Innovative joining technology for automated butt joining of elastomer-based cavity seals
In automotive engineering, elastomer-based EPDM cavity profiles for sealing passenger areas are state of the art and widely used in industry. In an automated process, cut-to-size or continuous semi-finished products of the EPDM profile are adhesively bonded to doors or bodywork using robot control. Finally, the cavity profile is cut and the two butt ends are joined together. The permanent elasticity of the joining zone as well as an undisturbed sealing process are essential to ensure tightness when the doors are closed.
This project was designed to develop an efficient bonding mechanism for joining ethylene-propylene-diene rubber (EPDM) profiles. Here, material-locking joining technologies using reactive multilayer systems (RMS) and adapted adhesive systems are to be developed which are suitable for butt joints in automated production.