Utjecaj lakiranja na mehanička svojstva ambalaže

master's thesis

• Author: Deni Macinić
• Mentor: Darko Babić (mentor)
• Committee member: Igor Majnarić (član povjerenstva)
• Committee member: Darko Babić (član povjerenstva)
• Committee member: Damir Modrić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2013-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

U teorijskom dijelu ovoga rada govori se o podjeli i funkciji ambalaže a posebice fleksibilne ambalaže. Objašnjava se princip rada ofsetnog stroja i njegovih osnovnih cjelina, a posebice jedinice za lakiranje. Sastav i svojstva papira i kartona kao najčešćih materijala za izradu fleksibilne ambalaže detaljno je opisan. Napravljena i opisana je njihova podjela po grmaturi i premazima. Također opširnije se objašnjava sastav i vrste lakova, te postupci sušenja lakova. Eksperimentalni dio ovoga rada posvećen je ispitivanju mehaničkih svojstava različitih kartona na kojima su napravljeni otisci. Kartoni su lakirani sa vododisperzivnim i UV lakom. Na Lorentzen & Wettre Bursting uređaju mjerilo se otpornost tri tipa kartona različitih gramatura i debljina na statičko probijanje. Taberovom metodom određena je krutost (pri savijanju) također za tri tipa kartona različitih debljina i gramatura. Također su ispitivana mehanička svojstava lakova koji su se koristili pri lakiranju. Na uređaju za ispitivanje otpornosti otiska na otiranje Hanatek RT4 mjerila se i odredila količina otiranja. Otisci su izlagani različitim pritiscima i brojevima okretaja. Dobiveni rezultati su obrađeni u Excel-u te su napravljene tablice. Za potrebe izrade grafičkog prikaza rezultata koristio se je software Origin pro 8.0.

Abstract (english)

The theoretical part of the thesis is centered on classification and function of packaging, with the emphases on the flexible packaging. In addition, the thesis describes how the offset machine and its main parts operate, especially the varnishing unit of the machine. Moreover, the structure and traits of paper and paperboard - the most commonly used materials for the production of the flexible packaging - are described in detail. Furthermore, the thesis describes the properties of paper and paperboard based on grammage and coat. In addition, the thesis describes the structure and types of varnishes in detail, as well as the processes of drying the varnish. The experimental part of the thesis is centered on the mechanical properties of different paperboard that has prints. Paperboard was polished with a water-based varnish and UV coating. The static resistance of three types of paperboard with different grammage and thickness was measured by the Lorentzen & Wettre Bursting machine. Taber method was used to determine the bending stiffness of the three types of paperboard with different grammage and thickness. In addition, the mechanical properties of varnishes that were used for polishing were tested. Hanatek RT4 Rub & Abrasion Tester was used for a rub test. The prints were exposed to different pressures and rotational speed. The results were processed in Excel and the appropriate tables were given. The software Origin pro 8.0. was used for graphing and data analysis.

• Keywords: lakiranje; ofset; papir; karton; ambalaža; otiranje; krutost; jačina pucanja
• Keywords (english): Varnishing; offset; paper; paperboard; packaging; ribbing; bending stiffness; static resistance
• Language: croatian
• URN:NBN: urn:nbn:hr:216:923481
• Study programme: Title: Graphic technology; specializations in: Graphic technology, Design of graphic products; Course: Graphic technology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije (sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-04-26 13:55:19