Tokić, Stella (2020) Usporedba prirodnog i ubrzanog starenja otisaka na tiskovnim podlogama s alternativnim vlakancima. Master's thesis - Graduate Programme. Grafički fakultet. [Mentor: Bates, Irena].
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Abstract
Papir je najzastupljenija tiskovna podloga za otiskivanje ambalaže i etiketa. Pošto je osnovni izvor sirovine za proizvodnju papirnatih tiskovnih podloga u svijetu još uvijek drvo, globalna svijest o rizicima eksploatacija šuma je u porastu kao i važnost recikliranja i pronalaženja alternativnih izvora celuloznih vlakanca. U ovom radu za izradu tiskovnih podloga koristit će se slama kao nusprodukt ratarske proizvodnje žitarica te s time potencijalna lignocelulozna sirovina. S obzirom da je starenje neizbježan proces svake tiskovne podloge ali i otiska, a degradacija kvalitete otiska uslijed starenja uveliko ovisi o svojstvima tiskovne podloge i boje, ovo je istraživanje usmjereno na analizu kvalitete i optičku stabilnost otiska na tiskovnim podlogama s vlakancima slame nakon izlaganja prirodnom i ubrzanom starenju. Tiskovne podloge za potrebe ovog istraživanja izrađene su u laboratorijskim uvjetima miješanjem reciklirane drvne pulpe s različitim udjelima vlakanca slame. Tiskovne podloge potom su otisnute digitalnom tehnikom (UV inkjet), te nakon spektrofotometrijskih mjerenja odvojene u dvije skupine (za prirodno i za ubrzano starenje u uređaju SunTEST XLS+). Cilj ovog rada je usporediti i istražiti kvalitetu i optičku stabilnost otiska na osnovu promjena kolorimetrijskih vrijednosti i definiranja Euklidove razlike boje (ΔE₀₀) nakon izlaganja starenju.
| Item Type: | Master's thesis - Graduate Programme |
|---|---|
| Mentor name: | Bates, Irena |
| Thesis Committee: | Plazonić, Ivana and Bates, Irena and Džimbeg Malčić, Vesna |
| Defence date: | 22 September 2020 |
| Abstract in english: | Paper is the most common printing medium for printing packaging and labels. As the main source of raw material for the production of paper printing substrates in the world is still wood, global awareness of the risks of forest exploitation is on the rise as is the importance of recycling and finding alternative sources of cellulose fibers. In this work, straw will be used as a by-product of cereal production and thus a potential lignocellulosic raw material for the production of printing substrate. Since aging is an inevitable process of any printing substrate but also of the printed substrate and the degradation of print quality due to aging largely depends on the properties of the printing substrate and inks. This research is focused on the analysis of the quality and optical stability of prints on printing substrate containing straw fibers after exposure to natural and accelerated aging. Press substrates for the purposes of this study were made in laboratory conditions by mixing recycled wood pulp with different proportions of straw fiber. The printing media were then printed by digital technique (UV inkjet), and after spectrophotometric measurements separated into two groups (for natural and accelerated aging in the SunTEST XLS + device). The aim of this paper is to compare and examinethe quality and optical stability of the print based on changes in colorimetric values and to defining the Euclidean color difference (ΔE₀₀) after exposure to aging. |
| Uncontrolled Keywords: | alternativna vlakanca, digitalni tisak, inkjet, kolorimetrijske vrijednosti, prirodno starenje, reciklirana drvna vlakanca, ubrzano starenje, vlakanca slame |
| Keywords in english: | accelerated aging, alternative fibers, colorimetrics value, digital printing, inkjet , natural aging, non-wood fibers, recycled wood fibers |
| Subjects: | TECHNICAL SCIENCES > Graphic Technology |
| Institution: | Grafički fakultet |
| City: | Zagreb |
| Number of Pages: | 46 |
| Callnumber: | BAT 2020 TOK |
| Inventory number: | DB884 |
| Depositing User: | Nina Jelača |
| Status: | Unpublished |
| Date Deposited: | 16 Dec 2020 08:58 |
| Last Modified: | 16 Dec 2020 08:58 |
| URI: | http://eprints.grf.unizg.hr/id/eprint/3269 |
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