TECHNOLOGY | ACTIVE PACKAGING
a lesser impact on degradation than the exposure temperature and number of extrusions. Roland Schultz, Director Global Marketing at
Albis, says that when analysing the market for active and intelligent packaging it is important to understand that both can be categorised as ‘smart packaging’ markets.
Integrating scavengers into PET bottles or closures can eliminate the use of poten- tially hazard- ous sachets Image: Fraunhofer IVV
storage time at 5 and 23°C and the oxygen absorption capacity of activated MXD6 was at least 76 mg/g. Fraunhofer says the study demonstrated that PET bottles with oxygen scavengers are able to reduce oxygen ingress for several years, even at elevated temperatures. Recycling of blends of polypropylene and an
iron-based oxygen scavenger has also been investigated to determine the influence of multiple extrusions on polymer stability and oxygen absorption capacity. PP blends containing 20 wt% of oxygen scavenger – Shelfplus O2
2710 from
Albis – were extruded up to ten times at two different temperature profiles. The results showed that the absorption capacity at 23°C was reduced by one-third (from 39-48 mg oxygen per one gram scavenger additive after one extrusion to 26-35 mg after ten extrusion cycles). However, the study also showed that the iron-based oxygen scavenger had
Active growth “Active packaging applications, such as humidity or oxygen absorbers, have existed for a number of years and now have a compound annual growth rate (CAGR) of around 5% while the intelligent packaging market is much younger and smaller in volume but has much higher CAGR,” he says. “Examples are RFID tags and freshness indicators. As for any consumer packaging, the main drivers for the smart packaging market are convenience and sustainability, with many sub segments.” Smart packaging solutions can be presented as sustainable options. “Smart packaging can help to lower product loss, especially for foodstuffs, or the carbon footprint of the packaging in many ways. Longer shelf life of food or cosmetics, or the same shelf life without the use of preservatives, can be achieved through oxygen absorbers limiting product waste and therefore the carbon dioxide footprint,” he says. Schultz cites some examples of application areas
for smart packaging where there is a need for more sustainable products, but also a requirement to meet strong demand from brand owners for recyclable packaging. “In intelligent packaging, while RFID tags are ideal for communicating information to consumers about the product and
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