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  • The objective was to study rheological behaviour of thermochromic offset inks. Thermochromic ink is a composite of a thermochromic pigment and a vehicle. The pigment ie commonly a leuco-dye-developer-solvent system encapsulated in polymeric envelope. The polymeric envelope of studied inks was made from melamine formaldehyde resin. The vehicle consists of a binder, in case of offset inks it is a resin, waxes, driers and solvent. The solvents used in studied inks were non-polar compounds with larger molecular weight. The rheological properties of thermochromic inks at 40 °C were similar to Newtonian liquids. Shear viscosity was almost stable through shear rates within the region 100-2000 s-1 and its values were much lower than shear viscosities measured at 20 °C. The results demonstrate a very dramatic influence of the temperature on the shear viscosity of studied inks, that can result in non-uniform ink transfer in inking unit of printing press.
  • The objective was to study rheological behaviour of thermochromic offset inks. Thermochromic ink is a composite of a thermochromic pigment and a vehicle. The pigment ie commonly a leuco-dye-developer-solvent system encapsulated in polymeric envelope. The polymeric envelope of studied inks was made from melamine formaldehyde resin. The vehicle consists of a binder, in case of offset inks it is a resin, waxes, driers and solvent. The solvents used in studied inks were non-polar compounds with larger molecular weight. The rheological properties of thermochromic inks at 40 °C were similar to Newtonian liquids. Shear viscosity was almost stable through shear rates within the region 100-2000 s-1 and its values were much lower than shear viscosities measured at 20 °C. The results demonstrate a very dramatic influence of the temperature on the shear viscosity of studied inks, that can result in non-uniform ink transfer in inking unit of printing press. (en)
Title
  • Rheological properties of thermochromic offset inks
  • Rheological properties of thermochromic offset inks (en)
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  • Rheological properties of thermochromic offset inks
  • Rheological properties of thermochromic offset inks (en)
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  • RIV/00216275:25310/10:39881423!RIV11-MSM-25310___
http://linked.open...avai/riv/aktivita
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  • P(MEB090906), Z(MSM0021627501)
http://linked.open...vai/riv/dodaniDat
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  • 285263
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  • RIV/00216275:25310/10:39881423
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • thermochromic ink, offset ink, rheology (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [3532F80EDAA9]
http://linked.open...v/mistoKonaniAkce
  • Ljubljana
http://linked.open...i/riv/mistoVydani
  • Ljubljana
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  • Proceedings of 5th International Symposium on Novelties in Graphics
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  • Kaplanová, Marie
  • Panák, Ondrej
  • Klanjšek Gunde, Marta
  • Friškovec, Mojca
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
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number of pages
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  • Univerza v Ljubljani
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  • 978-961-6045-79-7
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  • 25310
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