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Mixing sustainability and convenience: Mondi and Baumit launch water soluble bag for dry mix mortar

Packaging Solutions


Mondi is introducing SolmixBag, a water soluble bag for the construction industry.


SolmixBag is a one-ply paper bag created to store and transport dry construction materials such as cement and dry mix mortar products. It is designed to dissolve when getting in contact with water during the mixing process – the fibre of the packaging simply integrates with the product as it is mixed. This eliminates waste, reduces paper waste management costs and minimises dust on the construction site, as the bag is simply placed into the mixer without the necessity to open it up front.


The bag is produced in-house thanks to the company’s integrated value chain: SolmixBag is created from Mondi’s water soluble sack kraft paper and uses 20% less paper than the industry standard two-ply paper bags. The solution is able to run on existing filling machines, and it is available in standard sizes, offering customers a smooth transition from their existing solutions. SolmixBag provides the same strength and shelf life as its predecessors, with good printing results for a quality, stand out appearance on shelf.


The company has worked with longstanding customer Baumit to bring SolmixBag to market for dry mix concrete. The two organisations collaborated closely throughout the product development and are committed to supporting the whole construction industry as it endeavours to reduce waste.


Ferdinand Muck, international key account manager, Mondi, said: ‘We are closely collaborating with our partners in the building material industry to eliminate waste disposal and dust, which benefits both the environment and the workers on site. The launch of SolmixBag with Baumit is an important step to make a real difference to the sustainability of the whole industry.’


Peter Weißmann, head of research and development dry mix mortar, Baumit Group, said: ‘Working closely with Mondi means we have been able to test and trial these bags thoroughly and the results will soon benefit new product groups. The impacts on sustainability are vast. Our customers on building sites love the new technology due to the multiple benefits – no waste and reduced dust as the two most important. It was a pleasure to work with the Mondi team; its packaging expertise enables us to help the construction industry make effective, positive change for the future.’



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