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Bosch Sealed Paper

First paper-only, heat-sealed packaging

Introducing the world’s first sealed paper packaging – enabling production of dust-tight packaging for dry products such as sugar, grains, flour or powders using sustainable mono-material paper, and no polymer components.

Swedish paper specialist, BillerudKorsnäs, contributed its expertise to the optimisation of the mechanical properties of its AxelloZAP paper, while Bosch Packaging Technology has provided the packaging technology.

The paper packaging is produced on a vertical form, fill and seal machine (VFFS) with a so-called ZAP-Module that allows coating with the sealing agent on a minimal surface area, preserving the paper’s mono-material character.

“This revolutionary concept would not have been implemented without the collaborative effort of both companies. Together we have developed a solution that will change the packaging market,” asserts Bosch’s Joachim Dittrich, responsible for the VFFS ZAP portfolio.

Great offer for environmentally-conscious consumers

Compared to conventional paper, AxelloZAP is claimed to be substantially more durable, while retaining its natural paper characteristics and advantages from source to recycling. These sustainable characteristics should add appeal for eco-conscious consumers.

With the AxelloZAP paper, BillerudKorsnäs says it has developed a new, better packaging material which reliably withstands the stronger mechanical requirements in processing.

“The combination of the strength, flexibility and stiffness of AxelloZAP paper fits perfectly with Bosch’s technology,” said Ole Paulussen, sales director at BillerudKorsnäs.

More flexibility for formats and pack styles

Until now, the production of mono-material paper packaging was only possible with glued pre-made bags or formed paper bags on mandrel wheel technology. The VFFS concept, more flexible regarding formats and pack styles and thus popular on the market, so far only allowed bag production using polymer film or fully coated paper.

With the ZAP-Module from Bosch it is now possible to process mono-material paper on VFFS technology with dust-tight sealing.

The secret lies in the characteristics of the AxelloZAP paper, which was specially developed for this application, as well as in the ZAP-Module, which applies a minimal amount of the sealing agent during the packaging process to enable heatsealing of the paper on the VFFS machine.

Revolution in the dry food market

The solution meets the growing demand for sustainable packaging for dry foods such as sugar, flour, grains and powders.

Moreover, the machine is user-friendly and allows versatile packaging styles, including pillow, gusseted and block bottom bags with gable or flat top closure.

“We are positive that our solution, supported by several years of development, not only addresses today’s challenges for our customers but also gives them the possibility to enter completely new markets and areas of application using sustainable packaging,” added Dittrich.

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