Adhesion of varnish coatings as a background for analogue and digital printing technologies
Type
Journal article
Language
English
Date issued
2024
Author
Faculty
Wydział Leśny i Technologii Drewna
Journal
Applied Sciences
ISSN
2076-3417
Web address
Volume
14
Number
1
Pages from-to
art. 304
Abstract (EN)
In analogue and digital printing technologies, from 3 up to 12 layers of lacquer products are applied. Technological parameters significantly influence the adhesion in the coating system. This article refers to the analysis of the influence of selected technological parameters, such as the number of layers, energy doses distributed by the radiators, and line speed, on the topography and adhesion of varnish coatings formed in the process of varnishing with rollers and UV-curing systems. The appropriately prepared surface can be used as a background layer for the analogue and digital printing technology. Manufacturers must adapt the production process to the particular varnish to obtain finished products with the best possible performance properties. The state of surface free energy and finally adhesion can be assessed by theoretically determining the possibility of an adhesive bonding between the product and the substrate, taking into account the assumptions of the adsorption theory of adhesion and measurement of the contact angle (Θ). An experimental confirmation of adhesion measurements included removing the coatings from the substrate via stamps glued to the coating.
License
CC-BY - Attribution
Open access date
December 29, 2023