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Journal articles
The use of ozone as a biocide in paper machine recycled white water, TAPPI JOURNAL, May 2000, Vol. 83(5)
The use of ozone as a biocide in paper machine recycled white water, TAPPI JOURNAL, May 2000, Vol. 83(5)
Journal articles
Fluid transport into porous coating structures: some novel findings, TAPPI JOURNAL, May 2000, Vol. 83(5)
Fluid transport into porous coating structures: some novel findings, TAPPI JOURNAL, May 2000, Vol. 83(5)
Journal articles
The influence of dynamic rheological behavior on final coating properties part 2- dynamic suspension rheology and coating structure consolidation, TAPPI JOURNAL, May 2000, Vol. 83(5)
The influence of dynamic rheological behavior on final coating properties part 2- dynamic suspension rheology and coating structure consolidation, TAPPI JOURNAL, May 2000, Vol. 83(5)
Journal articles
A comparison of primer coating and calcium carbonate addition methods of achieving ldpe coating adhesion to clay-coated board, TAPPI JOURNAL, May 2000, Vol. 83(5)
A comparison of primer coating and calcium carbonate addition methods of achieving ldpe coating adhesion to clay-coated board, TAPPI JOURNAL, May 2000, Vol. 83(5)
Journal articles
Improving centrifugal cleaner efficiency through temperature mismatching, TAPPI JOURNAL, January 2001, Vol. 84(1)
Improving centrifugal cleaner efficiency through temperature mismatching, TAPPI JOURNAL, January 2001, Vol. 84(1)
Journal articles
The effect of converting from 100% OCC to 50% OCC: 50% NSSC on retention and drainage in a closed-cycle paperboard mill, TAPPI JOURNAL, January 2001, Vol. 84(1)
The effect of converting from 100% OCC to 50% OCC: 50% NSSC on retention and drainage in a closed-cycle paperboard mill, TAPPI JOURNAL, January 2001, Vol. 84(1)
Journal articles
Setting the Scene for Environmental Compliance in the Last D
Setting the Scene for Environmental Compliance in the Last Decade of the Twentieth Century, 1990 Nonwovens Conference Proceedings
Journal articles
Exploratory study on how sub-ply fiber orientation affects t
ABSTRACT: The transition to 100% biobased packaging presents considerable challenges, particularly in the development of a petroleum-free barrier. Generally, biobased barriers exhibit lower flexibility compared to traditional barriers, thereby increasing the risk of cracking during the converting process. The present study examines the possibility of optimizing the substrate to reduce cracking in brittle barriers. Five three-ply composites were fabricated using commercial paperboard to enable a composite with different fiber orientation in the individual plies. The different orientations achieved varying mechanical properties, including strain-atbreak and folding resistance, with a ranking that is comparable to a standard multi-ply paperboard. The composites were subjected to creasing at five distinct depths to assess the area percent of barrier cracks across the crease bead. Micro-cracks appeared on the surface before larger coating cracks were registered. As expected, the area percent of barrier cracks increased significantly with greater creasing depths. The orientation of the bulky middle ply showed little difference in the cracking propensity. However, by replacing the stiffer bottom ply with a ply of lower stiffness, the cracking propensity was significantly reduced without a substantial loss in mechanical properties. Hence, these findings indicate that it is possible to reduce the cracks in the barrier by modifying the fiber orientation in the different plies.
Journal articles
Magazine articles
Application of fuzzy TOPSIS in the Analyze phase of the DMAIC cycle to aid decision-making, TAPPI Journal April 2020
ABSTRACT: This paper reports the use of multicriteria analysis in the Analyze phase of the DMAIC (Define-Measure-Analyze-Improve-Control) cycle for continuous improvement. The research was carried out in a tissue paper factory located in southern Brazil. A sample of 64 parts of 16 different reels of recycled paper was used. A problem regarding paper quality variability was detected, presenting a scrap index ranging between 9% and 23%, compromising machine productivity and product sales. This motivated the implementation of a structured project supported by the application of the DMAIC cycle. The project team (machine operators, maintenance staff, supervisor, and data analyst) defined the evaluation criteria and determined the control intervals and their equivalence with linguistic variables to support the necessary evaluations for the application of fuzzy TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution). The criteria were C1-Longitudinal Strength (Kgf), C2-Longitudinal Elongation (mm), C3-Cross-strength (kgf), C4-Cross-elongation (mm), C5-Weight (g/m²), and C6-Humidity (%). The results showed that samples with the same ranking had the lowest scrap indexes in the subsequent process. Also, the criterion C5 had a more significant impact on the quality of the product than the other criteria, which was determined from the DMAIC sequence. Improvements related to C5 should be prioritized. The fuzzy TOPSIS method presented is a flexible tool, adapting itself to the solution of the problem and contributing to the decision-making process.
Journal articles
Magazine articles
Guest Editorial: Still working (overtime): Life-saving nonwovens and continued innovation, TAPPI Journal August 2021
ABSTRACT: Recently, the United States federal government has recommended the need for a booster shot to combat COVID-19, highlighting the highly contagious nature of its Delta variant. This variant is surging in countries as far apart as Thailand, Brazil, and the United States. While the availability of the vaccine is not an issue in the United States, African, Latin American, and South Asian countries are in dire need of the vaccine. This scenario necessitates the need for continued safety measures. Among the recommended safety measures, use of face masks has been proven to be effective. Recent analysis showed that two-thirds of the 32 states in the United States with face mask mandates found them helpful for lowering infection rates.