Patent ID: 9694552
Date: 2017-07-04
CPC Classifications: B29C,B29D

Claim:
1. A method for molding an annular member including a thick-walled inner peripheral part having a triangular cross-sectional shape and a thin-walled outer peripheral part having a rectangular cross-sectional shape, the method comprising the steps of: extruding, into an annular shape, rubber by a first extruder onto a molding table through an opening portion of a first die, the opening portion of the first die having a shape that is the same as that of the cross-sectional shape of the inner peripheral part, while the molding table is rotated, and molding the inner peripheral part; and extruding, into an annular shape, rubber by a second extruder onto the molding table through an opening portion of a second die, the opening portion of the second die having a shape that is the same as that of the cross-sectional shape of the outer peripheral part, while the molding table is rotated, and molding the outer peripheral part.