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Home March 15, 2010

Surface Prep
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Some Things to Remember About Dynamic Surface Tension

Published Tuesday, April 01, 2003

Most flexible packaging plants can measure surface tension of their films by using dyne solutions. The dyne solutions are chemical mixtures that have a specific dyne number. Ink and coatings, like dyne solutions, have a surface tension associated with them. Typically, water-based systems have higher surface tension numbers than solvent-based inks and coatings. However, unlike the static number we associate with substrate measurements, inks and coatings are complex mixtures and behave differently depending on the press speed. The surface tension of inks and coatings on press do not necessarily stay constant. The values can change during the printing ...

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