Acoustic emission and tack of heat-set inks during setting on MWCpapers and fountain solution emulsification
2007 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, Vol. 22, no 4, 432-440 p.Article in journal (Refereed) Published
To investigate the relationship between ink film splitting noise and ink tack, two tack-measuring devices were monitored by a microphone. The first of these was the Deltack(R) (Prufbau), to study tack build on paper, and the second was the Hydroscope(R) (Testprint), measuring ink tack change with fountain solution level. Three medium weight coated (MWC) papers and two heat-set inks of differing tack and emulsion capacity were analysed. It was concluded that acoustic average power is a consequence of cavitation and flow mechanisms, and not necessarily linked linearly to tack. The Hydroscope measurements usually gave decreasing tack, average power and average frequency with increasing fountain solution concentration; however fountain solution droplets can also act as an extra sound source. A relation between average frequency and droplet size was postulated. The results demonstrate the sensitivity of the acoustic method and support its implementation for further studies in the field.
Place, publisher, year, edition, pages
2007. Vol. 22, no 4, 432-440 p.
film splitting, printing, ink tack, cavitation noise, fountain solution, water-in-ink emulsion
IdentifiersURN: urn:nbn:se:kth:diva-5437ISI: 000252298100005OAI: oai:DiVA.org:kth-5437DiVA: diva2:9801
Uppdaterad från submitted till published: 20100928.
QC 201009282006-03-082006-03-082010-09-28Bibliographically approved