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Determination of Sulfate Ions in Kraft Black Liquors by a Turbidity Method, 2006 Engineering, Pulping, & Environmental Conference
Determination of Sulfate Ions in Kraft Black Liquors by a Turbidity Method, 2006 Engineering, Pulping, & Environmental Conference
Formaldehyde Abatement of Particleboard Sustrate with Several Scavenger Resins, 1996 Plastic Laminates Symposium Proceedings
Formaldehyde Abatement of Particleboard Sustrate with Several Scavenger Resins, 1996 Plastic Laminates Symposium Proceedings
Webinars
Data-Driven Decision Making with Process Analytics - Making sense of big data in the pulp and paper industry
Data-Driven Decision Making with Process Analytics - Making sense of big data in the pulp and paper industry This webinar aims to establish best practices for data-driven decision-making in the pulp
Filtration efficiency and breathability of selected face masks, TAPPI Journal September 2023
ABSTRACT: Face masks have been used as physical barriers to stop respiratory infections for many years. Due to insufficient and low supply of certified masks, alternative face covers such as face shields, neck gaiters, and fabric reusable masks gained attention during the COVID-19 pandemic. However, for these alternate face masks to fulfill their intended function, they must be effective. Additionally, the level of breathability provided by the makeshift masks must be at a certain level. The work reported in this paper was carried out to determine the relationship between filtration efficiency (FE), breathability, and important physical characteristics of mask substrates. The fiber diameter of the core filter layer was determined using a scanning electron microscope. Five types of face masks (two types of N95, two types of surgical masks, and a 100% knitted cotton fabric) were tested for their FE and breathability using moisture vapor transmission rate (MVTR). The cotton knitted mask had the lowest FE (5.10%•26.47%), while the National Institute for Occupational Safety and Health (NIOSH)-certified N95 mask had the highest FE values (92.10%•99.65%). However, the cotton mask outperformed the N95 in terms of the pressure drop, meaning higher comfort. In general, the N95 face mask provided the best protection against aerosolized particles. According to the regression analysis, the fiber diameter of the mask filter substrate serves as an important predictor of FE of mask substrates. In this study, it was confirmed that fiber diameter is inversely related to the filtration ability. Results show that compact structure with finer fibers will enable higher filtration efficiency. The study lends itself to developing layered face masks to obtain optimum filters with good filtration, better fit, and acceptable comfort for the wearer.
Corrugated Packaging
The division is comprised of technical professionals who focus on the manufacture and use of corrugated containers and associated packaging materials and products.
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Treatment of Non-Wood Black Liquors by Electrolysis and Lignin Precipitation, 2005 Engineering, Pulping & Environmental Conference
Treatment of Non-Wood Black Liquors by Electrolysis and Lignin Precipitation, 2005 Engineering, Pulping & Environmental Conference
Sorption of Organics by Pulp-Derived Solids, 1993 Environmental Conference Proceedings
Sorption of Organics by Pulp-Derived Solids, 1993 Environmental Conference Proceedings
Dryer Sleeve Bearing Lubrication System Reduces Failures, Improves Safety, 1996 Engineering Conference Proceedings
Dryer Sleeve Bearing Lubrication System Reduces Failures, Improves Safety, 1996 Engineering Conference Proceedings