Sonderhoff DM50x Sealing and Bonding of panel filters

The panel filters are fed to the DM 502 mixing and dosing machine on a conveyor belt. For the dosing application of the polyurethane gel, the 3-axis robot guides the mixing head precisely over the contour of the panel filter. The PU gel is applied fully automatically with high repeat accuracy.

The dosing machine is a 3-component machine and also used to bond the paper pack to the panel filter frame. For the bonding application the second A-component in combination with the same B-component is processed.

Resulting is a PU gel that hardens at room temperature in the groove of the panel filter.

During installation in e. g. an air-conditioning system using the tongue-and-groove principle, the panel filter frame is installed with the tongue of the counterpart immersed in the gel seal. This creates an airtight seal.

The decisive factor is that when the filter frame is removed for maintenance purposes, the place where the tongue was immersed in the gel will reliably close again of its own accord, thanks to the self-healing effect. The filter seat is thus hermetically sealed, and all air flows through the filter without air impurities being able to get past the filter into the conditioned room air.

Henkel can provide you with a perfectly matched system solution consisting of a material and the Sonderhoff dispensing machine together with the desired automation.

Our solutions offer you exactly the level of durability, quality and reliability that your customers expect from your products.