The present invention relates to a gas generator (1) for an airbag system in a motor vehicle comprising a housing (4) which is at least partially made of plastic and composed of several parts (2, 3), and a combustion chamber (5) arranged in the housing (4), containing an activation fuel (6). The inventive gas generator is characterized in that the plastic has a melting temperature (Tsch) or a combustion temperature which lies below the activation temperature of the fuel (6) and melts or burns under increased thermal action from outside before the activating temperature of the fuel is reached.
