Rubber strip, method for manufacturing tire and tire component member using same, and apparatus therefor

A method for manufacturing a tire component member, comprising:

• building a desired tire component member by helically winding and laminating a rubber strip on a tire component member forming drum;
• moving a rubber strip winder so that the rubber strip winder is being constantly located at a given position with reference to the tire component member forming drum during the winding;
• setting a flattening roll such that, as seen in a plan view of a roller of the flattening roll, an extending direction of the rubber strip, at a point at which the strip is passed between the flattening roll and the tire component member forming drum, is not perpendicular to an axis of rotation of the roller of the flattening roll;
• flattening a projection produced by a part of the rubber strip and another part of the rubber strip overlapping thereon under pressure by the flattening roll, a surface of the roller of the flattening roll being moved so that the roller of the flattening roll is being constantly located at a given position with reference to the tire component member forming drum, the flattening roll moving in a direction opposite to a moving direction of the rubber strip winder which direction is defined during helical winding of the rubber strip on the tire component member forming drum;
• and
• rotationally driving the roller of the flattening roll at a rotational speed different from that of the tire component member forming drum.