Título: | EXPERIMENTAL STUDY OF LIQUID TRANSFER FROM A PLATE AND A ROTATING ROLL | ||||||||||||||||||||||||||||||||
Autor: |
BRUNO PEREIRA DE MACEDO |
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Colaborador(es): |
MARCIO DA SILVEIRA CARVALHO - Orientador DANMER PAULINO MAZA QUINONES - Coorientador |
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Catalogação: | 24/JAN/2018 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=32786&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=32786&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.32786 | ||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||
Gravure printing process is widely used for the production of magazines
because of its high speed. Gravure printing application is being expanded to flexible
electronic circuits, at which the degree of precision is much higher, since small
printing defects can lead to circuit malfunctioning. Gravure printing process consists
in liquid transfer from one surface to another, forming a liquid bridge. However,
this seemingly simple operation has flow phenomena not well understood that
have a direct impact on the printing pattern. Liquid transfer forming liquid bridges
goes beyond printing processes and includes applications such as tribology, biology,
oil recovery and microfluidics. There are many studies driven towards the fundamental
understanding of liquid transfer between surfaces and cavities by computational
simulation. However, experimental analyses are rare because of the complexity
of the problem, mainly associated with the small scale and high speed of the
flow. The goal of this research is to analyze experimentally the liquid transfer dynamics
of a liquid drop to a rotating cylinder. The experiments were done using a
draw-down coating apparatus with a rotating roll and a high-speed camera for flow
visualization. The results show how different liquid properties, surface wettability
and operating conditions affect the formation of the liquid bridge, the volume of
liquid transfer and the printing pattern.
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