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Magazine articles
The Shendye-Fleming OBA Index for paper and paperboard, TAPPI Journal March 2022
ABSTRACT: We are proposing a new one-dimensional scale to calculate the effects of optical brightening agents (OBA) on the bluish appearance of paper. This index is separate from brightness and whiteness indices.In the paper industry, one-dimensional scales are widely used for determining optical properties of paper and paperboard. Whiteness, tint, brightness, yellowness, and opacity are the most common optical properties of paper and paperboard. Most of the papers have a blue cast generated by addition of OBA or blue dyes. This blue cast is given because of the human perception that bluer is whiter, up to a certain limit. To quantify this effect, it is necessary to determine how much blue cast paper and paperboard have. As the printing industry follows the ISO 3664 Standard for viewing, which has a D50 light source, this also plays a very important role in showing a blue cast. Color perception is based on light source and light reflected from an object. The ultraviolet (UV) component in D50 interacts with OBA to provide a reflection in the blue region of the visible spectrum. Use of a UV blocking filter results in measurements without the effect of emission in the blue region. This difference is used in determining the OBA effect in the visible range of the paper. This equation is known as the Shendye-Fleming OBA Index.
Journal articles
Magazine articles
Considerations in managing wastewater odor at pulp and paper operations, TAPPI Journal March 2022
ABSTRACT: Many pulp and paper mills are, at least periodically, faced with the release of odors that can migrate offsite and be considered a nuisance by nearby residents. At chemical pulp mills, perceptible odors associated with reduced sulfur compounds (RSCs) are common, many of which are highly perceptible owing to their low odor thresholds. As releases of RSCs and other odorous substances from production processes are progressively controlled, the proportional contribution from wastewater treatment systems to areal odors can increase. This review paper summarizes important fundamentals of odor generation, source identification, and control. Common odorous substances are identified, and mechanisms for their generation are summarized. Approaches for measuring odorous substances are detailed to enable more effective management, and various odor control strategies are discussed.
Magazine articles
Editor's Note: Bright future for coating at ACFS, TAPPI JOUR
Editor's Note: Bright future for coating at ACFS, TAPPI JOURNAL November 2010
Magazine articles
Suppliers investing in pilot coater facilities, TAPPI JOURNAL, May 2000, Vol. 83(5)
Suppliers investing in pilot coater facilities, TAPPI JOURNAL, May 2000, Vol. 83(5)
Magazine articles
Cedar river paper co. celebrates success of no. 2 linerboard machine, TAPPI JOURNAL, November 1996, Vol. 79(11)
Cedar river paper co. celebrates success of no. 2 linerboard machine, TAPPI JOURNAL, November 1996, Vol. 79(11)
Magazine articles
Recovery boiler air-port corrosion - part 3: corrosion of composite tubes in molten naoh, TAPPI JOURNAL, September 1995, Vol. 78(9)
Recovery boiler air-port corrosion - part 3: corrosion of composite tubes in molten naoh, TAPPI JOURNAL, September 1995, Vol. 78(9)
Magazine articles
Thermal spray coatings reduce wear and corrosion on calender rolls, TAPPI JOURNAL, October 1995, Vol. 78(10)
Thermal spray coatings reduce wear and corrosion on calender rolls, TAPPI JOURNAL, October 1995, Vol. 78(10)
Magazine articles
Mönsterås going 100% TCF as it increases production and minimizes emissions, December 1995 Tappi Journal [95Dec49.pdf]
Monsteras going 100% tcf as it increases production and minimizes emissions, TAPPI JOURNAL, December 1995, Vol. 78(12)
Magazine articles
Yankee dryer crevice corrosion evaluation, TAPPI JOURNAL, November 1995, Vol. 78(11)
Yankee dryer crevice corrosion evaluation, TAPPI JOURNAL, November 1995, Vol. 78(11)
Magazine articles
Completing the loop: action planning for continuous safety improvement, TAPPI JOURNAL, August 1992, Vol. 75(8)
Completing the loop: action planning for continuous safety improvement, TAPPI JOURNAL, August 1992, Vol. 75(8)
