Device and method for inductively heating package sleeves

A device for inductively heating package sleeves, comprising:

• at least one unit for producing an alternating current,
• at least one inductor having at least two effective sections, and
• a holding unit having a front holding area and a rear holding area for mounting the inductor,
• wherein the inductor is connected to the at least one unit for producing the alternating current,
• wherein the holding areas are arranged in such a way that a gap is formed between the front holding area and the rear holding area, a longitudinal direction of the gap corresponds to a conveying direction of the package sleeves,
• wherein the at least two effective sections of the inductor are at least in sections arranged asymmetrically to one another in relation to a centre plane lying in the gap,
• wherein a width of the gap in a transverse direction is in a range of between 1 millimeter and 3 millimeters,
• wherein at least one effective section of the at least two effective sections of the at least one inductor is assigned to the front holding area and at least one effective section of the at least two effective sections of the at least one inductor is assigned to the rear holding area, and
• wherein a height offset is provided between the at least one front effective section and the at least one rear effective section of the at least one inductor, the height offset being in a range of between 0.5 mm and 10 mm.