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Journal articles
Open Access
Deinking of newspaper assisted by steam explosion, TAPPI JOURNAL, December 2000, Vol. 83(12)

Deinking of newspaper assisted by steam explosion, TAPPI JOURNAL, December 2000, Vol. 83(12)

Journal articles
Subscription Access
Energy marketing offered as new cost-control option, TAPPI JOURNAL, January 1998, Vol. 81(1)

Energy marketing offered as new cost-control option, TAPPI JOURNAL, January 1998, Vol. 81(1)

Journal articles
Subscription Access
Industry characteristics and investment decisions: an alternative approach to pulp and paper production, TAPPI JOURNAL, January 1998, Vol. 81(1)

Industry characteristics and investment decisions: an alternative approach to pulp and paper production, TAPPI JOURNAL, January 1998, Vol. 81(1)

Journal articles
Subscription Access
On management: Does the pulp and paper industry have to lose the race?, TAPPI JOURNAL, January 1998, Vol. 81(1)

On management: does the pulp and paper industry have to lose the race?, TAPPI JOURNAL, January 1998, Vol. 81(1)

Journal articles
Subscription Access
Third-party financing of pulp and paper mill steam, power, and utility sssets, TAPPI JOURNAL, January 1998, Vol. 81(1)

Third-party financing of pulp and paper mill steam, power, and utility sssets, TAPPI JOURNAL, January 1998, Vol. 81(1)

Journal articles
Open Access
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
Open Access
Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Journal articles
Open Access
A review of gas flows in fiber suspensions, TAPPI JOURNAL, Online Exclusive, November 2003, Vol. 2(11) (775KB)

A review of gas flows in fiber suspensions, TAPPI JOURNAL, Online Exclusive, November 2003, Vol. 2(11) (775KB)

Journal articles
Open Access
Comparative annual cost efficiency between thermal and chemical oxidation of TRS in kraft mills, TAPPI JOURNAL, July 2005, Vol. 4(7) (200 KB)

Comparative annual cost efficiency between thermal and chemical oxidation of TRS in kraft mills, TAPPI JOURNAL, July 2005, Vol. 4(7) (200 KB)

Journal articles
Open Access
Linking Pulp Variations to TMP Operation by Better Selection

Linking Pulp Variations to TMP Operation by Better Selection and Treatment of Process Data

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