Foam forming technology enables utilization of long fibers

Research output: Contribution to conferenceConference AbstractScientific

Abstract

A lot of effort has been put to improve the efficiency of paper- and board making processes. Main goal has been to reduce raw material consumption and to improve energy, water and raw-material efficiency. Foam forming has been studied as one opportunity. In foam forming fibres are dispersed into aqueous foam, which reduces fibre flocculation and thus improves the quality of the product. This can lead to excellent formation and bulky structure but simultaneously reduces the strength properties of paper or board. In this study the effects of addition of tempo-oxidized cellulose nanofibrils (CNF) on foam formed paper strength properties have been studied on pilot-scale paper making environment. Cellulose nanofibrils were prepared in a pilot-scale from never dried bleached hardwood kraft pulp, which was chemically pre-treated to improve the functionality of the cellulose nanofibrils. Tempo-mediated oxidation was used as a cost effective method prior to mechanical fibrillation. The pulp had a total charge of 1 mmol/g and the hydrogel was prepared by feeding the fiber suspension once through a microfluidizer. The pilot trials reported in this paper were run with kraft and CTMP pulps by using both foam and water forming. The foam was generated in a tank and the machine was run in a gap mode. The running speed of pilot machine was 400 - 600 m/min. The results showed that the addition of 2-6 % of CNF into kraft and CTMP pulp furnishes could improve paper tensile strength properties 22-36 % and z-strengths 14-50 % and simultaneously maintain excellent formation. These results support our view that tempo-oxidized CNF can be used as a strength additive in foam formed papers.
Original languageEnglish
Publication statusPublished - 2015
Event9th International Paper and Coating Chemistry Symposium: International Paper Physics Conference - Tokyo, Japan
Duration: 29 Oct 20151 Nov 2015
Conference number: 9

Conference

Conference9th International Paper and Coating Chemistry Symposium
Abbreviated titleIPCCS 2015
CountryJapan
CityTokyo
Period29/10/151/11/15
OtherJoint conference with 9th International Paper and Coating Chemistry Symposium

Fingerprint

Foams
Cellulose
Fibers
Pulp
Raw materials
Kraft pulp
Hardwoods
Flocculation
Hydrogels
Water
Tensile strength
Oxidation
Costs

Keywords

  • foam forming
  • long fibres
  • formation
  • flocculation
  • dry solids content

Cite this

Katariina, T., Kiiskinen, H., Jäsberg, A., Martikainen, P., Asikainen, J., & Koponen, A. (2015). Foam forming technology enables utilization of long fibers. Abstract from 9th International Paper and Coating Chemistry Symposium, Tokyo, Japan.
Katariina, Torvinen ; Kiiskinen, Harri ; Jäsberg, Ari ; Martikainen, Pekka ; Asikainen, Jaakko ; Koponen, Antti. / Foam forming technology enables utilization of long fibers. Abstract from 9th International Paper and Coating Chemistry Symposium, Tokyo, Japan.
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abstract = "A lot of effort has been put to improve the efficiency of paper- and board making processes. Main goal has been to reduce raw material consumption and to improve energy, water and raw-material efficiency. Foam forming has been studied as one opportunity. In foam forming fibres are dispersed into aqueous foam, which reduces fibre flocculation and thus improves the quality of the product. This can lead to excellent formation and bulky structure but simultaneously reduces the strength properties of paper or board. In this study the effects of addition of tempo-oxidized cellulose nanofibrils (CNF) on foam formed paper strength properties have been studied on pilot-scale paper making environment. Cellulose nanofibrils were prepared in a pilot-scale from never dried bleached hardwood kraft pulp, which was chemically pre-treated to improve the functionality of the cellulose nanofibrils. Tempo-mediated oxidation was used as a cost effective method prior to mechanical fibrillation. The pulp had a total charge of 1 mmol/g and the hydrogel was prepared by feeding the fiber suspension once through a microfluidizer. The pilot trials reported in this paper were run with kraft and CTMP pulps by using both foam and water forming. The foam was generated in a tank and the machine was run in a gap mode. The running speed of pilot machine was 400 - 600 m/min. The results showed that the addition of 2-6 {\%} of CNF into kraft and CTMP pulp furnishes could improve paper tensile strength properties 22-36 {\%} and z-strengths 14-50 {\%} and simultaneously maintain excellent formation. These results support our view that tempo-oxidized CNF can be used as a strength additive in foam formed papers.",
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author = "Torvinen Katariina and Harri Kiiskinen and Ari J{\"a}sberg and Pekka Martikainen and Jaakko Asikainen and Antti Koponen",
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Katariina, T, Kiiskinen, H, Jäsberg, A, Martikainen, P, Asikainen, J & Koponen, A 2015, 'Foam forming technology enables utilization of long fibers' 9th International Paper and Coating Chemistry Symposium, Tokyo, Japan, 29/10/15 - 1/11/15, .

