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FLEXO Magazine : August 2013
The Future of Flexo. TODAY flexodaily.com fb.com/ andvre twitter.com/ andvre linkd.in/ AndVre youtube.com/ andersonvreeland gplus.to/ andvre 866.282.7697 | fx: 800.223.6869 | www.AndVre.com | info@AndVre.com theDi fference! Experience The future of flexo is available today from Anderson & Vreeland. For the past 50+ years we have introduced new products and technologies that have continually improved flexo plate quality and efficiency while improving sustainability. Back then it was matrix and rubber. Today it is in-the-round technology and direct laser engraving. Stay tuned for what the future holds. • First, LED arrays burn out much less frequently than mercury bulbs • A UV LED array has a lifespan of 20,000 + hours before it needs replacing • Typical mercury bulbs have a lifespan of 500 to 2,000 hours • UV LED has a more than 10-fold decrease in press down- time needed to replace bulbs • UV LED also has fewer moving parts (no shutter, fans, etc.). This means less maintenance overall—a 75 percent reduction in most cases UV LED systems are solid state, meaning there is no gas to vaporize and excite. The system can be turned on and off instantly, with no warm-up or ramp down, shaving precious seconds off of run time. As for speed, UV LED can potentially cure faster than tra- ditional mercury bulbs, which means that presses can be run at higher speeds without a loss in quality. Faster press speeds means more product produced per hour, higher capacity, and higher profits. While press uptime and speed directly affect the profits to be gained from a press, UV LED also presents a unique opportunity to use energy more efficiently. LED lights emit light over a very narrow range in the light spectrum, typi- cally centered around 395 nm. Mercury lights emit light over a broad range, including the UV spectrum, visible light, and infrared light. Visible light and infrared light do not contribute to curing; this light represents wasted energy in the system. In addition, infrared light generates heat, which can create other problems. Thus, LED lights make a much more efficient use of power in the system. (Figure 2). Furthermore, because UV LED lights do not emit infrared light and do not need high voltage to vaporize and excite mer- cury, UV LED systems do not need special fans and blowers to keep the temperature down. Fewer parts to power means less energy consumption. Between the efficient use of energy, lower power require- ments, and no need to produce high voltage, a UV LED sys- tem can realize a whopping 50 percent decrease in energy consumption. And the less energy consumed, the less money spent on electricity. Broad ranging, yet conservative models indicate that energy savings could reach 80 percent or higher (keeping job size equal) with a UV LED system in place of traditional mer- cury UV. Productivity increases as well with UV LED allowing more jobs to be run in the same amount of time, resulting in incremental revenue. Statistics were gleaned using a 13-in., eight-color, press as a model. Similarly, maintenance costs come in significantly smaller, at just 5 percent that of tradi- tional mercury UV. Admittedly, initial cost of implementation is greater. Capital costs associated with installation of a UV LED system run near www.flexography.org august 2013 FLEXO 69