The car door has undergone a long period of development: from the simple foil seal of a bodyshell door and the integration of a few mechanical components to multi-unit carriers developed by leading OEMs. The door module is manufactured as a galvanized stamped sheet metal or, increasingly, from fiberglass-reinforced plastic, with recesses for the incorporation of electronic and mechanical units.
The car door is no longer just the barrier that represents a dry seal to protect the interior of the car from the wet exterior. The door module now incorporates various forms of technology and electronics including safety features, infotainment, lighting, and air-conditioning.
Henkel’s Sonderhoff FERMAPOR K31 polyurethane foam gaskets seal the contours of the door modules and any units mounted on them, such as electric window controls, loudspeakers, door locks, etc., and protects them against water and dust.