Device for heating a product by transverse flow induction

Inductor intended to heat a flat product by transverse flow induction, said product having an upper face and a lower face, said inductor comprising coils having surfaces which extend over planes which are substantially parallel to each other, and a thickness in a direction perpendicular to these planes, the inductor also comprising a central space between the coils that is intended to receive the product, wherein at least two coils are disposed on a first side of the central space and at least two coils are disposed on a second side of the central space opposite the first, characterized in that on the same side of the central space, the coil closest to the face of the product is spaced apart therefrom by a first distance and the other coils are disposed at a distance from the face of the product that is at least equal to the first distance plus the thickness of the coils arranged between them and the face of the product, and in that the surfaces of the coils at least partially overlap.