Ablatable elements for making flexographic printing plates
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United States of America Patent
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May 29, 2012
Grant Date -
Oct 23, 2008
app pub date -
Apr 23, 2007
filing date -
Apr 23, 2007
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Abstract
Flexographic printing plates and other relief images can be formed from a laser-ablatable element having a laser-ablatable layer that is at least 20 μm in thickness. The laser-ablatable layer includes a film-forming material that is a laser-laser-ablatable material or the film-forming material has dispersed therein a laser-ablatable material. The laser-ablatable material is a polymeric material that when heated to 300° C. at a rate of 10° C./minute, loses at least 60% of its mass to form at least one predominant low molecular weight product. The element can be imaged by ablation at an energy of at least 1 J/cm2 to provide a relief image.
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