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  4. Interlayer Adhesion of Coating System in Analogue and Digital Printing Technologies Formed on Lightweight Honeycomb Furniture Panels
 
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Interlayer Adhesion of Coating System in Analogue and Digital Printing Technologies Formed on Lightweight Honeycomb Furniture Panels

Type
Journal article
Language
English
Date issued
2024
Author
Tokarczyk, Maciej
Lis, Barbara Teresa 
Krystofiak, Tomasz 
Faculty
Wydział Leśny i Technologii Drewna
PBN discipline
forestry
Journal
Coatings
ISSN
2079-6412
DOI
10.3390/coatings14091124
Web address
https://www.mdpi.com/2079-6412/14/9/1124
Volume
14
Number
9
Pages from-to
art. 1124
Abstract (EN)
This article concerns research into the influence of the energy dose distributed by UV lamps on selected parameters of varnish coatings formed during the varnishing process of lightweight cellular panels. The lightweight cellular board used in the study was made according to an innovative solution. The surface finishing of the boards was carried out using the roller method in combination with digital and analogue printing under industrial conditions. Contact angle measurements of the obtained varnish coatings were carried out, from which the surface free energy was calculated. In addition, interlayer adhesion was assessed by pull-off tests. Irrespective of the radiation dose, higher contact angle values (54.3–89.9°) were recorded for the last two applied layers (base coat 2 and base coat 3) than for the other coatings (39.6–64.1°). For all systems tested, the γsp component showed lower values (2.25–28.99 mJ/m2) than γsd (28.66–32.80 mJ/m2). The adhesion test results ranged from 0.5 to 0.9 MPa, although with varying types of delamination. Based on the test results, the most favourable variants from the furniture manufacturer’s point of view were selected that provided the desired level of adhesion, in which cohesive damage located within the substrate (A) predominated.
Keywords (EN)
  • surface

  • UV lacquer system

  • UV ink system

  • printing technology

  • adhesion

License
cc-bycc-by CC-BY - Attribution
Open access date
September 2, 2024
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