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Journal articles
Pulping and Papermaking Properties of Managed Second-Growth
Pulping and Papermaking Properties of Managed Second-Growth Softwoods, 1995 Pulping Conference Proceedings
Journal articles
Editor's Notes: Ready for a Test Drive, TAPPI JOURNAL, Novem
Editor's Notes: Ready for a Test Drive, TAPPI JOURNAL, November, 2006
Journal articles
Optimization of optical coverage of board surfaces with assessment of light scattering and absorption using mineral as a coating component, TAPPI Journal June 2026
ABSTRACT: One of the primary functions of mineral inclusion into paper or paperboard is to improve the optical performance of the substrate. A coating may be applied to a sheet in order to cover a dark base, to improve the sheet opacity, to give the correct smoothness and gloss, or to give a suitable surface on which to print. The brightness of a pigment has long been used as a guide for pigment choice in paper and board. However, the measured paper brightness is a function of color and light absorption (K) of the coating and base and the light scattering (S) within the sheet resulting from interfaces with different refractive index. The optical performance can be quantified by measuring the S&K coefficients as described by the Kubelka-Munk model/theory in a filled or coated paper sheet. In coating, this is often assessed as a function of coat weight, and the corresponding physical sheet properties are assessed at the same time; for example, the correct gloss, smoothness, point-to-point uniformity, and printability. The optical performance in the sheet is often not directly related to the pigment brightness, but is largely a function of the particle packing within the sheet and coating layer. In the first and second main sections of this work, respectively, we show how S&K calculations from the Kubelka- Munk equations can be used in coated sheets to determine the optical performance and how this can be used as a predictive tool for the final sheet performance. This is presented for base sheets with different starting brightness. The third section of this work focuses on how mineral combinations in coatings can be used to improve the light scattering and consequently the optical performance of the board. We include theoretical considerations and then finally share a case study for improvement on the optical properties of recycled board.
Journal articles
A Low-Temperature, Black Liquor Gasifier Model for Use in WinGEMS, TAPPI JOURNAL, February 2006, Vol. 5(2) (242 KB)
A Low-Temperature, Black Liquor Gasifier Model for Use in WinGEMS, TAPPI JOURNAL, February 2006, Vol. 5(2) (242 KB)
Journal articles
Best Management Practices for Pulp Mills: Part 2 - What?, Frontline Focus, Volume 2, Issue 6
Frontline Focus, June 2006
Journal articles
Bleaching 101: The Basics, Frontline Focus, Volume 2, Issue 7
Frontline Focus, July 2006
Journal articles
A ghost in the machine, Frontline Focus, Volume 2, Issue 8
Frontline Focus, August 2006
Journal articles
Problem Solving - As easy as Pie!, Frontline Focus, Volume 2, Issue 10
Frontline Focus, October 2006
Journal articles
Do Recovery Boilers Still Explode? Frontline Focus, Volume 2, Issue 11
Frontline Focus, November 2006
Journal articles
Pins And Fines: a Small Cause of Big Losses, Frontline Focus, Volume 2, Issue 12
Frontline Focus, December 2006