Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New high barrier lidding film seals directly to mono APET trays

01.07.2014

In the context of their extensive collaboration to improve the cost efficiency, performance and sustainability of packaging applications, Reifenhäuser Kiefel Extrusion of Troisdorf/Germany and DuPont have developed a peelable, surface printable, multi-layer high barrier lidding film, which seals directly and effectively to mono-APET trays, even through fat and meat juices. This substantial progress was made possible by combining Reifenhäuser’s versatile 11/9-channel EVOLUTION barrier blown film technology and a new PET based DuPont™ Appeel® sealant resin. 

Compared to traditional lidding films with an additional LDPE sealing layer, which is co-extruded or laminated to the APET structure, the use of a co-extruded Appeel® sealing layer provides superior packaging properties, including higher fat barrier, perforation resistance, gloss and transparency.


Photo: DuPont

DuPont and Reifenhäuser have developed a cost saving lidding structure with a PET-based Appeel® sealing layer, which directly seals to mono-APET trays. Advantages over traditional lidding films using an LDPE sealing layer include a higher fat barrier, perforation resistance, gloss and transparency. By eliminating the need for an additional polyolefin-based lamination film on the APET tray, the new lidding structure enables savings in raw material costs as well as in ecotax, and a reduction in greenhouse gas emissions.

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%, and the total weight of the tray can be up to 15% 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 Appeel® 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 and thanks to the high versatility of Reifenhäuser’s technology, the new film can also be laminated to a reverse printed OPET layer.

Unlike other lacquers and peel systems, the new Appeel® lidding sealant resin provides a fusion seal to APET, providing outstanding seal integrity even through surface contamination caused by fat or meat juices. This is also true for antifog coated films. In addition, the new lidding film structure makes it possible to incorporate easy-open behaviour at the interface between tie and sealant layer (burst peel). Here, the choice of the specific DuPont™ Bynel® tie resin is key to providing a film with easy-open feature or with a strong seal, depending on the application.

Cost-efficient production of the new multilayer lidding structure has been made possible thanks to the versatility and high precision of Reifenhäuser Kiefel’s EVOLUTION ULTRA RANGE extruders. Developed for easy processing of complex film structures with all kind of resins, they provide outstanding flexibility in terms of choice and amount of high performance polymers including high-barrier grades, adhesives and sealants, so allowing use of the most suitable materials at minimum costs.

Depending on the required film structure, they permit both very high and very low output rates at low melt temperatures. The possibility of combining up to 11 channels enables the production of asymmetric films with minimum curling. Their advanced die head technology with precise individual melt distribution allows for extreme downgauging. The superior flatness of the film provides improved printability and constant performance over its entire area. 

Reifenhäuser Kiefel Extrusion GmbH is 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).

EVOLUTION is filed as registered trademark of Reifenhäuser.
The DuPont Oval, DuPont™ and all products denoted with ® are registered trademarks or trademarks of E. I. du Pont de Nemours and Company or its affiliates.


PIP-Int-2014-01

Contact:
DuPont de Nemours International Sarl. 
Nilgun Turan
Marketing Communications Manager, Europe
Packaging & Industrial Polymers
Phone: +41-22-717-5497, Mobile: +90-530-5669883
Nilgun.Turan@dupont.com

Nilgun Turan | DuPont
Further information:
http://www.dupont.com

Further reports about: DuPont Packaging Polymers emissions materials seals structure temperatures

More articles from Materials Sciences:

nachricht An engineered surface unsticks sticky water droplets
01.09.2015 | Penn State

nachricht New material science research may advance tech tools
01.09.2015 | Louisiana State University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: How wind sculpted Earth's largest dust deposit

China's Loess Plateau was formed by wind alternately depositing dust or removing dust over the last 2.6 million years, according to a new report from University of Arizona geoscientists. The study is the first to explain how the steep-fronted plateau formed.

China's Loess Plateau was formed by wind alternately depositing dust or removing dust over the last 2.6 million years, according to a new report from...

Im Focus: An engineered surface unsticks sticky water droplets

The leaves of the lotus flower, and other natural surfaces that repel water and dirt, have been the model for many types of engineered liquid-repelling surfaces. As slippery as these surfaces are, however, tiny water droplets still stick to them. Now, Penn State researchers have developed nano/micro-textured, highly slippery surfaces able to outperform these naturally inspired coatings, particularly when the water is a vapor or tiny droplets.

Enhancing the mobility of liquid droplets on rough surfaces could improve condensation heat transfer for power-plant heat exchangers, create more efficient...

Im Focus: Increasingly severe disturbances weaken world's temperate forests

Longer, more severe, and hotter droughts and a myriad of other threats, including diseases and more extensive and severe wildfires, are threatening to transform some of the world's temperate forests, a new study published in Science has found. Without informed management, some forests could convert to shrublands or grasslands within the coming decades.

"While we have been trying to manage for resilience of 20th century conditions, we realize now that we must prepare for transformations and attempt to ease...

Im Focus: OU astrophysicist and collaborators find supermassive black holes in quasar nearest Earth

A University of Oklahoma astrophysicist and his Chinese collaborator have found two supermassive black holes in Markarian 231, the nearest quasar to Earth, using observations from NASA's Hubble Space Telescope.

The discovery of two supermassive black holes--one larger one and a second, smaller one--are evidence of a binary black hole and suggests that supermassive...

Im Focus: What would a tsunami in the Mediterranean look like?

A team of European researchers have developed a model to simulate the impact of tsunamis generated by earthquakes and applied it to the Eastern Mediterranean. The results show how tsunami waves could hit and inundate coastal areas in southern Italy and Greece. The study is published today (27 August) in Ocean Science, an open access journal of the European Geosciences Union (EGU).

Though not as frequent as in the Pacific and Indian oceans, tsunamis also occur in the Mediterranean, mainly due to earthquakes generated when the African...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Networking conference in Heidelberg for outstanding mathematicians and computer scientists

20.08.2015 | Event News

Scientists meet in Münster for the world’s largest Chitin und Chitosan Conference

20.08.2015 | Event News

Large agribusiness management strategies

19.08.2015 | Event News

 
Latest News

Tiny Drops of Early Universe 'Perfect' Fluid

02.09.2015 | Physics and Astronomy

Learning from Nature: Genomic database standard alleviates search for novel antibiotics

02.09.2015 | Life Sciences

International research project gets high level of funding

02.09.2015 | Awards Funding

VideoLinks
B2B-VideoLinks
More VideoLinks >>>