Textile-Like Materials with Foam Forming on a Paper Machine, 19PaperCon
A novel type of paper material was produced in pilot scale with the objective to explore whether paper with textile like characteristics can be produced on a paper machine. To obtain a textile like feel, a large fraction of long synthetic fibres was included in a softwood kraft furnish. To avoid excessive flocculation, the sheet was formed from a bubbly dispersion (‘foam forming’). The result was a soft sheet (in terms of Emtec TS7) with comparatively high strength. The synthetic fibres were only available in limited supply. To keep the amount of required raw material to a minimum, a production methodology was developed in which the synthetic fibres were only injected intermittently into the pulp flow. By proactively adjusting the surfactant addition, the surface tension and the forming process could be maintained stable during the sudden changes in the fibre feed flows. The successful implementation of this kind of ‘pulsed production’ suggests that it could be employed more generally in situations where only limited amounts of product should be produced, e.g. during trial work with expensive raw materials.
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Textile-Like Materials with Foam Forming on a Paper Machine, 19PaperCon
