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Journal articles
Magazine articles
Forests in Your Pocket, Paper360º November/December 2021

Forests in Your Pocket, Paper360º November/December 2021

Journal articles
Magazine articles
Getting Color ´In Line’, Paper360º November/December 2021

Getting Color ´In Line’, Paper360º November/December 2021

Journal articles
Magazine articles
Leadership in Maintenance: Wastefulness, Paper360º November/December 2021

Leadership in Maintenance: Wastefulness, Paper360º November/December 2021

Journal articles
Magazine articles
Carbon Costs are Coming: How Might They Impact Your Business?, Paper360º November/December 2021

Carbon Costs are Coming: How Might They Impact Your Business?, Paper360º November/December 2021

Journal articles
Magazine articles
ASPI News, Paper360º November/December 2021

ASPI News, Paper360º November/December 2021

Journal articles
Magazine articles
TAPPI News, Paper360º September/October 2021

TAPPI News, Paper360º September/October 2021

Journal articles
Magazine articles
ASPI News, Paper360º September/October 2021

ASPI News, Paper360º September/October 2021

Journal articles
Magazine articles
SetPoint: Nice to Meet You in Challenging Times, Tissue360º Spring/Summer 2021

SetPoint: Nice to Meet You in Challenging Times, Tissue360º Spring/Summer 2021

Journal articles
Magazine articles
Open Access
Web lateral instability caused by nonuniform paper properties, TAPPI Journal January 2022

ABSTRACT: Lateral or cross-machine direction (CD) web movement in printing or converting can cause problems such as misregistration, wrinkles, breaks, and folder issues. The role of paper properties in this problem was studied by measuring lateral web positions on commercial printing presses and on a pilot-scale roll testing facility (RTF). The findings clearly showed that CD profiles of machine direction (MD) tension were a key factor in web stability. Uneven tension profiles cause the web to move towards the low-tension side. Although extremely nonuniform tension profiles are visible as bagginess, more often, tension profiles must be detected by precision devices such as the RTF. Once detected, the profiles may be analyzed to determine the cause of web offset and weaving problems.Causes of tension profiles can originate from nonuniform paper properties. For example, by means of case studies, we show that an uneven moisture profile entering the dryer section can lead to a nonuniform tension profile and lateral web movement. Time-varying changes in basis weight or stiffness may also lead to oscillations in the web’s lateral position. These problems were corrected by identifying the root cause and making appropriate changes. In addition, we developed a mathematical model of lateral stability that explains the underlying mechanisms and can be used to understand and correct causes of lateral web instability.

Journal articles
Magazine articles
Open Access
Microbial load and proliferation associated with various face mask types and sources during the COVID-19 pandemic, TAPPI Journal January 2022

ABSTRACT: Due to the shortage of personal protective equipment during the COVID-19 pandemic, homemade face coverings were recommended as alternatives. However, the capability of alternative face coverings to proliferate microbes have not been fully documented. The current study evaluated bacterial load and proliferation associated with the use of common face masks during the COVID-19 pandemic. Mask type-specific and surface-related bacterial load and pattern were noticeable in the study. Results indicated that roadside masks are among samples that contained relatively higher initial bacterial load. The highest number of bacterial forming colonies were observed in the inner surface of mask samples. Proliferation of microbes over time was also noticeable among the non-certified face coverings included in the study. Sterilization or washing of non-certified fabric face masks before use is recommended.

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