These are flashcards an notes made by students on topics like 'spraying', 'well-defined' and 'drying', originating from:

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- Wageningen University
ISBN-13 9990002019708
665 Flashcards & Notes
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Study Cards on spraying, well-defined, drying

Which 3 application methods to form a film are there?
  • Mechanical method
  • Dip casting
  • Spraying
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Mention some mechanical methods to form an isolated film
  • Make a well-defined layer of a solution or melt on a smooth surface, by a casting knife that may have a solution reservoir. The knife forms a layer of solution on the surface of the product. By subsequent drying or cooling, a film is formed.
  • With the help of brushes
  • Letting the product pass a falling film, which then spreads around the product
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What is a big advantage of spray drying?
Spray can lead to well-defined, thin films, while the product can be sprayed from all sides, or specifically from one side.
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Is a solution or melt used for spraying as mechanism to coat?
Usually, a solution is used, although there are examples of melt based spraying.
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