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FLEXO Magazine : October 2013
will negatively affect proper fit and circularity, both contribut- ing to TIR issues. continued evoLution There have been many improvements in the technol- ogy in the structure of today ’s sleeves. In the past, one of the biggest issues was the sleeve expanding and contracting at different speeds. There are many different construction of- ferings of print sleeves today, varied by manufacturer. Choosing the proper sleeves depends on the ap- plication and what equipment is on hand. If given a choice, explore a print sleeve manu- factured with a non-woven, resin-saturated construction. These sleeves are built for maximum performance and stability at any speed. Some bridge sleeves now also come with a replaceable end slot for locking to the mandrel. No longer do you have to replace a whole bridge sleeve after the notch wears and starts af- fecting register; you only need to flip or replace the worn end ring. This is a great new cost- saving feature available on some bridge mandrels today. With new gearless presses it is a breeze to sleeve up a press with fixed-base man- drels in each print station. Setup times to prepare bridge sleeves, plate sleeves and anilox sleeves have been cut from hours to minutes. Today ’s sleeves are capable of holding the tightest register and printing consistent dots without any high or low spots at very fast speeds. Print sleeves have tuned flexographic printing to a higher level of quality and made pressrooms much more profit- able. While sleeves can increase throughput, they are more susceptible to damage in everyday handling. However, with proper care and training they will be the greatest asset you will make to your pressroom. n About the Author: Sinesio Garduno is the Midwest/West Coast technical graphics advisor for Harper Graph- icSolutions. He has more than 23 years experience in the flexographic industry and has hands-on experience on all aspects of flexible packaging production from start to finish. 104 FLeXo OCTOBER 2013 www.flexography.org Return Address: Tesco Stores Ltd, P.O. Box5199, Northampton NN3 6ZA. Aldershot Welcome to your new look store Coupons inside! Please recycle me 5mm 5mm C M Y K TESCOAldershot98.28300nxMPS 162x229 TESCO Aldershot.indd 1 26/11/2012 13:16 call 2014 FTA excellence in flexography Awards for entries www.flexography.org/excellence nowacceptingentriesyear-round! Deadline: Jan. 10, 2014 (2013 Best of Show winners pictured above) Layers of a Harper anilox sleeve structure