of the print. Therefore, surface properties of the printing plate should be compatible with the used printingink and the printing substrate, which is especially important when using new formulations of inks and experimentingwith different printing substrates and applications, for example in functional printing. In this research, samples of photopolymerflexographic printing plates were exposed to UV-ozone treatment in order to modify the surface propertiesof the photopolymer material. Results have displayed significant changes in surface free energy of the photopolymermaterial when the printing plate samples were exposed to the UV-ozone for periods up to 5 minutes. In order to analyzethe quality of the prints produced with UV-ozoned flexographic printing plates, test prints were produced. Printsproduced with printing plates with longer UV-ozone treatment have displayed the qualitative changes in the reproductionof fine printed elements, i.e. the width of fine lines, coverage values, ink volume on print and the definition ofthe shape and edges of printed elements. Changes of named properties of the print are significant for conventional,and in many cases for functional printing. Performed research proved that the functional modification of flexographicprinting plates with the aim of improving the print quality is possible. The UV-ozone treatment is a procedure wherethe printing plate is exposed to significantly higher energy than with conventional UVA and UVC tubes. Therefore, theduration of the UV-ozone treatment must be precisely adjusted in order to maximize the quality of the print, while atthe same time maintaining printing plate’s functionality.
published_date 2017-07-31T03:44:06Z
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