Simultaneous analysis of die internal and external flows in slot coating process

Won Gi Ahn; Si Hyung Lee; Jaewook Nam; Byoungjin Chun; Hyun Wook Jung

doi:10.1252/jcej.17we313

Simultaneous analysis of die internal and external flows in slot coating process

Won Gi Ahn, Si Hyung Lee, Jaewook Nam, Byoungjin Chun, Hyun Wook Jung

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Three-dimensional (3-D) simulations on entire slot coating systems including regions inside the slot die and in coating bead are performed for correlating die internal and external flow fields. A CFD solver based on the finite volume method with a volume of fluid scheme is employed to investigate coating flow dynamics with free surfaces and menisci in the coating bead region. Operability windows for a Newtonian coating liquid in this process are determined using the simplified viscocapillary model and experiments, and then some flows states are quantitatively verified with 3-D model. The results from the 3-D model show that the final coating thickness with edge beads is satisfactorily predicted, and agree with experimental observation and the relationship between die internal and external flow features is closely linked.

Original language	English
Pages (from-to)	253-258
Number of pages	6
Journal	Journal of Chemical Engineering of Japan
Volume	52
Issue number	3
DOIs	https://doi.org/10.1252/jcej.17we313
Publication status	Published - 2019

Keywords

Coating Defects
Operability Window
Slot Coating
Three-dimensional Simulation
Viscocapillary Model

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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10.1252/jcej.17we313

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title = "Simultaneous analysis of die internal and external flows in slot coating process",

abstract = "Three-dimensional (3-D) simulations on entire slot coating systems including regions inside the slot die and in coating bead are performed for correlating die internal and external flow fields. A CFD solver based on the finite volume method with a volume of fluid scheme is employed to investigate coating flow dynamics with free surfaces and menisci in the coating bead region. Operability windows for a Newtonian coating liquid in this process are determined using the simplified viscocapillary model and experiments, and then some flows states are quantitatively verified with 3-D model. The results from the 3-D model show that the final coating thickness with edge beads is satisfactorily predicted, and agree with experimental observation and the relationship between die internal and external flow features is closely linked.",

keywords = "Coating Defects, Operability Window, Slot Coating, Three-dimensional Simulation, Viscocapillary Model",

author = "Ahn, {Won Gi} and Lee, {Si Hyung} and Jaewook Nam and Byoungjin Chun and Jung, {Hyun Wook}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Korea government (MSIP) (NRF-2016R1A5A1009592 and 2017R1E1A1A0-1075107) and the Ministry of Trade, Industry & Energy (MOTIE, Korea) under the Industrial Technology Innovation Program (No. 10067706). Publisher Copyright: Cpoyright {\textcopyright} 2019 The Society of Chemical Engineers, Japan",

year = "2019",

doi = "10.1252/jcej.17we313",

language = "English",

volume = "52",

pages = "253--258",

journal = "Journal of Chemical Engineering of Japan",

issn = "0021-9592",

publisher = "Society of Chemical Engineers, Japan",

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TY - JOUR

T1 - Simultaneous analysis of die internal and external flows in slot coating process

AU - Ahn, Won Gi

AU - Lee, Si Hyung

AU - Nam, Jaewook

AU - Chun, Byoungjin

AU - Jung, Hyun Wook

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Korea government (MSIP) (NRF-2016R1A5A1009592 and 2017R1E1A1A0-1075107) and the Ministry of Trade, Industry & Energy (MOTIE, Korea) under the Industrial Technology Innovation Program (No. 10067706). Publisher Copyright: Cpoyright © 2019 The Society of Chemical Engineers, Japan

PY - 2019

Y1 - 2019

N2 - Three-dimensional (3-D) simulations on entire slot coating systems including regions inside the slot die and in coating bead are performed for correlating die internal and external flow fields. A CFD solver based on the finite volume method with a volume of fluid scheme is employed to investigate coating flow dynamics with free surfaces and menisci in the coating bead region. Operability windows for a Newtonian coating liquid in this process are determined using the simplified viscocapillary model and experiments, and then some flows states are quantitatively verified with 3-D model. The results from the 3-D model show that the final coating thickness with edge beads is satisfactorily predicted, and agree with experimental observation and the relationship between die internal and external flow features is closely linked.

AB - Three-dimensional (3-D) simulations on entire slot coating systems including regions inside the slot die and in coating bead are performed for correlating die internal and external flow fields. A CFD solver based on the finite volume method with a volume of fluid scheme is employed to investigate coating flow dynamics with free surfaces and menisci in the coating bead region. Operability windows for a Newtonian coating liquid in this process are determined using the simplified viscocapillary model and experiments, and then some flows states are quantitatively verified with 3-D model. The results from the 3-D model show that the final coating thickness with edge beads is satisfactorily predicted, and agree with experimental observation and the relationship between die internal and external flow features is closely linked.

KW - Coating Defects

KW - Operability Window

KW - Slot Coating

KW - Three-dimensional Simulation

KW - Viscocapillary Model

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U2 - 10.1252/jcej.17we313

DO - 10.1252/jcej.17we313

M3 - Article

AN - SCOPUS:85065303812

SN - 0021-9592

VL - 52

SP - 253

EP - 258

JO - Journal of Chemical Engineering of Japan

JF - Journal of Chemical Engineering of Japan

IS - 3

ER -

Simultaneous analysis of die internal and external flows in slot coating process

Abstract

Keywords

ASJC Scopus subject areas

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