Tuesday, October 02, 2012

Aerated adhesive speeds up processing

For high-volume applications like laminating, efficient processing is especially important. The innovative Aerobond system from Henkel significantly speeds up laminating processes in the paper and woodworking industry while improving their efficiency at the same time.

Together with the Hansa Mixer company from Bremen, Henkel has developed a system solution for the aeration of laminating adhesives that enables clean machining even at high production speeds.

The Aerobond system incorporates a laminating adhesive and the Glue-Mix unit from Hansa, a device designed to match the specially developed Henkel adhesive, which introduces controlled quantities of air into the adhesive and distributes it optimally over the substrate surface. This application considerably increases the volume of the adhesive, so that significantly less adhesive is used for the same laminating area.

Aerated adhesives for best results

The system also has a substantial impact on conditioning times. Conventional adhesive blends typically have a high moisture content, requiring conditioning times of up to 24 hours, which can slow down entire production lines. With Aerobond, the volume of air in the mix reduces the moisture content significantly, cutting lengthy conditioning times to just a few hours while ensuring better bonding.

The process decreases the moisture content over the bonding area, thus improving flatness. The aerated adhesive is better able to compensate for unevenness across the substrate surface. This improves the initial bond strength and minimizes areas with insufficient adhesion.

The Aerobond system is easy to use, offers greater flexibility in production processes, reduces downtimes for cleaning of laminating lines, and allows in-line production. Modern adhesive application units normally use counter-rotating roller systems that apply the adhesive directly to different substrates, such as open or closed flute corrugated board as well as solid board. Printed sheet material is laminated to the substrate in this work step.

Aerobond system exclusively for Henkel customers

The Aerobond system is currently being used globally in sheet-to-sheet lamination, inline lamination and in the wood industry. It is easy to operate, robust and highly reliable. Henkel developed the system jointly with Hansa Mixer and offers it exclusively to its own customers.

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