Laufenberg and Wevo-Chemie promise to make flat gaskets for fuel cells and electrolysers more cost-effective with a new manufacturing process.
In the new process, specially developed two-component elastomers from Wevo-Chemie are applied in liquid form onto a carrier film. The coating is performed using the roll-to-roll technique from Laufenberg. Curing takes place in a multi-zone tunnel oven, the temperature zones of which can be individually adjusted to the material. Optionally, pre-curing with infrared emitters can be carried out in order to shorten the curing time and remove air inclusions. The production speed can be scaled and ranges from 0.5 to 50 meters per minute.
This process allows the production of pure elastomer gaskets with layer thicknesses from 20 micrometers to 2 millimeters. In combination with carrier films, hybrid gaskets with a total thickness from 70 micrometers to 4 millimeters are possible. The selection of elastomer and carrier film depends on the respective application area. The gaskets are supplied either as roll goods or as precisely cut individual parts.
