Patent ID: 8759408
Filing Date: 2014-06-24
Classification: B29C,B29D,B29L,C08J,Y10T

Abstract:
1. A process for vulcanizing a prepared tire having metal plies and inner and outer rubber components, having a thin layer of crude rubber applied to a carcass, cured within an autoclave with the use of electromagnetic induction to heat straight into an inner metal components of tire plies, specifically applied to retreaded tires; the process comprising the following steps: (1) choosing predetermined suitable inductors according to the characteristics of the prepared tire; (2) fixing the inductors inside the autoclave which is provided with a motor rotated center axle; (3) pitching the suitable frequency and intensity of the inductors according to the kind of crude rubber applied; the crude rubber differing in the tire is either for high or low speed, for a heavy or light truck, for an earthmover or agricultural vehicle; (4) setting up the autoclave by determining the suitable pressure, time and temperature to begin vulcanization process; the process controlled by a power module that delivers the amount of electromagnetic induction necessary to vulcanize the different kinds of materials applied; (5) directly inducing an electromagnetic field on the metal inner ply of the tire, the frequency and intensity of induction causing metal molecules to vibrate thus generating heat on the metal inner ply; (6) the heat generated dissipates through the tire rubber components causing the thin layer of crude rubber applied to the carcass to vulcanize due to its proximity to the ply structure; and (7) vulcanizing all inner and outer components subjected to the heat, ending the retreading process.