Competences IVV

Fraunhofer Nanotechnology Alliance

  Development of adhesives with high-barrier properties
  using nanoscale hybrid polymers

The manufacture of laminated films with diffusion barrier layers against moisture, oxygen and aromas has up until now involved complex, multilayer laminates. These systems comprise several films and barrier layers which are combined using laminating adhesive and/or via coextrusion.

The objective of this project is to develop an adhesive with improved barrier properties using nanoscale hybrid polymers and/or new nanoscale fillers.

This development should considerably simplify the manufacture of multilayer laminates. The new adhesive takes on the function of the hitherto employed barrier layers and its use will bring material, time and cost savings.

There are potential applications for such an adhesive in food packaging as a favorable alternative to EVOH and inorganic layers applied via vapor deposition. For many technical applications such as insulation panels, encapsulations for flexible solar modules and glass-free encapsulated rigid solar modules, flexible displays and organic emitters, further improvement of the barrier effect could be possible using the adhesive in combination with hitherto conventional layers applied via vapor deposition, without an extra process step being required.

The project consortium consists of 3 Fraunhofer institutes, the Zentrum für Sonnenenergie und Wasserstofftechnik (ZSW) and 7 partners from industry (who are actively engaged in the adhesives, packaging, machinery construction and solar technology sectors).

The Fraunhofer Institute for Process Engineering and Packaging (IVV) is responsible for overall coordination of the project.

At the Fraunhofer IVV development work is being carried out on the application process, in collaboration with packaging manufacturers and a machinery construction company. The suitability of various application methods is being tested on a pilot-plant scale. The barrier properties of the resulting laminated films are being characterized using accredited methods.

Project term:     2008 to 2009
Project funding: VDI/VDE Innovation und Technik GmbH


high-barrier films, developed at the IVV
Figure: high-barrier films, developed at the IVV





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