Patent ID: 7838805
Filing Date: 2010-11-23
Classification: B29B,B29C,H05B

Abstract:
1. A heating device of plastic preforms for the production of plastic objects, comprising: at least one inductor, wherein the inductor is suitable for inducing, on the passage of current therein, a magnetic flow on at least one heat transmission component, in order to transmit by irradiation a predetermined quantity of heat to at least one predetermined portion of at least one preform when inserted in the heating device, wherein the predetermined portion is smaller than the entire preform; wherein the at least one heat transmission component comprises a ring of polygonal section arranged between the inductor and a space provided for the at least one predetermined portion of the preform to be inserted into the heating device; and at least one magnetic flow concentrator having a ring shape surrounding partly said at least one inductor and arranged around said at least one heat transmission component, wherein the ring is held in position by an anchorage system that firmly fixes together the magnetic flow concentrator and the inductor.