| 摘要 |
The invention relates to a method for heating plastic preforms (10), said plastic preforms (10) being introduced into a resonator (2) and, in said resonator (2), supplied with microwaves so as to heat them in a heating operation, said microwaves being generated by a first microwave source (4). According to the invention, a tuning operation takes place in order to tune the supply to the plastic preforms (10) of the microwaves, and during this tuning operation, a heating power and/or heating energy of the microwaves is, at least intermittently, reduced relative to the heating operation. |
