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Mechanisms Of Print Gloss Development With Controlled Coating Structure, Sung Jai Jeon
Mechanisms Of Print Gloss Development With Controlled Coating Structure, Sung Jai Jeon
Electronic Theses and Dissertations
Paper gloss and print gloss have long been the subject of research because of their strong influence on end-use performance such as image clarity, contrast, and resolution. This work focuses on the significance of the structural factors of porous coatings on print gloss development in a systematic way to elucidate the governing mechanisms. The coating roughness, porosity, and pore size were the three experimental variables. Generation of well defined model coating structures was a challenge and required the appropriate combinations of pigment, binder, and calendering conditions. Calendering techniques with rough substrates (polyester films) were found to produce various rough surfaces …
Application Of Raman Techniques For Paper Coatings, Shivashanker Bitla
Application Of Raman Techniques For Paper Coatings, Shivashanker Bitla
Electronic Theses and Dissertations
Paper coatings are mixtures of pigments, binders and other additives used to improve the optical and printing properties of paper. During application, particle migration may occur resulting in a non-uniform distribution of pigments and binders. This may influence product quality. Raman spectroscopy is a potential tool to characterize coatings in terms of pigment/binder and pigment/pigment distribution. However, there is little work reported on this topic. Various coatings were applied to model substrates, dried and analyzed with Raman spectroscopy. CaC03 pigment and Styrene Butadiene latex binders are easy to detect and monitor in paper coatings when kaolin clays are not …