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ETDs @PUC-Rio
Estatística
Título: EXPERIMENTAL STUDY OF LIQUID TRANSFER FROM A PLATE AND A ROTATING ROLL
Autor: BRUNO PEREIRA DE MACEDO
Colaborador(es): MARCIO DA SILVEIRA CARVALHO - Orientador
DANMER PAULINO MAZA QUINONES - Coorientador
Catalogação: 24/JAN/2018 Língua(s): PORTUGUESE - BRAZIL
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.
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
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.
Descrição: Arquivo:   
COVER, ACKNOWLEDGEMENTS, RESUMO, ABSTRACT, SUMMARY AND LISTS PDF    
CHAPTER 1 PDF    
CHAPTER 2 PDF    
CHAPTER 3 PDF    
CHAPTER 4 PDF    
REFERENCES PDF