Method of manufacturing liquid flow guiding structures to porous substrates
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United States of America Patent
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Jul 19, 2016
Grant Date -
Jan 3, 2013
app pub date -
Dec 15, 2010
filing date -
Dec 15, 2009
priority date (Note) -
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Abstract
The invention relates to a method for manufacturing liquid- guiding structural layers by flexo or gravure printing on a substrate sheet, using a printing solution, which alters the properties of the substrate sheet in such a way that liquid flow is prevented in the area of the structural layers. The penetrability of the printing layer into the substrate sheet can be regulated by the printing-cylinder pressure and the composition of the printing solution. In the method it is possible to use printing solutions consisting of economical polymers and a solvent. In terms of printing technology, the invention is compatible with existing printing machines and is thus highly suitable for mass production.
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