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FLEXO Magazine : May 2011
Technologies & Techniques coating weight was higher than with the conventional method. However, comparing the results be- tween the plate cell pattern and capped plate reveals another reduction, despite their average coating weight being the same. Whereas the plate cell patterned plate had an average OTR of 166, only 0.5 below the conventional plate, the capped plate had an OTR of 97.35. Both samples of the 2-inch squares from the capped plate had a much lower OTR than either of the squares tested from the plate cell pattern. While comparing the results of my research with the spec- ifications of the OTR for a 2.1 mil ori- ented polypropylene film with excellent oxygen barrier properties, the capped plate offers a competitive option, with its average OTR slightly higher. Printing an oxygen barrier coating in line offers some unique benefits. The substrate cost is lower and similar results can be achieved using a more cost-effective coating method. How- ever, it may be difficult to get the exact oxygen transmission rates achieved by other coating and extruding methods. This study confirmed that with the right plate technology, similar oxygen barrier properties may be achieved in a more cost-effective manner than purchasing pretreated films. n About the Author: Kasey Reed is a student at California Polytechnic State University in San Luis Obispo, CA. This paper is the result of research conducted with funding from the 2010 Foundation of Flexographic Technical Association’s Rossini Flexo- graphic Scholarship Competition. RefeRences Derek Illsley. Gas Barrier Coat- ings. Sun Chemical. June 8, 2010. Retrieved Oct. 10, 2010. Exxon Mobil Chemical. Bicor 210 ASB-X Oriented Polypropylene Film. Specification and Properties Sheet. October 2010 Kaufman, J . , et al. “An overview of oxygen scavenging packaging and applications. ” Retrieved November 2010. http://www.packagingnetwork. com/article.mvc/An-overview-of- oxygen-scavenging-packaging-an- 0003#scavengers Kerry, J. and Butler, P. Smart Packag- ing Technologies for Fast Moving Consumer Goods. Wiley, 2008. MacDermid Printing Solutions. “ Packaging Plates. ” 2005. Retrieved October 2010. http://www.macder- mid.com/printing/photo_am_pack. html Mitsubishi Gas Chemical Company Inc. “Ageless Eye Oxygen Indicator.” 2007. Retrieved October 2010. http:// www.mgc.co .jp/eng/products/abc/ ageless/eye.html Nexus. “P late Cell Patterning. ” 2002. Retrieved October 2010. http://art- prosoftware.com/nexusplatecell.htm Research Gate Scientific Network. “ Development of Ethylene-Absorb- ing Film for Fresh Produce Packag- ing. ” Retrieved October 2010. http:// www.researchgate.net/publica- tion/39025074_Development_of_Eth- ylene-Absorbing_Film_for_Fresh_ Produce_Packaging Sargeant, S. and Chang, K . “New Ultra High Barrier Packaging Film Technology Extends Product Shelf Life and Reduces Number of Manu- facturing Cycles. ” Toray Plastics Inc. 146 FLeXO may 2011 www.flexography.org For more information on R/bak® products please visit our web site at www.rogerscorp.com/rbak The Difference is the Cushion Visit Us At May2-3,2011 Booth# 910/912 A microscopic look at R/bak PSA2 Open-cell urethanes. (Magnified 100x) PSAPSA Rogers’ high performance cushion mounting tapes offer the solutions to provide quality, speed and consistency while saving you costs. With the open-cell construction, PSA2 products provide: Consistent print performance Higher running speeds Fewer press adjustments Less plate damage • • • • PSA2Tapes Open-cell urethanes. PSAPSA R/bak® PSASharkadREV_half3.indd 1 3/23/11 3:59:23 PM
Sustainable Spring 2011