Patent ID: 8926774
Filing Date: 2015-01-06
Classification: B29D

Abstract:
1. A method for manufacturing a pneumatic tire including: conveying, to a shaping drum by a supplying conveyor, a sheet lamination body formed by laminating an unvulcanized rubber sheet and a resin film having a gas barrier property, and winding the conveyed sheet lamination body in a position that the resin film is located on the inner side while causing an outer peripheral surface of the shaping drum to retain the conveyed sheet lamination body, wherein, at the time of attaching the resin film on a surface of the unvulcanized rubber sheet, a resin film protrusion portion is formed by making a leading edge of the resin film protrude further toward a downstream side in a conveying direction than a leading edge of the unvulcanized rubber sheet as viewed in the conveying direction, and the outer peripheral surface of the shaping drum is caused to retain in advance the resin film protrusion portion to wind the sheet lamination body on the outer peripheral surface of the shaping drum; wherein, after the outer peripheral surface of the shaping drum is caused to retain the resin film protrusion portion, the supplying conveyor is moved so as to be slightly spaced from the shaping drum while operating so as to apply a constant tension to the resin film protrusion portion, whereby it is possible to adhere to the outer peripheral surface of the shaping drum without causing wrinkles in the resin film protrusion portion; and wherein the protruding length of the resin film protrusion portion is set to ¼ or more of the outer peripheral length of a leading edge roller serving as a transferring portion of the lamination body by the supplying conveyor.