Method for noncontact testing of the degree of hardening of ink and coating films
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United States of America Patent
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Aug 2, 2011
Grant Date -
Oct 2, 2008
app pub date -
Mar 28, 2008
filing date -
Mar 28, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
For more efficient and energy-saving drying of ink and/or coating films in printing machines, the drying or hardening process must be better monitored. Therefore a method is proposed for determining the degree of hardening of one or more printed ink and/or coating films on a substrate that was coated in an intaglio, flexographic or offset printing process. The degree of hardening or drying due to the hardening or drying process is determined indirectly via the change of mechanical and/or viscoelastic properties of the ink and/or coating films on the substrate. An ultrasound measurement is used for this purpose.
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