Tag Archives: Plant

EU approve smart plant based food packaging

EU Bioplastic packaging project that extends the shelf life of food and informs when it is no longer fit to eat has been given the green light by the EU.

EU

EU launched the project four years ago with the aim of developing plant-based bioplastic packaging that not only extends the shelf life of foods, but also contains a sensor that notifies retailers and consumers of when the food inside is really no longer fit to eat.

The Portuguese-based company Logoplaste, in collaboration with SINTEF and other research partners, has developed a blow-moulded bottle, while the Greek project partner Argo has developed a pot designed to hold seafood such as crabs and prawns. Both types of container are covered with an oxygen-proof exterior coating developed by SINTEF.

Åge Larsen at SINTEF is now ready to present the first demonstration packaging, made of PLA (polyactic acid) and bio-PET (polyethylene terephthalate). Larsen told that this development takes plant-based food packaging a couple of steps further with, “the implementation of the smart element and, in addition, the oxygen-proof exterior coating.”

“The packaging is made of biopolymers to which we have added nanoparticle components. This provides the packaging with new and improved food preservation properties.”

Larsen previously said about the packaging: “It is designed mainly to protect the contents from their surroundings and thus extend shelf life. We achieve this by means of improved oxygen barriers. Standard plastic packaging allows the entry of air which places restrictions on shelf life. Moreover, the new approach considerably reduces the carbon footprint,” Larsen explained.

A three-layer coating has been developed consisting of a cellulose-based film sandwiched by two biodegradable biopolymer layers that serve as oxygen barriers. This can be utilised in the same way as the rigid plastic currently used as food bowls.

The fourth prototype produced as part of this project is a blow-moulded film. This is essentially plastic foil similar to that used to make plastic bags and as oxygen-protective coverings for plates containing food.

The researchers have also developed sensors that can detect, for example, whether the temperature of the food has become too high or if a product has soured.

Larsen added that there will always be an issue regarding how the sensors are incorporated into the product. This must be a decision of the manufacturer. Sensors installed on the inside of the packaging and in contact with the food, such as in bottle caps or corks, will have to be approved by the food hygiene authorities.

Boomerang Plastics recycling plant shuts down

Midlands-based recycling firm Boomerang Plastics recycling plant shut down by parent group Summit Systems.Boomerang Plastics

It brings to an end four years of Boomerang Plastics recycling operations, with all creditors paid and the site being cleared and equipment sold. A spokesperson told 12 staff have been made redundant, two of whom have been transferred to other divisions.

Boomerang Plastics was established in 2011 and expanded rapidly on the back of a contract to process used Muller yogurt pots. It comprised a unique processing line developed to separate the unusual mixture of part-clean plastic pots, yogurt, printed wrappers, card and foil – Warwick University was involved in the initial line design that addressed the issues of multiple materials and colours.

A line was conceived that harnessed cutting edge density separation technology, cold washing, hot washing, chemical separation and colour picking. Specialist software was used to map out the design intricacies of the plant.

It processed 150-200 tonnes of waste per week which enabled circulation back into the packaging chain.

Mike Jordan, managing director of plastics ancillary business Summit Systems and owner of Boomerang Plastics, said the business was plagued with a number of issues ranging from a 2014 arson attack that led to a relocation, a hike in both electricity and insurance prices, the plummeting price of oil and, ultimately, a lack of incentive to recycle in the UK.

Jordan said he would now be focussing on supplying the industry with recycling equipment.

“We are of course disappointed with the outcome, but, we have learnt some valuable lessons and have walked away ensuring all our creditors were paid. We will now be focusing on driving forward our successful new recycling systems business ‘Summit Recycling Systems’ which will design and build MRF and PRF sorting plants.”

The plastic recycling industry is going through tough times, with the low price of recycled material, high insurance and a lack of incentive to recycle in the UK have left many businesses unfeasible.

Globally, the market for plastics recycling is not getting smaller as plastic usage increases. However it is cheaper to recycle internationally where labour costs are low hence the UK market is shrinking.

There is also criticism about the UK’s recycling targets, which some experts claim are not genuinely met as collecting and exporting is not the same as recycling.