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Journal articles
The resistance of refiner plate alloys to bar rounding, July 1988, TAPPI Journal 88JUN95
The resistance of refiner plate alloys to bar rounding, TAPPI JOURNAL June 1988
Journal articles
Upgrading wood chips: the Paprifer process, TAPPI JOURNAL March 1988
Upgrading wood chips: the Paprifer process, TAPPI JOURNAL March 1988
Journal articles
Chemical priming for extrusion coating, TAPPI JOURNAL May 1988 88MAY101
Chemical priming for extrusion coating, TAPPI JOURNAL May 1988
Journal articles
The relationship between print mottle and coating structure, TAPPI JOURNAL May 1988 88MAY47
The relationship between print mottle and coating structure, TAPPI JOURNAL May 1988
Journal articles
Mill experience with gate-roll-coated papers, TAPPI JOURNAL May 1988 88MAY53
Mill experience with gate-roll-coated papers, TAPPI JOURNAL May 1988
Journal articles
Applying pilot coater results to mill practice, TAPPI JOURNAL May 1988 88MAY61
Applying pilot coater results to mill practice, TAPPI JOURNAL May 1988
Journal articles
Meeting the needs of the fast-growing, fast-changing pressure-sensitive label industry, TAPPI JOURNAL May 1988 88MAY78
Meeting the needs of the fast-growing, fast-changing pressure-sensitive label industry, TAPPI JOURNAL May 1988
Journal articles
Trim-removal systems, TAPPI JOURNAL May 1988 88MAY87
Trim-removal systems, TAPPI JOURNAL May 1988
Journal articles
On-line layer discrimination of multilayer materials, TAPPI JOURNAL May 1988 88MAY97
On-line layer discrimination of multilayer materials, TAPPI JOURNAL May 1988
Journal articles
A targeted approach to produce energy-efficient packaging materials from high-yield pulp, TAPPI Journal August 2025
ABSTRACT: Unlike fossil-based plastics, wood-based packaging materials can be produced in an ecofriendly manner using wood chip residuals from sawmills and pulpwood. To produce high-yield pulp like chemithermomechanical pulps (CTMPs) for paperboard and liquid packaging, it is crucial to reduce the electric energy consumption during fiber separation. The ultimate objective is to revolutionize paperboard production by achieving a middle-layer CTMP process that consumes less than 200 kilowatt-hours per metric ton (kWh/t), significantly improving from the current 500•600 kWh/t energy demand. Optimizing the CTMP impregnation process of sodium sulfite (Na2SO3) in wood chips is crucial for achieving uniform softening, ideally at the fiber level. The properties of the fibers are significantly affected by the content of lignin sulfonates within the walls of the fiber and the middle lamellae. In this study, we employed in-house developed X-ray fluorescence (XRF) techniques, validated by beamline measurements, to map the distribution of sulfonated lignin within fibers. It also seemed possible to enhance the surface area of lignin-rich pulp fibers while losing minimal bulk by refining them with well-optimized low consistency (LC) refining. We aimed to achieve a highly efficient separation of coniferous wood fibers by co-optimizing the sulfonation and the temperature in the preheater and chip refiner. Additionally, we explored how lignin’s softening behavior and potential crosslinking influence subsequent unit operations, including pressing, peroxide bleaching, and drying, following the defibration process. In defibration during chip refining, the maximum softening of wood fibers is preferred to maximize fiber preservation and minimize energy consumption. However, optimizing the stiffness of finished pulp fibers is preferable to reduce bulk loss during paperboard production. It can strive to optimize processes to develop stronger, lighter, and more sustainable composite packaging materials. Reducing environmental impact and electric energy can help create a more sustainable future.