Dewatering of foam-laid and water-laid structures and the formed web properties

J Lehmonen, E Retulainen, J Paltakari… - Cellulose, 2020 - Springer
The use of aqueous foams as a carrier fluid for pulp fibers instead of water has re-emerged
in the paper and board industry in recent years. In foam forming, a surfactant is needed to …

The effect of in-line foam generation on foam quality and sheet formation in foam forming

A Koponen, A Jäsberg, T Lappalainen… - Nordic Pulp & Paper …, 2018 - degruyter.com
Foam forming has recently attracted increasing interest due to the paper industry's continual
efforts to find new possibilities to minimize raw material consumption, and to improve energy …

Dispersion of 24-mm staple fibers with foam

J Asikainen, E Saharinen… - Journal of Engineered …, 2020 - journals.sagepub.com
In addition to carding and airlaid processes, nonwovens are produced from staple fibers by
a wet-laid process. A drawback of this process is the necessity to use very dilute fiber …

The flow resistance of fiber sheet during initial dewatering

A Koponen, S Haavisto, J Liukkonen… - Drying Technology, 2016 - Taylor & Francis
In this work, a novel experimental filtration device with pressure profiling was used for
analyzing water removal from the fiber network in the forming section of a paper machine …

Surface and inter-fibre interactions in aqueous cellulose-based systems for open fibrous structures

A Ketola - 2023 - aaltodoc.aalto.fi
In the thesis, the morphology of cellulose-based fibre surfaces immersed in water and their
interactions with air bubbles in the presence of surfactants were investigated. The cellulose …

[HTML][HTML] Generation of aqueous foams and fiber foams in a stirred tank

J Kouko, B Prakash, VM Luukkainen, A Jäsberg… - … Research and Design, 2021 - Elsevier
Generation of fiber foams with surface aeration was studied by simultaneous mixing of pulp
fibers, surfactant, air and water in a lab-scale tank. The mixing took place in either transient …

Dynamic generation of aqueous foams and fiber foams in a mixing tank

B Prakash, J Kouko, VM Luukkainen, A Jäsberg… - SN Applied …, 2021 - Springer
Mixing tanks are employed in paper and pulp industries to generate aqueous foams and
fiber foams. The aim of the present study was to investigate the effect of impeller geometry …

[HTML][HTML] Effects of pulp type and stock concentration on foamability and bubble size of fiber foam

M Park, S Oh, C Ahn, MJ Park, BU Cho - Journal of Korea TAPPI, 2020 - ktappi.kr
Effects of pulp type and pulp concentration on foamability and bubble size of fiber foam were
investigated as fundamental research to develop foam forming technology. Two types of …

[PDF][PDF] Process simulation-based evaluation of design and operational implications of water-laid paper machine conversion to foam technology

L Sorsamäki, A Koponen, E Hytönen - BioResources, 2021 - academia.edu
Foam forming technology has attracted much attention during the past few years in the
paper industry. Its advantages compared to conventional water forming are a new product …

[PDF][PDF] Foam-laid forming technology for fiber webs

J Lehmonen - 2022 - aaltodoc.aalto.fi
The forest industry is in the midst of a structural change. The goal is to renew the paper and
board industry to produce higher value-added products for future markets. The launch of …