When Optimizing Paper Print Performance, Minerals Matter
Mueller, K., Osterhuber, E., Donigian, D; Pulp & Paper, April, 2006, p. 39-43
Topic: Today's high performance printing papers consume increasing quantities of mineral pigments. For optimal print, optical and economic reasons, precipitated calcium carbonate is a cost effective method for obtaining improved paper properties.
Effect of Sheet Moisture and Calender Pressure on PCC and GCC Coated Papers
Dimmick, A; 2006 Tappi Coating and Papermakers Conference, April 24-27, 2006, Atlanta, Georgia
Topic: Coating PCC's with narrow particle-sized distribution produce high micro-smoothness even in the absence of calendaring. The ability of the PCC to maintain the coating structure during immobilization combined with the improved micro-smoothness results in a lesser need for calendaring compared to other pigments such as GCC or clay.
Ink Setting Mechanism for Use on High Performance Papers
Donigian, D.; GAFTWorld, v.17, no.3, p 18-20,22, June 2005
Topic: Today's coated papers are made using synthesized narrow particle size distribution PCC coatings. The porosity advantage of these minerals affect offset ink-setting rates. These minerals provide chemical purity, bulk, light scattering, smoothness, opacity, and gloss.
PCC Has Coating in its Sights
Pelto, M.; Pulp & Paper International, May, 2005, p. 21-23
Topic: PCC is proving to be a cost effective coating additive with improved optical properties.
The Relationship Between Ink Setting Rates, Backtrap Piling, and Micropicking
Donigian, D, Vyörykka, J., Xiang, Y., Bousfield, D.; 2004 Tappi Coating Conference, May 16-19, 2004, Baltimore, MD
Topic: Printing back trap mottle patterns can occur due to a micro-picking type mechanism. Narrow distribution precipitated calcium carbonates can increase ink setting rates and suppress backtrap micro-picking.
Structure Giving Calcium Carbonates and the Influence of Coating Color Solids on Paper Performance
Kröber,M., Dimmick, A., Aarni, E., Alderfer, G.; 2003 PTS Coating Symposium, Baden-Baden, Germany, Sept 16-19, 2003
Topic: Study indicates that there are no appreciable effects of the dilution of coating colors on optical coated paper performance when using high levels of precipitated calcium carbonate or ground calcium carbonate coating colors. The coated paper properties remain consistent over a 4%-units solids decrease. Thus, narrow particle sized pigments like PCC can give enhanced coated sheet performance even when used at lower coating solids.
Influence of the Average Particle Size of Aragonitic Precipitated Calcium Carbonate on Coated Paper Properties
Dimmick, A.; 2003 Tappi Spring technical Conference, Chicago, IL May 12, 2003
Topic: Experiments confirm that an optimal particle size range for aragonite PCC exists to achieve peak opacity. Optimal particle size (0.4-0.55 um) is equivalent to that predicted by Zeller.
Precipitated Calcium Carbonate for Coated Papers
Osterhuber, E. J; 35th Annual Pulp & Paper Congress & Exposition, Sao Paulo, Brazil, October 15, 2002
Topic: Discusses the properties of precipitated calcium carbonate and their influence on coated papers.
Calendering Thermal and Moisture Effects on LWC Paper with Precipitated Calcium Carbonate Coating Applied by Metered Size Press
Linnonmaa, P., Todorovic, A., Roman, N., Donigian, D., Ma, D.; 2002 Metered Size Press Forum, p 105-114
Topic: The effects of calendering roll temperature, calender line load, and paper moisture on finished properties of precipitated calcium carbonate coated papers were studied at pilot scale.
Ink-Jet Dye Fixation and Coating Pigments
Donigian, D., Wernett, P., McFadden, M., McKay, J.; 1998 Tappi Coating & Papermakers Conference Proceedings, p 393-412
Topic: The fixation of commercial ink jet inks using thin layer chromatography. Silica based coating pigments and precipitated calcium carbonate pigments fix ink jet dyes by different mechanisms.
Precipitated Calcium Carbonate for Paper
Ishley, J. N., Osterhuber, E. J.; Coating Materials: Pigments, Binders and Additives, Tappi Notes, 40 pp, 1998
Topic: The synthesis routes and performance characteristics of PCC in paper coating (purity, particle size, concentration) are described and compared with ground calcium carbonate (GCC) properties.
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Effect of Particle Size Distribution on the Structure and Optical Properties of Calcium Carbonate-Containing Coatings
Osterhuber, E. J., McFadden, M. G., Roman, N.; International Paper & Coating Chemistry Symposium Proceedings, p 47-55, 1996
Topic: The narrow particle size distribution of PCC tends to "open" a sheet coating providing a less densely-packed coating structure with greater pore volume than a comparatively wide distribution particle like ground calcium carbonate (GCC). The high volume of large diameter pores from PCC results in an increase in coating light scatter and opacity.
