Conference Program - LOPE-C 2011
Conference Program - LOPE-C 2011
Conference Program - LOPE-C 2011
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SCIENTIFIC CONF. | THURSDAY-JUNE 30, <strong>2011</strong><br />
Track 4<br />
Systems and Implementation Issues (02:30 pm - 04:00 pm) | LOCATION HARMONIE D / LEVEL C2<br />
03:00 pm Recyclability Aspects of Smart Labels Placed on Liquid Packaging Board<br />
Mr Klaus Villforth,<br />
TU Darmstadt, PMV, Senior scientist, Germany<br />
The contribution of PMV is focused on the recyclability of printed organic electronics concerning the paper chain. This topic comprises the behaviour of labels in the<br />
repulping process, the separation/deposition of label fragments and peeled off components, as well as the identification of harmful substances.<br />
A new method developed by PMV assesses the recyclability of packaging products. In recent trials, plastic labels with printed organic electronic have been placed on liquid<br />
packaging board with different adhesives. Some adhesives particularly dispersion adhesive release labels due to the rough process conditions of repulping. In this case,<br />
parts of the printed electronics are exposed to the harsh environment. Layers will detach from the label and may contaminate fibre suspension with detrimental substances.<br />
Trials with hot melt adhesive demonstrate that it is possible to retain the label on the coated surface of liquid packaging board without affecting disintegration of the fibre<br />
layer. Thus, smart labels can be efficiently protected against mechanical and chemical impacts. This implies a sufficient bonding of the functional layers. Peel test helps to<br />
find appropriate combinations.<br />
The presentation will show test methods, results of trials in laboratory scale and measures necessary to ensure sustainability in terms of the European Declaration on<br />
Paper Recycling.<br />
Objective of the current research project Polytos is to develop printed organic circuits with integrated sensors capable of recording data such as temperature, humidity or<br />
light exposure. These types of printed organic circuits could be used as printed smart labels in the future.<br />
A smart label for milk in beverage carton shall predict the use by date based on the actual storage temperature. This first basic demonstrator will be a plastic label with<br />
printed organic electronics placed on liquid packaging board.<br />
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