engleski

Natural zeolite as a filler in the base ink jet paper sheet

The aim of this research was to investigate the influence of natural zeolite clinoptilolite used as filler on printability of paper and its print quality. Paper sheets were prepared with the addition of 20% of fillers, where natural zeolite were added to calcium carbonate in different u.w.% (20, 40, 60). The zeolite originates from a sedimentary deposit in Donje Jelenje, Croatia. The zeolite tuff is substantially composed from clinoptilolite. Its particle size distribution is broad and the structure is micro and mezzo porous. The addition of natural zeolite as filler resulted in higher bulk of paper sheets and more porous structure. The absorption capacity and the absorption rate slightly increased too. The roughness of surface increased leading to more hydrophobic surface. Natural zeolite with its broad particle size distribution, higher amount of large particles and yellow-green colour resulted in slightly lower opacity, ISO brightness and CIE whiteness of sheets. When used for inkjet printing the zeolite containing substrates showed positive influence on print quality. Smaller wicking and bleeding effects were noticed. The paper hue does not influence the colour density of CMYK prints.

natural zeolits; CaCO3 – zeolit sheet; printability; ink jet prints; print quality

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