MATERIALS | POUCHES IMAGE: FROSCH
Right: Mondi has developed a recyclable stand-up pouch for a German brand of laundry detergent
strength, pack appeal, ease of use and recyclability. The product – dubbed the Wave pouch – is not yet commercial, though the company has been performing test runs on packaging line in order to optimise speed and manufacturability. The pouch is made completely
from PET, including 80% recyclate. The advantages of PET include its recyclability – and the existence of a food-grade recycling system for it. The drinking nozzle is not a sepa- rate part, but is shaped from the film. In addition, PET has high seal strength and a glossy appearance. The company says that the pouch performs well in life cycle analysis (LCA) compared to convention- al pouches – such as having 25% of the water consumption. Overall, the company estimates it has half the environmental impact of a conventional pouch.
Cleaning up Mondi has developed a number of pouches for a number of consumer goods applications. The company offers a range of pouch designs, including standard, shaped and spouted stand-up pouches, as well as Doystyle and retort pouches. These have barrier properties against water vapour, oxygen, grease and mineral oil, while standing out on the shelf due to high quality printing. “All are designed for recycling, or made with
recycled content,” said Thomas Kahl, EcoSolutions project manager at Mondi Consumer Packaging in Austria. For instance, Mondi has worked with German
cleaning products manufacturer Werner & Mertz to develop a recyclable stand-up pouch for its
Frosch-branded laundry deter- gent. The resulting product, called StripPouch, recently earned certification from two independent bodies for being 100% recyclable. In the UK, Mondi worked with
retailer Tesco on a mono-material pouch for dishwasher tablets. With BarrierPack Recyclable – an all-PE film – individual tablets can be wrapped in a water-soluble film instead of OPP, which helps to
reduce waste. And it’s not only cleaning
products. In collaboration with Unilever, Mondi developed a PP mono-material pouch for the Knorr
dry soup range. The solution replaces a multi- material laminate and will be manufactured at Mondi’s Turkish flexible packaging plant in Kalenobel.
Recycling assessment Fabrizio Di Gregorio, technical director at Plastics Recyclers Europe (PRE), explained the RecyClass project to delegates. RecyClass is an initiative that helps packaging manufacturers to improve the recyclability of their products. There are several elements – including a free online tool that assesses the recyclability of a packaging design from high to low. The tool includes specific recommendations on how packaging design can be improved in order to make it compatible with existing regulations. It assesses multiple factors behind the packag-
ing, such as whether it is a mono-material, the use of inks, barriers and mineral fillers – and gives it a ‘class’ rating from A to F. By transposing Design for Recycling guidelines into the tool, the overall recyclability of a package is assessed. A combination of Design for Recycling guide-
each detail matters for unrivalled performance
Only a company who has a constant focus on the productivity of its customers thinks ahead and creates extrusion solutions that leave the rest standing. SML specialises in the development of extrusion lines for film, sheet, coating and lamination as well as multifilament spinning lines.
Extrusion lines – engineered to perform.
www.sml.at
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