Drying of Coated Paper: Simulation and Pilot Experiments

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

10 Citations (Scopus)

Abstract

This paper presents a new structure of the macroscopic drying model for simulation of the drying process of the coated web. The consolidation (dewatering) process of the coated layer is divided into three phases separated by the first and second critical points. The model takes into account filter cake formation, and skin layer formation on the coating surface. Other drying parameters such as temperature and moisture profiles, absorption and evaporation rates are calculated by this model. Some of the experimental results obtained from the pilot coating trials are also shown and these are compared with the simulated data. Commonly measured data included paper temperatures in drying. Furthermore, gloss, scattering and web moisture, measured between the drying units with newly developed measurement system, are presented here. Analysis of the simulated and measured data showed that the moisture penetration rate into the base paper slowed down dramatically after the first critical point. Mottling behavior of the printed samples in conjunction with the drying conditions is also discussed.
Original languageEnglish
Title of host publication93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC
Subtitle of host publicationBook B
Pages221-228
Publication statusPublished - 2007
MoE publication typeA4 Article in a conference publication
Event93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC - Montreal, Canada
Duration: 6 Feb 20078 Feb 2007

Conference

Conference93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC
Abbreviated titlePAPTAC
CountryCanada
CityMontreal
Period6/02/078/02/07

Fingerprint

Drying
Moisture
Experiments
Coatings
Dewatering
Consolidation
Skin
Evaporation
Scattering
Temperature

Cite this

Timofeev, O., Pajari, H., Koskela, H., Paaso, J., & Kiiskinen, H. (2007). Drying of Coated Paper: Simulation and Pilot Experiments. In 93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC: Book B (pp. 221-228)
Timofeev, Oleg ; Pajari, Heikki ; Koskela, Hanna ; Paaso, Janne ; Kiiskinen, Harri. / Drying of Coated Paper : Simulation and Pilot Experiments. 93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC: Book B. 2007. pp. 221-228
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title = "Drying of Coated Paper: Simulation and Pilot Experiments",
abstract = "This paper presents a new structure of the macroscopic drying model for simulation of the drying process of the coated web. The consolidation (dewatering) process of the coated layer is divided into three phases separated by the first and second critical points. The model takes into account filter cake formation, and skin layer formation on the coating surface. Other drying parameters such as temperature and moisture profiles, absorption and evaporation rates are calculated by this model. Some of the experimental results obtained from the pilot coating trials are also shown and these are compared with the simulated data. Commonly measured data included paper temperatures in drying. Furthermore, gloss, scattering and web moisture, measured between the drying units with newly developed measurement system, are presented here. Analysis of the simulated and measured data showed that the moisture penetration rate into the base paper slowed down dramatically after the first critical point. Mottling behavior of the printed samples in conjunction with the drying conditions is also discussed.",
author = "Oleg Timofeev and Heikki Pajari and Hanna Koskela and Janne Paaso and Harri Kiiskinen",
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Timofeev, O, Pajari, H, Koskela, H, Paaso, J & Kiiskinen, H 2007, Drying of Coated Paper: Simulation and Pilot Experiments. in 93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC: Book B. pp. 221-228, 93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC, Montreal, Canada, 6/02/07.

Drying of Coated Paper : Simulation and Pilot Experiments. / Timofeev, Oleg; Pajari, Heikki; Koskela, Hanna; Paaso, Janne; Kiiskinen, Harri.

93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC: Book B. 2007. p. 221-228.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - Drying of Coated Paper

T2 - Simulation and Pilot Experiments

AU - Timofeev, Oleg

AU - Pajari, Heikki

AU - Koskela, Hanna

AU - Paaso, Janne

AU - Kiiskinen, Harri

PY - 2007

Y1 - 2007

N2 - This paper presents a new structure of the macroscopic drying model for simulation of the drying process of the coated web. The consolidation (dewatering) process of the coated layer is divided into three phases separated by the first and second critical points. The model takes into account filter cake formation, and skin layer formation on the coating surface. Other drying parameters such as temperature and moisture profiles, absorption and evaporation rates are calculated by this model. Some of the experimental results obtained from the pilot coating trials are also shown and these are compared with the simulated data. Commonly measured data included paper temperatures in drying. Furthermore, gloss, scattering and web moisture, measured between the drying units with newly developed measurement system, are presented here. Analysis of the simulated and measured data showed that the moisture penetration rate into the base paper slowed down dramatically after the first critical point. Mottling behavior of the printed samples in conjunction with the drying conditions is also discussed.

AB - This paper presents a new structure of the macroscopic drying model for simulation of the drying process of the coated web. The consolidation (dewatering) process of the coated layer is divided into three phases separated by the first and second critical points. The model takes into account filter cake formation, and skin layer formation on the coating surface. Other drying parameters such as temperature and moisture profiles, absorption and evaporation rates are calculated by this model. Some of the experimental results obtained from the pilot coating trials are also shown and these are compared with the simulated data. Commonly measured data included paper temperatures in drying. Furthermore, gloss, scattering and web moisture, measured between the drying units with newly developed measurement system, are presented here. Analysis of the simulated and measured data showed that the moisture penetration rate into the base paper slowed down dramatically after the first critical point. Mottling behavior of the printed samples in conjunction with the drying conditions is also discussed.

M3 - Conference article in proceedings

SN - 978-1-8970-2324-2

SN - 978-1-8970-2325-9

SN - 978-1-8970-2326-6

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BT - 93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC

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Timofeev O, Pajari H, Koskela H, Paaso J, Kiiskinen H. Drying of Coated Paper: Simulation and Pilot Experiments. In 93rd Annual Meeting of the Pulp and Paper Technical Association of Canada, PAPTAC: Book B. 2007. p. 221-228