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https://doi.org/10.25027/agj2017.28.v29i3.163

Optical properties of deinked pulp containing thermochromic offset inks

Sonja Jamnicki Hanzer   ORCID icon orcid.org/0000-0002-1064-8578 ; Faculty of Graphic Arts University of Zagreb, Zagreb, Croatia
Marina Vukoje ; Sveučilište u Zagrebu Grafički fakultet, Zagreb, Hrvatska
Matea Zadro Tovernić ; Faculty of Graphic Arts University of Zagreb, Zagreb, Croatia

Puni tekst: engleski, pdf (1 MB) str. 21-29 preuzimanja: 74* citiraj
APA 6th Edition
Jamnicki Hanzer, S., Vukoje, M. i Zadro Tovernić, M. (2018). Optical properties of deinked pulp containing thermochromic offset inks. Acta graphica, 29 (3), 21-29. https://doi.org/10.25027/agj2017.28.v29i3.163
MLA 8th Edition
Jamnicki Hanzer, Sonja, et al. "Optical properties of deinked pulp containing thermochromic offset inks." Acta graphica, vol. 29, br. 3, 2018, str. 21-29. https://doi.org/10.25027/agj2017.28.v29i3.163. Citirano 25.02.2020.
Chicago 17th Edition
Jamnicki Hanzer, Sonja, Marina Vukoje i Matea Zadro Tovernić. "Optical properties of deinked pulp containing thermochromic offset inks." Acta graphica 29, br. 3 (2018): 21-29. https://doi.org/10.25027/agj2017.28.v29i3.163
Harvard
Jamnicki Hanzer, S., Vukoje, M., i Zadro Tovernić, M. (2018). 'Optical properties of deinked pulp containing thermochromic offset inks', Acta graphica, 29(3), str. 21-29. https://doi.org/10.25027/agj2017.28.v29i3.163
Vancouver
Jamnicki Hanzer S, Vukoje M, Zadro Tovernić M. Optical properties of deinked pulp containing thermochromic offset inks. Acta graphica [Internet]. 2018 [pristupljeno 25.02.2020.];29(3):21-29. https://doi.org/10.25027/agj2017.28.v29i3.163
IEEE
S. Jamnicki Hanzer, M. Vukoje i M. Zadro Tovernić, "Optical properties of deinked pulp containing thermochromic offset inks", Acta graphica, vol.29, br. 3, str. 21-29, 2018. [Online]. https://doi.org/10.25027/agj2017.28.v29i3.163

Sažetak
This paper evaluates the efficiency of thermochromic offset prints recycling using deinking flotation method. Since offset thermochromic inks differ in their composition from conventional offset inks, the aim of this re¬search was to determine how effectively they can be recycled. In the experimental part of the work, the labo¬ratory printing of two thermochromic inks was conducted. For both types of inks, white uncoated paper was used as a substrate. After accelerated aging, the prints were mixed in equal proportions and then recycled in laboratory conditions, by means of deinking flotation. During the recycling process, handsheets and filter pads were prepared from the pulp obtained before and after deinking flotation. Handsheets and filter pads were also prepared from unprinted paper that was used as printing substrate, in order to obtain reference samples. The deinking flotation efficiency was evaluated by calculating the flotation loss, ash elimination, pulp’s brightness and whiteness increase and determination of residual ink area. The obtained results indicate that thermochro¬mic prints are poorly deinkable. A small increase in deinked pulp’s brightness and whiteness (approx. 7% and 11%) is noticed. The image analysis shows that flotation deinking managed to eliminate around 40% of the to-tal dirt area of thermochromic ink.

Ključne riječi
thermochromic ink; deinking flotation; optical properties; colour change

Hrčak ID: 227400

URI
https://hrcak.srce.hr/227400

Posjeta: 144 *