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Improved fibre product properties using foam-based forming process

Hjelt, T (VTT)
Monday 24 February 2014, 14:55-15:15

Seminar Room 1, Newton Institute


In the traditional paper making, foam is found typically to cause problems. However, in the 1970ís foam-laid technology has been demonstrated in a pilot scale based on Radfoam process [1]. Aqueous foam containing small spherical air bubbles is excellent material to transport particles in the dispersed state and this kind of foam is used instead of water as a process fluid and flowing medium in foam-laid technology.

Foam forming is found to improve many product properties including more homogenous mass distribution, reduced density, improved retention of polymers and small particles, and enhanced water removal [2]. In this presentation I will go through these improved properties and using our current knowledge to try to explain why these improvements are obtained in foam forming process.

[1].Kidner T.L.W., The Radfoam process for fine papers, Paper Technology, December 1974. [2].Lehmonen J., Jetsu P, Kinnunen K. and Hjelt T. (2013): Potential of foam-laid forming technology for paper applications, NPPRJ 28(3), 392-398.




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