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HYBRIDPRO: combining the best of both worlds

Published by
World Cement,

Mondi launches a bag that offers weather protection and significantly extends the shelf life of its contents: the HYBRIDPRO bag. It is part of Mondi’s next generation of water repellent bags.

The HYBRIDPRO (patent pending) will be marketed under the slogan ‘Made of PaPEr – combining the best of both worlds’ and is a technically demanding combination of paper and plastic and is suitable for many industries and applications – particularly construction materials.

The inner ply is made of 120 g/m2 Mondi Advantage ONE sack kraft paper; the outer ply is a 40 µm-thick layer of high-density polyethylene (HDPE). The HDPE forms a protective layer on the outside of the paper. Other bags also use a combination of paper and plastic, but not in this way.

The combination of paper and plastic provides the advantages of a plastic bag yet fillable on conventional paper bag filling systems. It provides weather protection thanks to the bag’s outer PE barrier layer, allowing genuine outdoor storage for long periods of time and extended storage stability, without the need to for form-fill-seal systems.

The outer plastic HDPE film can be printed in up to eight colours, including on the bottom patches, for a glossy, premium look and the paper ply is available in a bleached or an unbleached version.

With the use of this new bag, building materials, such as gypsum and cement, are protected against direct rain during shipping or onsite, as well as protection against gradual moisture ingress during outdoor storage as a result of the 40 µm thickness of the unperforated HDPE film – in turn extending the shelf life.

With longer shelf life, order sizes can be larger for potential reductions in shipping costs.

The bag allows high-speed filling, with de-aeration twice as fast as with a standard three-ply bag (35 m3/h versus 18 m3/h tested on Mega Gurley equipment at Mondi’s R&D centre BAC in Austria).

Workplaces, such as construction sites, are cleaner with the bag since less of the contents adhere to the outer layer.

The HYBRIDPRO is an eco-friendly solution: the total grammage of material used is less than with standard three-ply designs used for the same purpose. The plastic and paper components are also easy to separate for optimum recyclability.


The HYBRIDPRO is a high-quality packaging solution conceived for high-quality contents. It is particularly suitable for building materials, including gypsum and cement, as well as many other moisture-sensitive products.

The bag is suitable for filling contents at temperatures of up to 90°C.

It was developed alongside Mondi’s showerproof paper SPLASHBAG (launched beginning of 2015) as part of Mondi’s next generation of water-repellent bags.

Edited from press release by Harleigh Hobbs

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