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Human Performance and Risk Reduction, Paper360º May/June 2018

Human Performance and Risk Reduction, Paper360º May/June 2018

Employee Behavior Confusing? Asking This Helps, November/December 2023 Paper360º

He’s Got the Pulp: Schalka Sets Record as LA CEO of the Year, Paper360º September/October 2019

He’s Got the Pulp: Schalka Sets Record as LA CEO of the Year, Paper360º September/October 2019

Practical Strategies to Reduce Pulp and Paper Mill Energy Use, Paper360º July/August 2018

Practical Strategies to Reduce Pulp and Paper Mill Energy Use, Paper360º July/August 2018

Achieving Progressive Quality Culture Through Analytical Problem Solving, Paper360º March/April 2021

Achieving Progressive Quality Culture Through Analytical Problem Solving, Paper360º March/April 2021

PPI Awards Finalists for 2016, Paper360º November/December 2

PPI Awards Finalists for 2016, Paper360º November/December 2016

Bridging the Talent Gap, Paper360º November/December 2018

Bridging the Talent Gap, Paper360º November/December 2018

What is Our Industry’s Most Critical Workforce Need?, Paper360º March/April 2021

What is Our Industry’s Most Critical Workforce Need?, Paper360º March/April 2021

Surface energy considerations for offset printing of coated paper and paperboard, TAPPI Journal November 2023

ABSTRACT: Offset printing of coated paper involves the complex interactions of ink with a surface that is characterized by three major properties: roughness, porosity, and related pore network structure and surface chemistry (related to surface free energy [SFE]). The effects of porosity and roughness are relatively well understood and are documented in the literature, whereas the influence of surface chemistry is much less studied and therefore the focus of this paper. The key results shown include: i) Coating porosity has a negligible effect on SFE determination by contact angle using two fluids. ii) The chemistry of the latex polymer in the coating formulation dominates the influence on SFE compared to pigment, with any surface energy differences present in the pigment being almost completely masked by latex. iii) Wetting agent and corona treatment can impact water absorption rate and surface spreading of water, resulting in small differences in printability. Increasing the concentration of the surfactant on a coated surface indicates switching orientation of the surfactant molecules, giving a “step wise” printing result. When looking to improve offset printability by selection of different pigments, the variation in SFE is less important than variation in either surface roughness or porosity.

Kotkamills’ PM1 Rebuild Will Reinforce its Position in Laminated Papers, Paper360º September/October 2022