Search
Use the search bar or filters below to find any TAPPI product or publication.
Filters
Content Type
Publications
Level of Knowledge
Committees
Collections
Journal articles
Magazine articles
Guest Editorial: Nonwovens industry responds to COVID-19 challenge, TAPPI Journal October 2020
ABSTRACT: The COVID-19 pandemic caused by the SARS-CoV-2 coronavirus has challenged the whole world to prepare for and respond to a health crisis. While the world had previously focused on addressing challenges such as climate change, income disparity, and peace, this novel coronavirus introduced a new set of challenges not seen in 100 years.
Journal articles
Magazine articles
Investigation of the influencing factors in odor emission from wet-end white water, TAPPI Journal October 2020
ABSTRACT: Emission of malodorous gases, such as volatile organic compounds (VOCs), hydrogen sulfide (H2S), and ammonia (NH3) during pulping and papermaking has caused certain harm to the air environment and human health. This paper investigated the influencing factors of odor emission from wet-end white water during the production of bobbin paper in a papermaking mill using old corrugated containers (OCC) as raw material. The concentration of malodorous gases emitted from wet-end white water was determined with pump-suction gas detectors. The results indicated that low temperature could limit the release of malodorous gases from white water. Specifically, no total volatile organic compounds (TVOC), H2S, and NH3 was detected at a temperature of 15°C. The concentrations of malodorous gases were slightly increased when temperature increased to 25°C. When temperature was 55°C, the released concentrations of TVOC, H2S, and NH3 were 22.3 mg/m3, 5.91 mg/m3, and 2.78 mg/m3, respectively. Therefore, the content of malodorous gases significantly increased with the temperature increase. The stirring of white water accelerated the release of malodorous gases, and the release rate sped up as the stirring speed increased. However, the total amount of malodorous gases released were basically the same as the static state. Furthermore, the higher the concentration of white water, the greater the amount of malodorous gases released. The pH had little influence on the TVOC release, whereas it significantly affected the release of H2S and NH3. With the increase of pH value, the released amount of H2S and NH3 gradually decreased. When pH reached 9.0, the release amount of H2S and NH3 was almost zero, proving that an alkaline condition inhibits the release of H2S and NH3.
Journal articles
Magazine articles
Characterization of chia plant (Salvia hispanica) for pulping, TAPPI Journal October 2020
ABSTRACT: In this paper, chia plant was characterized in terms of chemical, morphological, and anatomical properties. Chia plant was characterized with low a-cellulose (30.5%); moderate lignin (23.2%) with syringyl to guaiacyl ratio of 1.41; and shorter fiber length (0.67 mm) with thinner cell wall (1.91 µm) and good flexibility coefficient (71.44). Anatomical features showed that chia plant consists of vessels, fibers, parenchyma cells, and collenchyma cells. Chia plant pulping was evaluated in soda-anthraquinone (soda-AQ) and formic acid/peroxyformic acid (FA/PFA) processes. Chia plant was difficult to delignify in the alkaline process. The FA/PFA process produced higher pulp yield at the same kappa number than the soda-AQ process. Unbleached soda-AQ chia pulp exhibited good properties in terms of tensile, bursting, and tearing strengths, even at the unrefined stage, due to high drainability of the pulps. Alkaline peroxide bleached FA/PFA pulp exhibited better papermaking properties and 2% higher brightness than the D0(EP)D1 bleached soda-AQ pulp.
Magazine articles
Process safety management and the pulp and paper industry, TAPPI JOURNAL, October 1995, Vol. 78(10)
Process safety management and the pulp and paper industry, TAPPI JOURNAL, October 1995, Vol. 78(10)
Magazine articles
Factors affecting the fabrication of corrosion barriers for rp equipment in bleaching environments, TAPPI JOURNAL, September 1995, Vol. 78(9)
Factors affecting the fabrication of corrosion barriers for rp equipment in bleaching environments, TAPPI JOURNAL, September 1995, Vol. 78(9)
Magazine articles
Anticipated effects of system closure on corrosion in chemical recovery equipment, TAPPI JOURNAL, August 1996, Vol.79(8)
Anticipated effects of system closure on corrosion in chemical recovery equipment, TAPPI JOURNAL, August 1996, Vol.79(8)
Magazine articles
Improved energy efficiency, safety, and emissions in smelt dissolving through smelt Solidification, TAPPI JOURNAL, December 1996, Vol. 79(12)
Improved energy efficiency, safety, and emissions in smelt dissolving through smelt Solidification, TAPPI JOURNAL, December 1996, Vol. 79(12)
Magazine articles
Operations teams run a woodyard, TAPPI JOURNAL, December 1996, Vol. 79(12)
Operations teams run a woodyard, TAPPI JOURNAL, December 1996, Vol. 79(12)
Magazine articles
Mechanism and prevention of localized corrosion of recovery boiler tubes at air ports, TAPPI JOURNAL, February 1996, Vol. 79(2)
Mechanism and prevention of localized corrosion of recovery boiler tubes at air ports, TAPPI JOURNAL, February 1996, Vol. 79(2)
Journal articles
Magazine articles
Review of coating cracking and barrier integrity on paperboard substrates, TAPPI Journal November 2022
ABSTRACT: Barrier packaging formats are major growth areas for the pulp and paper industry. It is technically challenging to maintain barrier properties during converting and end-use applications. Improved manufacturing capabilities and coating formulation knowledge will help maintain barrier integrity and enable growth of barrier products in challenging applications. These improvements will accelerate product development and commercialization, and allow faster response to product performance issues such as cracking. The literature on coating cracking provides knowledge mostly on the effects of coating formulations and to a lesser extent on substrate effects. Despite a large number of publications dedicated to coating failures, the approach to improve coating cracking remains empirical, and the transferability between studies and to real life applications has not been well established. Model development that successfully predicts commercial performance is in its infancy. However, some of these simplified models do a fairly good job predicting experimental data. The current work reviews the state of understanding as regards coating and barrier cracking and highlights the need for more research on cracking and barrier integrity.