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Journal articles
Prediction of dust composition and amount in kraft recovery boilers, TAPPI JOURNAL & Solutions! March 2005, Vol. 4(3)
Prediction of dust composition and amount in kraft recovery boilers, TAPPI JOURNAL & Solutions! March 2005, Vol. 4(3)
Journal articles
A useful equation for estimating the surface charge of pulp fibers, TAPPI JOURNAL May 2005, Vol. 4(5)
A useful equation for estimating the surface charge of pulp fibers, TAPPI JOURNAL May 2005, Vol. 4(5)
Journal articles
Predicting droplet size from black liquor spray characteristics, TAPPI JOURNAL May 2005, Vol. 4(5)
Predicting droplet size from black liquor spray characteristics, TAPPI JOURNAL May 2005, Vol. 4(5)
Journal articles
Determination of sheet topography using Shadow Moiré method, TAPPI JOURNAL May 2005, Vol. 4(5)
Determination of sheet topography using Shadow Moiré method, TAPPI JOURNAL May 2005, Vol. 4(5)
Journal articles
Four additional hybrid poplars with papermaking properties superior to aspen, TAPPI JOURNAL, November 2005, Vol. 4(11) (156 KB)
Four additional hybrid poplars with papermaking properties superior to aspen, TAPPI JOURNAL, November 2005, Vol. 4(11) (156 KB)
Journal articles
Production experience with curtain coating for woodfree coated paper, TAPPI JOURNAL, November 2005, Vol. 4(11) (512 KB)
Production experience with curtain coating for woodfree coated paper, TAPPI JOURNAL, November 2005, Vol. 4(11) (512 KB)
Journal articles
Effect of thermal treatment on the structure of PCC particles, TAPPI JOURNAL, November 2005, Vol. 4(11) (352 KB)
Effect of thermal treatment on the structure of PCC particles, TAPPI JOURNAL, November 2005, Vol. 4(11) (352 KB)
Journal articles
Corrugated medium strength assessments in different flute structures, TAPPI Journal April 2026
ABSTRACT: Recent advancements in our ability to evaluate papers and our understanding of the mechanics of box failure have brought a renewed focus on measuring the performance of corrugated medium and an associated evolution of paper measurement approaches. This study evaluates the load curves, Hardness (where the fluted structure’s loading shifts away from an elastic response), and Concora medium crush test (CMT) values for a range of corrugated mediums in different common flute geometries. The shape of the load curve is a function of the geometry of the fluting profile and the relative stiffness of the paper, with smaller flutes and heavier papers reaching both the Hardness value and the ultimate load at lower deformation. Nonetheless, while the specific dynamics during the loading process vary, Hardness and CMT values correlate linearly between flute structures, even when testing specimens after different equilibration periods post-fluting. These correlations confirm the applicability of the standard A-flute CMT test to a broad range of papers and potential combined board flute structures, supporting quality assurance processes for medium production and optimization in corrugated board manufacturing.
Journal articles
Editorial: Advancing barrier science and protective materials: The 2025 winners of TAPPI Journal Best Research Paper Award and Honghi Tran Prize, TAPPI Journal April 2026
At the end of each year, the TAPPI Journal Editorial Board Members nominate papers for consideration as recipient of the Best Research Paper and Honghi Tran Prize from that year, looking for outstanding contributions that push the science and engineering boundaries of fiber-based materials. For 2025, the Board nominated 10 papers and evaluated each nomination in terms of scientific merit, innovation, creativity, and clarity. After voting on the papers earlier this year, the Editorial Board chose two co-winning papers for this distinct honor.
Journal articles
Magazine articles
Effects of different soda loss measurement techniques on brownstock quality, TAPPI Journal July 2024
ABSTRACT: The efficiency of the kraft recovery plant, bleaching process, and paper machine are affected when black liquor carryover from the brownstock washers is not controlled well. Measuring soda loss within a mill can vary from using conductivity, either in-situ or with a lab sample of black liquor filtrate squeezed from the last stage washer, to measuring absolute sodium content with a lab sodium specific ion probe or spectrophotometer. While measuring conductivity has value in tracking trends in black liquor losses, it is not an acceptable method in reporting losses in absolute units, typically in lb/ton of pulp. This is further complicated when trying to benchmark soda loss performance across a fleet of mills with multiple washer lines. Not only do the testing methods vary, but the amount of bound soda on high kappa pulps can be significant. This variability creates inconsistent results, and studies are needed to understand the effect of different testing methods on the pulp quality. In this study, soda loss is expressed as sodium sulfate (Na2SO4). Four different methods to measure soda content in pulp off commercial brownstock washers were studied: full digestion (FD), washing soaking overnight and washing (WSW), soaking in boiling water and stirring 10-min (SW-10), and squeeze-no wash (Sq). Total, washable, and bound sodium sulfate calculations were determined for each soda content measuring technique using inductively coupled plasma-optical emission spectroscopy (ICP-OES). Results showed bound and washable sodium sulfate amounts significantly depend on which soda measurement technique was used. In addition, the soda results were correlated with the pulp kappa numbers. As the kappa number increases, bound soda increases, regardless of the soda measurement method used. Impacts of high sodium sulfate in brownstock are also discussed.