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Conference papers
Boosting the elongation potential of paper by mechanical refining and additives, 18PaperCon
Boosting the elongation potential of paper by mechanical refining and additives, 18PaperCon
Training Resources
Training Resources Attendance Support Materials We understand it can be challenging to ask for approval to attend TAPPI training events, so we've created an Attendance Support Materials below to
Journal articles
Andritz to Supply Two Production Lines to Koro Viet Nam
New lines will be supplied to support the company’s entry into the tissue market
Journal articles
Harris American Announces Acquisition of G.P.S.
Harris American Company, a subsidiary of Avis Industrial Corporation, is pleased to announce it has completed the acquisition of G.P.S. S.r.l., Ferrara, Italy. Founded by Marco Garuti in 2013, G.P.S. is a renowned manufacturer of ferrous and non-ferrous scrap processing balers and shears recognized for innovative design, high efficiency throughput, and the flexibility of stationary and mobile equipment applications.
Journal articles
CCCA Launches Redesigned Website Highlighting Corrugated Packaging’s Role in Canada’s Supply Chains
Virtually every product, from farms or factory floors to DCs, stores or front doors, passes through a box at some point along its journey. Today, the Canadian Corrugated and Containerboard Association (CCCA) launches its redesigned website, offering a window into a sector quietly supporting the movement of goods, powering domestic supply chains, and advancing a sustainable, circular economy.
Journal articles
How UFP Packaging and SUN Automation Are Raising the Bar in Corrugated
UFP Packaging is on an ambitious path to scale its corrugated division. But growth alone isn’t the endgame - the company is rethinking what automation, efficiency, and customer experience look like in the modern box plant.
Journal articles
Ahlstrom Advances Transition to Renewable Gas in Italy with Multiyear Biomethane Agreements
Ahlstrom, a global leader in fiber-based specialty materials, has signed multiyear biomethane supply agreements with two energy producers, reinforcing its commitment to decarbonizing industrial energy use. The agreements, representing one of the largest volume signed in Italy to date directly with producers, cover seven biomethane production plants and enable a partial substitution of fossil natural gas with renewable biomethane.
Journal articles
Metsä Group Inaugurates the World’s Most Modern Tissue Mill in Mariestad
Metsä Group marked the inauguration of its expanded and modernized tissue paper mill in Mariestad, Sweden, on 26 May. The opening ceremony was conducted by external representatives together with Metsä Group and Metsä Tissue leadership.
Journal articles
Non-process elements in the lime cycle: New findings regarding NPE distribution and lime mud filterability, TAPPI Journal July 2026
ABSTRACT: Proper functioning of the recausticizing cycle is crucial for securing a stable white liquor supply for a pulp mill. Common runnability problems in the modern lime cycle, such as low filterability and poor dewatering of lime mud, high dead load, or ring formation in the lime kiln, are often caused by accumulation of non-process elements (NPEs). This project attempted to verify the traditional rules of thumb regarding the chemical behavior of NPEs: magnesium (Mg), aluminum (Al), silicon (Si), phosphorus (P), zinc (Zn), manganese (Mn), iron (Fe), copper (Cu), barium (Ba), cadmium (Cd), and lead (Pb) in the causticizing reaction, and to investigate the reasons behind poor lime mud filterability. First, a standardized method for measuring filterability of lime mud was developed. Next, a series of recausticizing experiments, followed by immediate filtration trials, was conducted using mill green liquors, laboratory-made synthetic green liquor, reburned lime/makeup mix, and extra NPE additions. It was found that sodium (Na), potassium (K), and sulfur (S) followed the liquid phase, as expected, while Mg, P, and Ba, but also Pb, Cu, and Cd, showed low solubility and accumulated in the lime mud. The Si and Al accumulated in the lime mud even though the soluble content in liquor was high, while the behavior of Mn, Fe, and Zn was more complex. Based on these results, tentative solubility limits for NPEs were suggested as a first estimate for the maximum possible concentrations of NPEs in mill white liquor. The causticization-filtration experiments revealed that overliming and high content of Mg in green liquor clearly led to lower filterability, but our addition of Si did not have such an effect. As differences in particle size and size distribution have a certain impact on the filtration resistance, the lime mud sedimentation behavior, combined with other characterization methods, might be used as an indication for the filterability. Finally, a list of recommendations for pulp mills was formulated that starts with establishing a comprehensive standard for a lime mud with good filterability. This standard can be used as a benchmark for comparison any time a lime cycle runnability problem is identified.
Journal articles
Exploratory study on how sub-ply fiber orientation affects t
ABSTRACT: The transition to 100% biobased packaging presents considerable challenges, particularly in the development of a petroleum-free barrier. Generally, biobased barriers exhibit lower flexibility compared to traditional barriers, thereby increasing the risk of cracking during the converting process. The present study examines the possibility of optimizing the substrate to reduce cracking in brittle barriers. Five three-ply composites were fabricated using commercial paperboard to enable a composite with different fiber orientation in the individual plies. The different orientations achieved varying mechanical properties, including strain-atbreak and folding resistance, with a ranking that is comparable to a standard multi-ply paperboard. The composites were subjected to creasing at five distinct depths to assess the area percent of barrier cracks across the crease bead. Micro-cracks appeared on the surface before larger coating cracks were registered. As expected, the area percent of barrier cracks increased significantly with greater creasing depths. The orientation of the bulky middle ply showed little difference in the cracking propensity. However, by replacing the stiffer bottom ply with a ply of lower stiffness, the cracking propensity was significantly reduced without a substantial loss in mechanical properties. Hence, these findings indicate that it is possible to reduce the cracks in the barrier by modifying the fiber orientation in the different plies.