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Safety is Easy as PI

Safety is Easy as PI

2025 TAPPI Aqueous Barrier Coating for Paper and Paperboard Course

This course provides a solid foundation in the development and application of aqueous-based barrier coatings for paper and paperboard packaging. Through a practical, hands-on approach, participants will gain a clear understandingof the chemistry, application techniques, and performance attributes of these environmentally friendly coatings

Understanding extensibility of paper: Role of fiber elongation and fiber bonding, TAPPI Journal March 2020

ABSTRACT: The tensile tests of individual bleached softwood kraft pulp fibers and sheets, as well as the micro-mechanical simulation of the fiber network, suggest that only a part of the elongation potential of individual fibers is utilized in the elongation of the sheet. The stress-strain curves of two actual individual pulp fibers and one mimicked classic stress-strain behavior of fiber were applied to a micromechanical simulation of random fiber networks. Both the experimental results and the micromechanical simulations indicated that fiber bonding has an important role not only in determining the strength but also the elongation of fiber networks. Additionally, the results indicate that the shape of the stress-strain curve of individual pulp fibers may have a significant influence on the shape of the stress-strain curve of a paper sheet. A large increase in elongation and strength of paper can be reached only by strengthening fiber-fiber bonding, as demonstrated by the experimental handsheets containing starch and cellulose microfibrils and by the micromechanical simulations. The key conclusion related to this investigation was that simulated uniform inter-fiber bond strength does not influence the shape of the stress-strain curve of the fiber network until the bonds fail, whereas the number of bonds has an influence on the activation of the fiber network and on the shape of the whole stress-strain curve.

Characterizing rheological behavior and fluidization of highly refined furnishes, TAPPI Journal April 2024

ABSTRACT: In this work, highly refined softwood bleached kraft pulp (SWBKP) furnishes, referred to here as XFC, were studied from the perspective of fiber suspension handling in processing. The rheology of the furnishes was studied with a rotational rheometer using a non-standard flow geometry to understand the viscosity development at different consistencies and the impact of temperature. For fluidization analysis during pipe flow, two optical methods were implemented; namely, optical coherence tomography (OCT) and high-speed video (HSV) imaging. The OCT was used to determine the small-scale floc structures near the pipe wall where the shear stress is highest, and the HSV imaging was applied for observing flow instabilities and XFC suspension uniformity at the pipe scale. All these issues can be significant in deciding the minimum flow rate required for a process pipe to get sufficient fluidization of XFC suspensions.

Coatings Enabling Plastics to Paper Transformation, TAPPICon25

Applications and Results for Camera Based Solutions for Identifying Safe and Unsafe Work Zones in Paper Mills, TAPPICon25

Pre-Damping Effects on Water Absorption and Drying Dynamics in Flexographic Printing, TAPPICon25

Sweetening and Intermediate Liquor Impacts on Evaporator Performance, TAPPICon25

An Innovative Helical Yankee Hood Design for Improved Profiling, TAPPICon25

Reducing Bias in Process, Operational and Reliability Troubleshooting, TAPPICon25