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Food Packages: Safe, Efficient, Smart and Sustainable

Released: 14/02/2017 07:42:00
Read 1879 times

Modern packages think for themselves, remind us, extend shelf life, can be heated at the press of a button and influence our senses with their appearance, odour and feel – and some of them can even speak. What packages in the food sector are capable of today goes far beyond their original purpose of protecting foods.

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Packages have to perform numerous feats simultaneously: meet the needs of marketing and sales, comply with safety and hygiene regulations, and satisfy such consumer requirements as sustainability and easier handling while keeping the cost of production, transport and storage low. Thanks to the very latest machines with highly automated sensor- and microprocessor-controlled drive technology, coupled with innovative materials that can be produced and disposed of sustainably, the packaging industry has succeeded in converting a 6,000-year-old idea into a modern high-tech product.

First and foremost: protection due to packaging
And yet the primary purpose of each package – that of protecting its contents during transport and storage – remains unchanged. Packages prevent contamination and damage and protect foods from harmful environmental influences such as light, oxygen and moisture. They provide protection from spoilage due to microorganisms and prevent the loss of flavour or vitamins.

Up to 1.3 billion tonnes of foods, says the Food and Agriculture Organisation (FAO) of the United Nations, are lost each year worldwide. In some cases, fresh goods spoil during transport, are not consumed in time or are deemed unsaleable because they fall short of the given standards. And often enough, still edible food is discarded by consumers because the sell-by date has expired.

For over six years now, this overall issue has been addressed by the SAVE FOOD initiative of the FAO, the environmental programme of the United Nations Environment Programme (UNEP) and Messe Düsseldorf in cooperation with globally leading companies, organisations and research institutes. Their joint goal is to devise solutions to prevent food loss and wastage along the value chain. This involves making suitable infrastructure available, re-examining and modifying standards for packaging, raising awareness and, last but not least, working on the package itself.

For what is now the third time in succession, the initiative with the international SAVE FOOD congress, which marks the start of interpack in Düsseldorf from 4 to 10 May 2017, is being given a suitable platform and bringing together various stakeholders from business, science, the political sphere and civil society in the fight against food wastage. Within the fair, the special SAVE FOOD exhibition will be held for the second time in the innovationparc, which has been energetically taking up a selected issue from the sector at each interpack since 2008.

Hygiene’s not everything, but food is nothing without hygiene
When it comes to food packaging, hygiene is top priority, and sensitive meat and sausage products are subject to extreme standards of hygiene. Complete high-performance production lines inclusive of meat grinder, portioner and tray-sealing unit focus not only on performance, flexibility and product quality, but also on the interfaces – because these have a huge bearing on productivity.

The responsibility for food safety lies with the manufacturer itself. In-plant hygiene controls are strongly advised, but even more important is the exclusion of possible hygiene traps from the outset. Covering everything from comprehensive hygiene design and effortlessly cleanable components to sterilisation of the ambient air with short-wave UV radiation, highly advanced equipment delivers the highest standards of hygiene.

In the SB sector particularly, the skin pack, a two-component SB package consisting of PP or CPET tray sealed with a skin film, has become increasingly prominent. “It’s possible to extend product shelf life considerably with vacuum skin packaging,” explains Stefan Dangel, Sales and Marketing Manager at Sealpac.

Intelligent packaging
The innovative powers of the packaging industry are remarkable. Anyone investigating the very latest packaging technologies cannot fail to encounter nanotechnology, and printed and organic electronics. Intelligent and smart wrappers that are capable of identifying and affecting the degree of food freshness in a controlled fashion are now anything but utopian.

Active packages control the moisture level, prevent the proliferation of germs and even kill them – by using absorbers, for instance. Iron keeps oxygen-sensitive beverages like beer or juice fresh for longer. Table salt in the package inhibits the formation of condensation and enables mushrooms, for example, that tend to discolour after a short while, to look good for longer. “The idea was to develop a package that can take up and regulate moisture,” says Dr Cornelia Stramm of the Fraunhofer Institute for Process Engineering and Packaging IVV in Freising, explaining the aim of the research project.

Visibly fresh
Whether food is still edible can be rendered visible by the special sensors of modern packages. These react when certain substances or gases are released and indicate this with a change in colour and fluorescence. The state of the food is then evident at a glance. One of the most frequent causes of food spoilage is breaks in the cooling chain. Intelligent time-temperature indicators are capable of indicating such discontinuities, usually with a colour change.

Sustainability as a basic discipline
Consumers expect a great deal of their food packages. Their demands of the packaging industry cover not only safety and hygiene, but also sustainability. Consumers mainly associate sustainability with recycling and disposal. The development of deposit and recycling systems and, no less importantly, clear targets have led to a strong increase in package recycling in the last few years. Recycling is on the advance, particularly in Europe, and all EU states are to recycle half of their domestic waste by 2020.

In the assessment of package sustainability, both the material used and its quantity are important as well as package size in relation to its contents. In the industry, there is a clear trend towards using renewable resources. Used instead of conventional materials with a view to diminishing the carbon footprint, these are often hailed as extra-sustainable. However, studies show that precisely these conventional materials, e.g. classical plastics, yield environmental benefits when a product’s entire life cycle is considered – as a result of efficient recycling systems, for example. Ultimately, what counts as the most sustainable solution calls for a comprehensive consideration of the case in question, taking account of the various factors at all stages in the value chain.

Packaged 4.0
In addition to consumer expectations, the packaging industry is also exposed to the growing requirements of its customers. Responding to the desire for greater flexibility and efficiency, the sector reacts among other things with an intelligent and interlinked factory in which classical mechanical engineering efficiently networks with sensors, software and services.

Industry 4.0 has long become the standard in the food industry and is closely associated with the component industry, which can be seen as blazing the trail of technological progress. In the special show “components – special trade fair by interpack”, highly advanced drive, control and sensor equipment will be exhibited alongside products for industrial image processing, handling technology, industrial software and communication, and complete automation systems for packaging machines.

Modern lines are capable of not only autonomously supplying information on process and system states, but also communicating with each other and independently correcting processes where necessary. “Intelligent products then individually control their own production process. And this is not all: thanks to communication throughout the value chain, a product’s life cycle becomes continuously traceable. Totally new business models are possible,” explains Hartmut Rauen, Deputy Executive Director of Germany’s Mechanical Engineering Industry Association (VDMA).

More info:
www.interpack.com

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