Foam forming technology enables utilization of long fibers. / Katariina, Torvinen; Kiiskinen, Harri; Jäsberg, Ari; Martikainen, Pekka; Asikainen, Jaakko; Koponen, Antti.

2015. Abstract from 9th International Paper and Coating Chemistry Symposium, Tokyo, Japan.

Research output: Contribution to conferenceConference AbstractScientific

TY - CONF

T1 - Foam forming technology enables utilization of long fibers

AU - Katariina, Torvinen

AU - Kiiskinen, Harri

AU - Jäsberg, Ari

AU - Martikainen, Pekka

AU - Asikainen, Jaakko

AU - Koponen, Antti

N1 - Project code: 102156

PY - 2015

Y1 - 2015

N2 - A lot of effort has been put to improve the efficiency of paper- and board making processes. Main goal has been to reduce raw material consumption and to improve energy, water and raw-material efficiency. Foam forming has been studied as one opportunity. In foam forming fibres are dispersed into aqueous foam, which reduces fibre flocculation and thus improves the quality of the product. This can lead to excellent formation and bulky structure but simultaneously reduces the strength properties of paper or board. In this study the effects of addition of tempo-oxidized cellulose nanofibrils (CNF) on foam formed paper strength properties have been studied on pilot-scale paper making environment. Cellulose nanofibrils were prepared in a pilot-scale from never dried bleached hardwood kraft pulp, which was chemically pre-treated to improve the functionality of the cellulose nanofibrils. Tempo-mediated oxidation was used as a cost effective method prior to mechanical fibrillation. The pulp had a total charge of 1 mmol/g and the hydrogel was prepared by feeding the fiber suspension once through a microfluidizer. The pilot trials reported in this paper were run with kraft and CTMP pulps by using both foam and water forming. The foam was generated in a tank and the machine was run in a gap mode. The running speed of pilot machine was 400 - 600 m/min. The results showed that the addition of 2-6 % of CNF into kraft and CTMP pulp furnishes could improve paper tensile strength properties 22-36 % and z-strengths 14-50 % and simultaneously maintain excellent formation. These results support our view that tempo-oxidized CNF can be used as a strength additive in foam formed papers.

AB - A lot of effort has been put to improve the efficiency of paper- and board making processes. Main goal has been to reduce raw material consumption and to improve energy, water and raw-material efficiency. Foam forming has been studied as one opportunity. In foam forming fibres are dispersed into aqueous foam, which reduces fibre flocculation and thus improves the quality of the product. This can lead to excellent formation and bulky structure but simultaneously reduces the strength properties of paper or board. In this study the effects of addition of tempo-oxidized cellulose nanofibrils (CNF) on foam formed paper strength properties have been studied on pilot-scale paper making environment. Cellulose nanofibrils were prepared in a pilot-scale from never dried bleached hardwood kraft pulp, which was chemically pre-treated to improve the functionality of the cellulose nanofibrils. Tempo-mediated oxidation was used as a cost effective method prior to mechanical fibrillation. The pulp had a total charge of 1 mmol/g and the hydrogel was prepared by feeding the fiber suspension once through a microfluidizer. The pilot trials reported in this paper were run with kraft and CTMP pulps by using both foam and water forming. The foam was generated in a tank and the machine was run in a gap mode. The running speed of pilot machine was 400 - 600 m/min. The results showed that the addition of 2-6 % of CNF into kraft and CTMP pulp furnishes could improve paper tensile strength properties 22-36 % and z-strengths 14-50 % and simultaneously maintain excellent formation. These results support our view that tempo-oxidized CNF can be used as a strength additive in foam formed papers.

KW - foam forming

KW - long fibres

KW - formation

KW - flocculation

KW - dry solids content

M3 - Conference Abstract

ER -

Katariina T, Kiiskinen H, Jäsberg A, Martikainen P, Asikainen J, Koponen A. Foam forming technology enables utilization of long fibers. 2015. Abstract from 9th International Paper and Coating Chemistry Symposium, Tokyo, Japan.