Development of non-wood fibers has been one of strategies to ensure a sustainable fiber supply, including plantation management, reforestation and recycling. Some of alternative fibers are algae that ...can be used as raw material for papermaking. The Shiro Alga Carta papers made from algae in combination with Forest Stewardship Council certified fibers (FSC - fibers) were used for this research. Three offset inks were used in printing: vegetable-based inks with different amount of renewable raw materials and mineral oil - based ink. Three series of prints were made: non-varnished, varnished with water-based dispersion, and varnished with UV cured varnish. The possibility of reusing fibers was determined by methods of re-pulping (loop I, loop II, loop III). The vegetable based ink toward improved structure give bather results in terms of brightness, ink content and dirt count and area compared with the mineral oil-based ink. Something lower brightness gain and DELTAERIC is obtained with water-based dispersion overprint samples. The lowest results are obtained for samples overprinted with UV cured varnish. The results of the research contribute to the explanation of paper/ink/varnish interaction on the reuse of the fibers, which takes into the area of the ecological sustainable development.
The research aims to find out the crucial factors in the design phase of packaging products, which are related to the determination of environmental influences on sustainable materials. The paper ...presents the results of research into the influence of environmentally friendly cardboard and the separation of yellow offset ink on the optical properties of prints exposed to thermal aging without and with exposure to NOsub.2. The samples were obtained under real conditions on a Roland 705 printing machine. The colorimetric characteristics of the print and its stability were determined in the research. The research is significant for graphic reproduction in the domain of testing the quality of the print itself, which is defined by certain raster characteristics. The research covers prints in 100%, 70% RTV, 50% RTV, and 30% RTV. The intensity of the tonal experience will depend on the interaction of the substrate with the raster and different types of inks in offset printing as a function of the experimental conditions. The ink characteristics of prints ∆L*, ∆a*, ∆b*, and ∆E were determined. The research results show that ink I1, with about 80% renewable raw materials, achieves the best stability under the specified experimental conditions.
The research aims to find out the crucial factors in the design phase of packaging products, which are related to the determination of environmental influences on sustainable materials. The paper ...presents the results of research into the influence of environmentally friendly cardboard and the separation of yellow offset ink on the optical properties of prints exposed to thermal aging without and with exposure to NO2. The samples were obtained under real conditions on a Roland 705 printing machine. The colorimetric characteristics of the print and its stability were determined in the research. The research is significant for graphic reproduction in the domain of testing the quality of the print itself, which is defined by certain raster characteristics. The research covers prints in 100%, 70% RTV, 50% RTV, and 30% RTV. The intensity of the tonal experience will depend on the interaction of the substrate with the raster and different types of inks in offset printing as a function of the experimental conditions. The ink characteristics of prints ∆L*, ∆a*, ∆b*, and ∆E were determined. The research results show that ink I1, with about 80% renewable raw materials, achieves the best stability under the specified experimental conditions.
U članku je prikazan razvoj tehničke i industrijske baštine u domeni etiketa, papirne i kartonske ambalaže u Hrvatskoj u razdoblju od 19. do 21. stoljeća. Tisak na ambalaži prvo se pojavio u obliku ...etiketa. Date su karakte- ristike etiketa u odnosu na grafičko oblikovanje, kvalitetu proizvodnje, pred- stavljanje svog vremena i komunikaciju u odnosu na međunarodne trendove. Osim toga prikazuje se razvoj papirne i kartonske ambalaže uključujući obrt, a zatim industrijsku proizvodnju. Opisan je razvoj grafičkog oblikovanja i tehnologije procesa proizvodnje ambalaže od valovitog kartona, kao i viso- kokvalitetne proizvode za farmaceutsku i prehrambenu industriju, koji zahti- jevaju nove tehnologije i iskorake u proizvodnji, te papirne ambalaže. Poseb- no se diskutira ekološki aspekt i primjena održivog razvoja u industrijskoj proizvodnji ambalaže u Hrvatskoj.
U radu se prikazuju rezultati istraživanja stabilnosti ofsetnih otisaka sa separacijom magenta bojila. U tisku se koriste bojila s različitim udjelom prirodno obnovljive sirovine, a usporedbe radi i ...konvencionalno bojilo na osnovi mineralnog ulja. Tiskovne podloge su: ekološko prihvatljiv karton iz grupacije GC2 i karton s određenim sadržajem zelenih algi iz laguna Jadranskog mora. Otisci su načinjeni u realnim uvjetima na petobojnom ofsetnom stroju Roland 705. Tiskovna podloga kao i sve serije otisaka izložene su zračenju kroz prozorsko staklo određenom dinamikom. Rezultati istraživanja pokazuju smanjenje spektralne refleksije R457 kartona s algama za 17,9% manje u odnosu na karton GC2 nakon izlaganja 7 dana zračenju kroz prozorsko staklo. Daljnjim izlaganjem taj se postotak smanjuje. U radu se prikazuju utvrđene promjene u CIE L*a*b* prostoru boja za otiske, te ΔE vrijednosti u funkciji kemijskog sastava boja i tiskovne podloge, te uvjeta izlaganja uzoraka zračenju kroz prozorsko staklo.
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