Influence of Tissue Paper Converting Conditions on Finished Product Softness

António de Oliveira Mendes, Joana Costa Vieira, Ana Margarida Carta, Enrico Galli, Rogério Simões, Manuel José dos Santos Silva, Ana Paula Costa, Paulo Torrão Fiadeiro


Tissue paper conversion consists of the transformation of base tissue papers into finished tissue products to meet specific demands. When base tissue paper arrives at the converting line, it already holds different requirements that were met during its manufacture in the paper machine (e.g., grammage, bulk, tensile index, etc.). However, what happens during converting can still influence the performance and quality of the finished products. The current work addresses this topic and aims to evaluate the influence of converting conditions on the final softness. For that, two 5-ply finished tissue products were analyzed using different methodologies for their proper characterization in terms of softness and surface analysis. The analyzed products are composed by the same base tissue papers, but some changes were applied on their settings in the converting line. In particular, the base tissue papers arrangement and the embossing pressure affected the finished products, resulting in one of them being softer and more pleasant to touch, with a global handfeel (HF) value of 75.3 units, and the other revealed to be rougher and less pleasant, with a global handfeel (HF) value of 68.0 units.


Tissue paper; Converting conditions; Finished product; Softness; Handfeel; Image Analysis

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