Baumer hhs is launching a hot melt system for applying pressure-sensitive adhesive on corrugated and cardboard surfaces that it says can achieve consistent application quality and a high melt rate.

The COVID 19 pandemic has driven up demand around the globe for e-commerce boxes and other delivery packaging sealed with pressure-sensitive adhesives. Boxes containing purchased items are typically sealed with adhesive strips that are applied by hot melt systems and then covered with silicone tape. These pressure-sensitive adhesive closures securely seal the packaging.

Baumer’s new solution has a melt rate of 100 kg/h with pressure-sensitive adhesives, which the company claims means it offers the highest level of efficiency on the market. Another highlight is the special application head, designed specifically for these applications. In combination with a new volumetric flow controller, Baumer says that it guarantees unique performance at maximum production speeds.

For example, given correct settings and suitable ambient conditions, it can reportedly achieve adhesive application weights of up to 500 g/m2. It is the view of the company that the uniform contact surfaces it produces are the ideal basis for strong and secure glued closures.

Clean cut-off and minimal tailing apparently ensure that no pressure-sensitive adhesive is smeared onto other areas of the packaging or drawn into the machine. The new application head also affords users flexibility in selecting pressure-sensitive adhesives, as it can process a variety of adhesives with a range of high viscosities.

The system includes an energy-efficient melter, a high-performance application head, a controller, a product guide, and a durable mount with precision settings. Packaging producers get a turnkey system for applying pressure-sensitive adhesive to corrugated and cardboard substrates from a single supplier.

When it comes to the silicone strip applicators, Baumer hhs leaves the choice to its customers. A silicone strip applicator supplied by Baumer hhs partner ENPRO is integrated in the hot melt system and can also be used to control it. Alternatively, the system can be integrated with all common controllers from Baumer hhs.

In addition, the hot melt system’s cast tank, which comes with a non-stick coating as standard, reportedly guarantees safety – even at the high melt rate of 100 kg/h.

The durable hot melt system is flexibly configurable. A variety of nozzles are available for the application head. The masks can be adapted to individual needs to produce different application patterns depending on the type of packaging being produced.