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FLEXO Magazine : January 2009
TECHNOLOGIES & TECHNIQUES ACT/Hard ACT/Soft shown in Figures 5 and 6. Notice the reduction of dot gain (30 percent 133) and slur as the cushion durometer increases us- ing the high durometer plate. CONCLUSIONS ??The best overall results were achieved using ACE D, a 60 Shore A photopolymer plate and cushion No. 3, a high du- rometer cushion sleeve. ?? The lowest dot gain in the highlight region to quarter tones was produced with ACE D and cushion sleeve No. 3. ??The combination of the ACE D plate and the high durometer sleeve eliminated slur and reduced the dot gain. ??Cushion selection is not as critical when using ACE D plates. With ACE D both medium and high durometer cushions provided similar results. ACT/Medium ??There was not a significant difference in shadow contrast within the design of this experiment. ? ABOUT THE AUTHORS: Rich Emmerling is the technical manager for Flint Group Flexographic Products. He has been in the printing industry for more than 25 years, with 20 in the flexographic plate business. Bill Bower is the director of sleeve sales for Flint Group Flexographic Products. He has more than 12 years experience in the flexo industry, including the last nine years in sleeves.
End of Year 2008