Author

Woods

Date of Award

12-1999

Degree Name

Master of Science

Department

Chemical and Paper Engineering

Department

Paper Engineering, Chemical Engineering and Imaging

First Advisor

Dr. Thomas Joyce

Second Advisor

Dr. Margaret Joyce

Third Advisor

Dr. Alexandra Pekarovicova

Access Setting

Masters Thesis-Open Access

Abstract

Today's corrugated board end user demands a higher quality than ever. Retailing techniques are moving toward so-called ''value-added packaging," which consists of high quality printed packaging that works to sell the product from the shelf. To preserve'its dominance in the corrugated market, the flexographic printing industry must find new ways to cost effectively satisfy the new demands.

One possibility is the use of an additional calendering step to give the linerboard better printability. This study evaluated two different types of calenders: the shoe (extended nip) calender and the hot/soft nip calender (Appendix A). The test material was commercially produced linerboard, which was on-line gloss calendered.

The objective of this study was to investigate the relationship between the quality of the printed samples and their calendering conditions. The results showed that the linerboard characteristics of water and ink absorption and surface roughness contribute significantly to print quality. The optical properties of delta gloss and print density, and to a lesser extent print mottle and gloss mottle, correlated with the subjective visual ranking of the samples according to print quality.

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