Effect of shim configuration on internal die flows for non-Newtonian coating liquids in slot coating process
- Authors
- Jin, Guang Lin; Ahn, Won-Gi; Kim, See Jo; Nam, Jaewook; Jung, Hyun Wook; Hyun, Jae Chun
- Issue Date
- 5월-2016
- Publisher
- KOREAN SOC RHEOLOGY
- Keywords
- slot die; shim configuration; internal die design; non-Newtonian liquid; slot coating
- Citation
- KOREA-AUSTRALIA RHEOLOGY JOURNAL, v.28, no.2, pp.159 - 164
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- KOREA-AUSTRALIA RHEOLOGY JOURNAL
- Volume
- 28
- Number
- 2
- Start Page
- 159
- End Page
- 164
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/88741
- DOI
- 10.1007/s13367-016-0015-6
- ISSN
- 1226-119X
- Abstract
- In this study, a strategy for designing optimal shim configuration inside a slot die is suggested to assure the uniform coating flow distribution of various non-Newtonian shear-thinning liquids at the die exit in a slot coating system. Flow patterns of non-Newtonian liquids inside the slot die, via three-dimensional computations, have been compared using various shim geometries which can adjust the flow region in a slot manifold. The rather non-uniform (parabolic) velocity distributions of shear-thinning liquids at the die exit under the basic shim condition could be effectively flattened by the modification of shim geometry without the change of die manifold structure. Dimensions of hybrid shims for controlling flow features at edge and center regions within slit channel are positively tuned, according to the shear-thinning level of coating liquids.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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