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FLEXO Magazine : June2010
Technologies & Techniques www.flexography.org june 2010 FLeXO 55 A blade analysis can address many other issues, such as the type of blade tip to use for specific applications (Figure 7). So get your doctoring team winning the game! A worn blade analysis can identify the doctoring players—both mechani- cal and human—that need some help. Providing this help is no where near as costly as filling up dumpsters with printed waste and having a lot of press downtime. n ABOUT THE AUTHOR: Tom Allison Jr., president of Allison Systems Corp. , and its blade systems division Allisontech Sales, has about 30 years experience in design and manufac- turing of doctor blades and doctor blade systems used world- wide for gravure, flexography, pad printing, and specialty applications. He has a BS in Engineering Physics from Cornell University, a professional engineer license from New York State and con- siderable experience in satellite, nuclear warship, and power plant systems engineering, in addition to print technology. More than 45 years ago, his father, Tom Allison, Sr., invented the first truly effective doctor blade edge-finishing machine—ending a century of hand-finished gravure doctor blades. Tom Sr. also designed critical new blade systems for gravure and flexography. Tom Jr. and his company continue to develop, improve, and supply these important innovations, worldwide. Figure 3. The wear pattern of a blade that has been cranked down. Figure 4. A wrinkled doctor blade. Wrinkling is often the reason some operators add excess pressure to blades. Figure 5. A wrinkle-free clamp blade holder. Figure 6. A blade analysis in which the blade is bowing away from the center of the anilox. Figure 7. Different blade tips have different effects. A blade analysis can determine which is right for the application/problem. FLX_June2010_mech.indd 55 6/10/10 9:39 AM