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Open Access
Lignin-based resins for kraft paper applications, TAPPI Journal November 2019

ABSTRACT: We investigated miscanthus (MS) and willow (W) lignin-furfural based resins as potential reinforce-ment agents on softwood and hardwood kraft paper. These resins might be sustainable alternatives to the commercial phenolformaldehyde (PF) resins. Phenol is a petrochemical product and formaldehyde has been classified as a carcinogen by the U.S. Environmental Protection Agency. The lignin used in this study was derived from hot water extraction (160ºC, 2 h) of MS and W biomass, and may be considered sulfur-free. These biorefinery lignins were characterized for their chemical composition and inherent properties via wet chemistry and instrumental techniques. The resin blends (MS-resin and W-resin) were characterized for their molecular weight, thermal behavior, and mechanical properties. Mechanical properties were measured by the resin’s ability to reinforce softwood and hard-wood kraft papers. The effect of adding hexamethylenetetramine (HMTA), a curing agent, to the resin was also examined. Mixtures of PF and lignin-based resins were investigated to further explore ways to reduce use of non-renewables, phenol, and carcinogenic formaldehyde. The results show that lignin-based resins have the potential to replace PF resins in kraft paper applications. For softwood paper, the highest strength was achieved using W-resin, without HMTA (2.5 times greater than PF with HMTA). For hardwood paper, MS-resin with HMTA gave the highest strength (2.3 times higher than PF with HMTA). The lignin-based resins, without HMTA, also yielded mechanical properties comparable to PF with HMTA.

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Open Access
Creating adaptive predictions for packaging-critical quality parameters using advanced analytics and machine learning, TAPPI Journal November 2019

ABSTRACT: Packaging manufacturers are challenged to achieve consistent strength targets and maximize pro-duction while reducing costs through smarter fiber utilization, chemical optimization, energy reduction, and more. With innovative instrumentation readily accessible, mills are collecting vast amounts of data that provide them with ever increasing visibility into their processes. Turning this visibility into actionable insight is key to successfully exceeding customer expectations and reducing costs. Predictive analytics supported by machine learning can provide real-time quality measures that remain robust and accurate in the face of changing machine conditions. These adaptive quality “soft sensors” allow for more informed, on-the-fly process changes; fast change detection; and process control optimization without requiring periodic model tuning.The use of predictive modeling in the paper industry has increased in recent years; however, little attention has been given to packaging finished quality. The use of machine learning to maintain prediction relevancy under ever-changing machine conditions is novel. In this paper, we demonstrate the process of establishing real-time, adaptive quality predictions in an industry focused on reel-to-reel quality control, and we discuss the value created through the availability and use of real-time critical quality.

Journal articles
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Open Access
Editorial: Professional Networking in the Nonwovens and Technical Textiles Sector

Editorial: Professional Networking in the Nonwovens and Technical Textiles Sector, TAPPI Journal, May 2017

Journal articles
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Open Access
Combustion behaviors of lignin-lean black liquor and lignin, TAPPI JOURNAL July 2015

Combustion behaviors of lignin-lean black liquor and lignin, TAPPI JOURNAL July 2015

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Open Access
Causality of manufacturing processes with significant time

Causality of manufacturing processes with significant time delays, TAPPI JOURNAL November 2015

Journal articles
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Open Access
Desilication of bamboo for pulp production, TAPPI JOURNAL N

Desilication of bamboo for pulp production, TAPPI JOURNAL November 2015

Journal articles
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Open Access
Editorial: Marc Foulger: All things papermaking, TAPPI JOUR

Editorial: Marc Foulger: All things papermaking, TAPPI JOURNAL November 2015

Magazine articles
Open Access
Editorial: Scott Rosencrance: Technical innovator, TAPPI JOU

Editorial: Scott Rosencrance: Technical innovator, TAPPI JOURNAL January 2013

Journal articles
Magazine articles
Open Access
Guest Editorial: Paper and bioprocess engineering at SUNY-ES

Guest Editorial: Paper and bioprocess engineering at SUNY-ESF, TAPPI JOURNAL January 2012

Journal articles
Magazine articles
Open Access
Guest Editorial: J.Y. Zhu: Adapting and transforming the ind

Guest Editorial: J.Y. Zhu: Adapting and transforming the industry, TAPPI JOURNAL July 2012

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