Practical operations for intermittent dual-layer slot coating processesPractical operations for intermittent dual-layer slot coating processes
- Other Titles
- Practical operations for intermittent dual-layer slot coating processes
- Authors
- Park, Jin Seok; Jee, Sanghun; Chun, Byoungjin; Jung, Hyun Wook
- Issue Date
- 8월-2022
- Publisher
- KOREAN SOC RHEOLOGY
- Keywords
- Slot coating; Dual-layer; Intermittent coating; Edge formation; Liquid transfer
- Citation
- KOREA-AUSTRALIA RHEOLOGY JOURNAL, v.34, no.3, pp.181 - 186
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- KOREA-AUSTRALIA RHEOLOGY JOURNAL
- Volume
- 34
- Number
- 3
- Start Page
- 181
- End Page
- 186
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/142891
- DOI
- 10.1007/s13367-022-00033-y
- ISSN
- 1226-119X
- Abstract
- Transient behaviors of dual-layered patches for Newtonian liquids were numerically investigated in dual-layer slot coating processes for the first time using step-changed inlet flows. To further tune the leading and trailing edges in a patch cycle, startup and end lag times between the top and bottom layers were proposed, considering the flow state of a bottom-layer liquid in a coating bead region. Carefully chosen lag times significantly reduced the defects in the leading and trailing edges of a dual-layered patch. It was also found that a greater coating layer viscosity results in a greater amount of residue left on the die lips, which affects the next patch cycle.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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