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2019 TAPPI/PIMA Awards: Saluting Our Industry Leaders, Paper360 May/June 2019
2019 TAPPI/PIMA Awards: Saluting Our Industry Leaders, Paper360 May/June 2019
Journal articles
Magazine articles
Facing the Market, Paper360 May/June 2019
Facing the Market, Paper360 May/June 2019
Journal articles
Magazine articles
The Shortest Route to Fiber Quality, Paper360 May/June 2019
The Shortest Route to Fiber Quality, Paper360 May/June 2019
Journal articles
Magazine articles
Wood Pulp: The New Cotton for the Garment Industry?, Paper360 May/June 2019
Wood Pulp: The New Cotton for the Garment Industry?, Paper360 May/June 2019
Journal articles
Magazine articles
Meet the 2019 PPI Awards Winners, Paper360 May/June 2019
Meet the 2019 PPI Awards Winners, Paper360 May/June 2019
Journal articles
Magazine articles
Multiple recycling of paperboard: Paperboard characteristics and maximum number of recycling cycles— Part I: Multiple recycling of corrugated base paper, TAPPI Journal November 2019
ABSTRACT: Paper for recycling is an important fiber source for the production of corrugated base paper. The change in production capacity toward more and more packaging papers affects the composition of paper for recy-cling and influences the paper quality. This research project investigated the influence of the multiple recycling of five different corrugated base papers (kraftliner, neutral sulfite semichemical [NSSC] fluting, corrugating medium, testliner 2, and testliner 3) on suspen-sion and strength properties under laboratory conditions. The corrugated board base papers were repulped in a low consistency pulper and processed into Rapid-Köthen laboratory sheets. The sheets were then recycled up to 15 times in the same process. In each cycle, the suspension and the paper properties were recorded. In particular, the focus was on corrugated board-specific parameters, such as short-span compression test, ring crush test, corrugat-ing medium test, and burst. The study results indicate how multiple recycling under laboratory conditions affects fiber and paper properties.
Journal articles
Magazine articles
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.
Journal articles
Magazine articles
Forest Tech Secures Future Fiber, Paper360º November/December 2019
Forest Tech Secures Future Fiber, Paper360º November/December 2019
Journal articles
Magazine articles
IIoT for R&M: The Real Struggle, Paper360º November/December 2019
IIoT for R&M: The Real Struggle, Paper360º November/December 2019
Journal articles
Magazine articles
7 Water Waste Reduction Strategies to Improve Pump Reliability/Black Liquor Processing, Paper360º November/December 2019
7 Water Waste Reduction Strategies to Improve Pump Reliability/Black Liquor Processing, Paper360º November/December 2019