Combined modeling and experimental studies to optimize the balance between foldcrack resistance and bending stiffness for multilayered paper coatings - Part 1: Introduction and modeling studies/Part 2: Experimental studies

Martti Toivakka*, Roger Carlsson, Parvez Alam, Stefan Sandas, Pekka Salminen, Julio Natalense

*Corresponding author for this work

Research output: Contribution to specialist publicationArticle

Abstract

A combined modeling and experimental study was conducted to assess the relationship between foldcrack resistance and bending stiffness in coated papers. Models were developed to calculate bending stiffness, predict the onset of failure, and based on this prediction calculate the residual load carrying capacity of coated paper. The model parameters included the number of coating layers, the individual layer thickness, and the mechanical properties of the coating layers in both tension and compression. The experiment was performed on double and triple coated paper on the pilot coater scale and studied the influence of the parameters, including the binder stiffness, the thickness of coating layer, and the coating strength. An outer coating layer with an increased amount of a medium stiff binder clearly improved foldcrack resistance at similar stiffness. It was also seen that the layer thickness in general has a strong influence, with the thicker layer dominating the results.

Translated title of the contributionCombined modeling and experimental studies to optimize the balance between foldcrack resistance and bending stiffness for multilayered paper coatings - Part 1: Introduction and modeling studies/Part 2: Experimental studies
Original languagePortuguese
Pages40-41
Number of pages2
Volume70
No.11
Specialist publicationO Papel (Brazil)
Publication statusPublished - 1 Nov 2009

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