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TAPPI Journal Summaries, Paper360º May/June 2020

TAPPI Journal Summaries, Paper360º May/June 2020

How Strikes, Regulations and Disasters Impact Pulp and Paper Supply Chains, Paper360º May/June 2020

How Strikes, Regulations and Disasters Impact Pulp and Paper Supply Chains, Paper360º May/June 2020

Human Capital: The New Metric to Measure, Paper360º May/June 2020

Human Capital: The New Metric to Measure, Paper360º May/June 2020

Stiffness and strength properties of five paperboards and their moisture dependency, TAPPI Journal February 2020

ABSTRACT: Five commercial multiply folding boxboards made on the same paperboard machine have been analyzed. The paperboards were from the same product series but had different grammage (235, 255, 270, 315, 340 g/m2) and different bending stiffness. The paperboards are normally used to make packages, and because the bending stiffness and grammage varies, the performance of the packages will differ. Finite element simulations can be used to predict these differences, but for this to occur, the stiffness and strength properties need to be deter-mined. For efficient determination of the three-dimensional properties in the machine direction (MD), cross direction (CD), and Z direction (ZD), it is proposed that the paperboard should be characterized using in-plane tension, ZD-tension, shear strength profiles, and two-point bending. The proposed setups have been used to determine stiff-ness and strength properties at different relative humidity (20,% 50%, 70%, and 90% RH), and the mechanical proper-ties have been evaluated as a function of moisture ratio.There was a linear relation between mechanical properties and moisture ratio for each paperboard. When the data was normalized with respect to the standard climate (50% RH) and plotted as a function of moisture ratio, it was shown that the normalized mechanical properties for all paperboards coincided along one single line and could therefore be expressed as a linear function of moisture ratio and two constants.Consequently, it is possible to obtain the mechanical properties of a paperboard by knowing the structural properties for the preferred level of RH and the mechanical property for the standard climate (50% RH and 23°C).

Paper Mill HMI Displays Benefit from Integrated KVM Extenders, November/December 2023 Paper360º

Wood Market Dynamics and the Impact on Pulp and Paper: Current Trends, November/December 2023 Paper360º

Extending the Cycle Life of an Industrial Battery: What Makes a Battery Last?, Paper360º March/April 2024

Preventive and Predictive Conveyor Maintenance, Paper360º May/June 2024

Paper Mills Forge Ahead with Complex Forged Parts, Paper360º May/June 2024

Summaries from TAPPI Journal, Paper360º May/June 2024