Abstract

This paper summarizes recent developments in foam forming that were mainly carried out in pilot scale. In addition to improving the efficiency of existing processes and allowing better uniformity in material, a wide variety of raw materials can be utilized in foam forming. The focus of this paper is thin webs—papers, boards and foam-laid nonwovens, along with the pilot scale results obtained at VTT in Finland. For paper and board grades, the most direct advantage of foam forming is the potential to produce very uniform webs from longer and coarser fibers and obtain material savings through that. Another main point is increased solids content after a wet press, which may lead to significant energy savings in thermal drying. Finally, the potential to introduce “difficult” raw materials like long synthetic or manmade fibers into a papermaking process enables the manufacturing of novel products in an existing production line. This paper also briefly discusses other interesting foam-based applications, including insulation and absorbing materials, foam-laid nonwovens, and materials for replacing plastics.
Original languageEnglish
Pages (from-to)499
Number of pages12
JournalTappi Journal
Volume18
Issue number8
Publication statusPublished - 1 Aug 2019
MoE publication typeA1 Journal article-refereed

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Foams
Raw materials
Papermaking
Fibers
Insulation
Energy conservation
Drying
Plastics

Cite this

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title = "Progress in foam forming technology",
abstract = "This paper summarizes recent developments in foam forming that were mainly carried out in pilot scale. In addition to improving the efficiency of existing processes and allowing better uniformity in material, a wide variety of raw materials can be utilized in foam forming. The focus of this paper is thin webs—papers, boards and foam-laid nonwovens, along with the pilot scale results obtained at VTT in Finland. For paper and board grades, the most direct advantage of foam forming is the potential to produce very uniform webs from longer and coarser fibers and obtain material savings through that. Another main point is increased solids content after a wet press, which may lead to significant energy savings in thermal drying. Finally, the potential to introduce “difficult” raw materials like long synthetic or manmade fibers into a papermaking process enables the manufacturing of novel products in an existing production line. This paper also briefly discusses other interesting foam-based applications, including insulation and absorbing materials, foam-laid nonwovens, and materials for replacing plastics.",
author = "Harri Kiiskinen and Kristian Salminen and Timo Lappalainen and Jaakko Asikainen and Ker{\"a}nen, {Janne T.} and Erkki Hellen",
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Progress in foam forming technology. / Kiiskinen, Harri; Salminen, Kristian; Lappalainen, Timo; Asikainen, Jaakko; Keränen, Janne T.; Hellen, Erkki.

In: Tappi Journal, Vol. 18, No. 8, 01.08.2019, p. 499.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Kiiskinen, Harri

AU - Salminen, Kristian

AU - Lappalainen, Timo

AU - Asikainen, Jaakko

AU - Keränen, Janne T.

AU - Hellen, Erkki

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AB - This paper summarizes recent developments in foam forming that were mainly carried out in pilot scale. In addition to improving the efficiency of existing processes and allowing better uniformity in material, a wide variety of raw materials can be utilized in foam forming. The focus of this paper is thin webs—papers, boards and foam-laid nonwovens, along with the pilot scale results obtained at VTT in Finland. For paper and board grades, the most direct advantage of foam forming is the potential to produce very uniform webs from longer and coarser fibers and obtain material savings through that. Another main point is increased solids content after a wet press, which may lead to significant energy savings in thermal drying. Finally, the potential to introduce “difficult” raw materials like long synthetic or manmade fibers into a papermaking process enables the manufacturing of novel products in an existing production line. This paper also briefly discusses other interesting foam-based applications, including insulation and absorbing materials, foam-laid nonwovens, and materials for replacing plastics.

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