The intelligent operation is ensured by microcomputer control and the connected peripheral devices. As a result of this, the set closing parameters are kept at a constant level even under extreme external variation conditions. The high frequency power supply, the control and the induction heating head form a single mechanical unit. The operating parameters may be easily checked and if necessary modified using the liquid crystal display interface and the pushbuttons. The induction controlled flask closure is a reliable, cost-effective technology, that may be used for the airtight, single-opening type of closing of virtually any type of bottle. The heating head warms inductively up the aluminum sandwich foil used for capping the bottle, and melts it onto the flange of the bottle mouth.