Naslov
The influence of certain characteristics of screen printing plates and inks on deposition of ink coatings on anodized aluminum substrates

Autori
Mahović Poljaček, Sanja ; Tomašegović, Tamara ; Theohari, Stamatina ; Komporozou, G. ; Nikolaou, M. ; Tsoukala, S.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni

Izvornik
Proceedings of the 52nd Conference of the IC: “Print Education – Challenges in an uncharted world” / Gatsou, Chrysoula ; Tsigonias, Marios - Atena : HELGRAMED – The Hellenic Union of Graphic Arts and Media Technology Engineers, 2021, 39-52

ISBN
978-618-81734-2-2

Skup
52nd Annual Conference of the IC International Circle: Print Education – Challenges in an Uncharted World

Mjesto i datum
Atena, Grčka, 19.09.2021. - 24.09.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
screen printing ; printing plates ; printing inks ; aluminium substrate

Sažetak
Screen printing is a printing technique widely used for variable applications (textile printing, special effects, printed electronics etc.) and it can be used for application of different technical coatings on various substrates. The quality of reproduced image depends on properties of used printing plates, properties of substrates and on the printing process. Among the various types of printing substrates for special or external applications, aluminium has gain a great interest due to its superior decorative, fashionable design appearance and unique properties. In the present study, the printability of aluminium with respect to printing conditions in screen printing technique was investigated. In particular, AA1050 alloy specimens were chemically pretreated and anodized, thereby affecting the surface morphology and properties of the printing substrate. Three types of printing plates with different meshes and printing inks of different compositions were used in printing process. Measurements of contact angles and calculations of surface free energy were performed for the analysis of the aluminium samples. The properties related with the thickness and morphology of the printed coatings, as well as the optical density and CIELab values, the light fastness and adhesion of the prints were observed. The results showed that a) the aluminium alloy has similar amount of polar and dispersive components of the surface free energy with a slightly higher amount of dispersive component ; b) different compositions of printing inks cause a slightly different adsorption of ink coatings on aluminium substrate and c) the usage of the printing plates with different meshes has a great influence on the thickness of the printed coatings. One can conclude that the improvement of the quality of the imprints, especially for outdoor and other demanding specific applications could be achieved by pretreatment of aluminium substrates under the applied conditions in relation to the selected composition of the printing inks and types of printing plates described in this study. The scientific outcomes that concern the influence of printing parameters combined with the morphology (thickness, porosity, etc.) of aluminum substrate on print quality and properties of imprints may be combined with further practical applications in the field of printing technology.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

POVEZANOST RADA