| 학회 | 한국화학공학회 |
| 학술대회 | 2020년 가을 (10/14 ~ 10/16, e-컨퍼런스) |
| 권호 | 26권 1호, p.595 |
| 발표분야 | 이동현상 |
| 제목 | A Criterion for Low and High-Speeds Slot Coating Processes of the Newtonian Fluid. |
| 초록 | Slot coating processes can be classified by whether it uses a vacuum or not. The vacuum is essential for slot coating processes with the high speed of the web on which coating liquid is applied. At the same time, many successive cases are reported for a low-speed process without a vacuum. However, there are no theoretical criteria reported which classify the speed of slot coating processes so that engineers may not be clear about when they should use high speed or low speed. In this study, steady-state analysis is used to find a governing equation of the web speed for a stable process. Then, it is verified by the graphical method that the solution has a range. This range tells when a vacuum is not applied, the maximum web speed is bounded while a process with vacuum enables any high web speed as large as the amount of vacuum applied. Therefore, we can find the criterion for the web speed when the use of a vacuum is essential or not for that amount of web speed. Moreover, this criterion depends on fluid properties and operating conditions so that it plays the role of a step in a workflow that engineers can choose between low and high-speeds processes. |
| 저자 | 윤지환, 남재욱 |
| 소속 | 서울대 |
| 키워드 | 이동현상 |
| 원문파일 | 초록 보기 |
