The Study on Print Quality Attributes of In-Mold Labeling Using Digital Printing

• Main Authors: Yang, Tzu-Ting, 楊子霆
• Other Authors: Chen, Chang-Lang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/65357078749618960912

碩士 === 國立臺灣藝術大學 === 圖文傳播藝術學系碩士班 === 101 === The net profit of traditional printing industry has been decreasing year after year. Offset printing companies are trapped in this negative situation. As digital publishing age emerges, the unpromising future for traditional printing industry is at hand. Paper book has been replaced by electronic book, thus diminished public demand for printing industry. Facing this decreasing publishing market, what could the industry do, to increase the market? On the other hand, as environmentalism raised, printing industry will have to face the concerns of minimizing industrial waste and reducing carbon emission. The flexible printing ability and low pollution production of digital printing has made this new-rising black horse a future shining star in various trend reports. In-mold labeling is a profiting manufacturing process in in-mold decoration technology. Combining characteristics of digital printing, in-mold labeling is with a promising potential. This thesis discusses different kinds of digital printing machines by using varieties of styles and settings. In the experiments, two kinds of digital press will be discussed (HP Indigo 5500, Mimaki UJF-3042) and three passes (8 Pass, 16 Pass, and 32 Pass). After printing on PP films, the mold will be formed by in-mold labeling skill. Through the measure analysis test charts, we will also discuss the norms of ISO 12647, GATF, and Japan Color 2001, thus to analyze the production quality before and after in-mold labeling. Using samples printed by HP Indigo, we found out they show better image quality, while UV printing makes better performances in gray balance and physical characteristics, among them 8Pass setting samples outstood the rest. Two digital presses have pros and cons in color chart contrasts, while they both achieved international standards in dot gain. Colors will differ after in-molding process, therefore color difference, solid ink density, printing contrast, and gray balance will differ. Almost none of their dot gain could archive international standard during this in-molding process.