Patent ID: 8419873

Claim:
A tire building method for spirally winding and laminating a ribbon-shaped rubber strip on an outer peripheral surface of a rotary support body, said ribbon-shaped rubber strip being supplied from a supply device being an extruder that traverses a path relative to the peripheral surface of the rotary support body, in order to form a rubber member for a tire, the method comprising: using a holding roll having a width to enable pressing of a total width of the ribbon-shaped rubber strip and a pair of stitching rolls disposed in parallel fore and aft in a direction of traversing movement, wherein a center line of the ribbon-shaped rubber strip is positioned between said pair of rolls in order to enable each roll of said pair to perform an independent pressing motion, causing the holding roll to press and bond the ribbon-shaped rubber strip in a position, in which the ribbon-shaped rubber strip is spirally wound around the peripheral surface of the rotary support body, and subsequent to the holding roll pressing the ribbon-shaped rubber strip, causing the stitching roll positioned in the fore position to press substantially a half part of the ribbon-shaped rubber strip in an advancing direction to bond the ribbon-shaped rubber strip.