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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F13%3A39897386%21RIV14-MSM-25310___
rdf:type
skos:Concept n15:Vysledek
dcterms:description
The printability of offset inks strongly depends on the rheological properties of printing inks, their tack and fountain solution pick-up behaviour. In this work, two process hybrid inks (XSYS Print Solution) and two UV curable inks (Sun Chemical) were tested. Studied process inks were in both cases cyan and magenta. UV offset printing inks dry by chain reaction (free radical or cationic polymerization) that is induced by UV radiation. UV inks give a number of advantages compared to conventional offset printing inks. Between the most important ones belong rapid curing time (fractions of second), high print gloss, abrasion resistant surface, very good chemical resistance and also less problems of sample blocking. Hybrid inks are based on conventional offset printing inks, but contain part of UV curable components as well and are able to run on conventional press machine equipped with UV radiation source. Hybrid inks are cured by two various mechanisms (oxypolymerization and polymerization induced by UV radiation). One of the major advantages of hybrid ink technology is that smaller commercial printers can add inline UV varnishing to their operations at relatively low cost. The hybrid inks should be printable with blankets that are also suitable for conventional inks (NBR rubber) compared to UV inks that need special blankets (based on EPDM). The tested physical properties were evaluated for unemulsified inks and their emulsions with fountain solution (90 % of water, 5 % of fountain solution additive V50 (POOLA) and 5 % of isopropyl alcohol). Emulsions of inks and fountain solution were prepared by Duke Ink Water Emulsification Tester Model D-10 and were characterised by the amount and rate of fountain solution pick-up. The rheological properties (flow behaviour, thixotrophy, and viscosity relaxation) were measured by rotational rheometer RV1 HAAKE. The printability of offset inks strongly depends on the rheological properties of printing inks, their tack and fountain solution pick-up behaviour. In this work, two process hybrid inks (XSYS Print Solution) and two UV curable inks (Sun Chemical) were tested. Studied process inks were in both cases cyan and magenta. UV offset printing inks dry by chain reaction (free radical or cationic polymerization) that is induced by UV radiation. UV inks give a number of advantages compared to conventional offset printing inks. Between the most important ones belong rapid curing time (fractions of second), high print gloss, abrasion resistant surface, very good chemical resistance and also less problems of sample blocking. Hybrid inks are based on conventional offset printing inks, but contain part of UV curable components as well and are able to run on conventional press machine equipped with UV radiation source. Hybrid inks are cured by two various mechanisms (oxypolymerization and polymerization induced by UV radiation). One of the major advantages of hybrid ink technology is that smaller commercial printers can add inline UV varnishing to their operations at relatively low cost. The hybrid inks should be printable with blankets that are also suitable for conventional inks (NBR rubber) compared to UV inks that need special blankets (based on EPDM). The tested physical properties were evaluated for unemulsified inks and their emulsions with fountain solution (90 % of water, 5 % of fountain solution additive V50 (POOLA) and 5 % of isopropyl alcohol). Emulsions of inks and fountain solution were prepared by Duke Ink Water Emulsification Tester Model D-10 and were characterised by the amount and rate of fountain solution pick-up. The rheological properties (flow behaviour, thixotrophy, and viscosity relaxation) were measured by rotational rheometer RV1 HAAKE.
dcterms:title
Comparative Study of the Physical Properties of Hybrid and UV Offset Inks Comparative Study of the Physical Properties of Hybrid and UV Offset Inks
skos:prefLabel
Comparative Study of the Physical Properties of Hybrid and UV Offset Inks Comparative Study of the Physical Properties of Hybrid and UV Offset Inks
skos:notation
RIV/00216275:25310/13:39897386!RIV14-MSM-25310___
n15:predkladatel
n16:orjk%3A25310
n3:aktivita
n12:S n12:I
n3:aktivity
I, S
n3:cisloPeriodika
prosinec
n3:dodaniDat
n9:2014
n3:domaciTvurceVysledku
n6:5009790 n6:5263034
n3:druhVysledku
n13:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
66094
n3:idVysledku
RIV/00216275:25310/13:39897386
n3:jazykVysledku
n4:eng
n3:klicovaSlova
Misting; Tack; Rheology; Hybrid Ink; UV Ink; Offset
n3:klicoveSlovo
n5:Misting n5:Offset n5:Rheology n5:Tack n5:UV%20Ink n5:Hybrid%20Ink
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[05F9917A0159]
n3:nazevZdroje
Scientific Papers of the University of Pardubice, Series A, Faculty of Chemical Technology
n3:obor
n14:JJ
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n9:2013
n3:svazekPeriodika
19
n3:tvurceVysledku
Odstrčilová, Helena Vališ, Jan Jašúrek, Bohumil
s:issn
1211-5541
s:numberOfPages
8
n7:organizacniJednotka
25310