Oxo-degradable debate | additives feature
effects and no regulated metals. Standard test methods were developed and limits of acceptability defi ned with the stakeholders, in particular with composting experts (do not pollute our compost!), farmers (our fi elds are not landfi lls for plastic waste!), and public authorities (do not create environmental and safety problems!). The harmonized European standard EN 13432 on biodegrad- able and compostable packaging issued in 2000 was the result.
The approach of the oxo-degradables sector to
standardization has been, up to now, almost the opposite. The interest seems focused on the specifi c characteristics of the oxo-materials and on how to show a certain degree of degradation by means of tailor- made test methods. From that, the next step is to jump to conclusions about the environmental suitability of the tested materials. This approach led to the preparation of standards
that, even from the title, show that the interest seems to lie not on the fi nal environment but rather on the materials. They are all exclusively applied to the “oxo-biodegradable” materials. Therefore, they are not suitable for any material, because the interest is not to
The SPI Bioplastics Council says that oxo-degra- dable PE fi lm requires special storage to prevent premature ageing
fi nd materials that, regardless of their nature, are fi t for the purpose (ie to solve an environmental problem), but rather to show that one family of materials (the oxo-biodegradables) is suitable for environmental applications. However, if the environment is to be the focal point, it is important to start from it and not from the prod- ucts. Conditions, biodegradation rates and limits of
Polymers
Conductive Carbon Black • electrical conductivity • easy-dispersion
• high purity For electronic packaging, fuel hoses, flooring, power cables and accessories, conveying belts, ATEX applications.
www.timcal.com
Graphite & Coke • thermal conductivity • electrical conductivity
• lubrication For seals, water-meters, heat sinks, geothermal pipes, LED light sockets, primers for electrostatic painting, gas barrier properties.
16-23 October K 2013, hall 8a/F40
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