Method for managing preforms immobilized in a heating station following an interruption in production

A method for controlling confined preforms (12) which are stopped in a heating station (10) during a production interruption, the heating station (10) comprising:

• a device (14) for conveying preforms (12) comprising individual supports (16) which move in a closed circuit, each individual support (16) being intended to transport a preform (12) with continuous movement along a predetermined transport path (18) from an input location (A) to an output location (B),
• a heating cavity (30) which is bordered by at least one row of transmitters (32) of monochromatic electromagnetic radiation controlled between a switched-off state and a switched-on state, the transport path (18) extending through the heating cavity (30);
• the method comprising a step (E1) of restarting the conveying device (14) for transporting the confined preforms (12) in the direction of the output location (B);
• and
• a step (E3) of heating, by the transmitters (32) of the heating cavity (30), the confined preforms referred to as “cold” preforms which have been stopped before being exposed to the electromagnetic radiation emitted by the transmitters (32).