Interpack Release - May 2014
Reifenhäuser Kiefel Extrusion and DuPont Packaging & Industrial Polymers have developed a film combining Reifenhäuser's EVOLUTION barrier blown film DuPont's Appeel sealant resin which seals directly and effectively to mono-APET trays, even through fat and meat juices.
Compared to traditional lidding films the use of a co-extruded sealing layer provides a higher fat barrier, perforation reisistance, gloss and transparency. A major cost advantage of this new approach arises from the fact that it eliminates the need for an additional polyolefin-based lamination film on the APET tray. As a result, trims can be directly recycled, the bottom web costs can be reduced by up to 40 percent and the total weight of the tray can be up to 15 percent lower without loss in stiffness. This allows for additional savings in raw material costs as well as in ecotax and a reduction in greenhouse gas emissions.
The new lidding film for mono-APET trays comes with a layer of a printable PA outside, which provides the heat resistance required for contact with the sealing bar. Combined with the relatively low seal initiation temperature provided by the inside layer, this structure allows for direct printing and sealing of the film without the costly extra production step of laminating to a reverse-printed OPET layer. This brings additional cost savings for applications using self-adhesive labels or surface printing. In any event, if required by the customer, the new film also can be laminated to a reverse-printed OPET layer.
Unlike other lacquers and peel systems, the new lidding sealant resin provides a fusion seal to APET, providing outstanding seal integrity even through surface contamination caused by fat or meat juices. This also is true for anti-fog coated films. In addition, the new lidding film structure makes it possible to incorporate easy-open behavior at the interface between tie and sealant layer.
ENDS
Reifenhäuser Kiefel Extrusion GmbH is a member of the Reifenhäuser group which consists of six business units and over 1,200 employees and is the largest extrusion network in the industry. The company is a leading German manufacturer of high-quality blown film extrusion systems and peripheral equipment for the production of flexible films and has over 40 years of a successful history worldwide in the production of simple mono layer up to sophisticated 9-layer barrier film lines for a wide variety of applications.
DuPont Packaging & Industrial Polymers manufactures an extensive mix of adhesive, barrier, peelable lidding and sealant resins and provides a globally networked development team to work with customers on packaging programs that help protect the product, environment; improve shelf appeal, convenience; and reduce cost in the food, cosmetics, medical products and other consumer goods and industrial packaging industries.
DuPont (NYSE: DD) has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials, and services since 1802. The company believes that by collaborating with customers, governments, NGOs, and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels, and protecting life and the environment. For additional information about DuPont and its commitment to inclusive innovation, please visit (www.dupont.com).
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