JP2006240098A5 - - Google Patents

Claims (14)

An unvulcanized tread rubber member is provided on the outer peripheral surface of a band assembly including at least a pair of bead cores, a carcass ply straddling one bead core and the other bead core, and a belt layer provided on the outer peripheral surface of the carcass ply. A method for producing a pneumatic tire for a motorcycle, comprising forming a raw tire by pasting and vulcanizing the raw tire using a vulcanization mold,
The tread is divided into a central region and an end region, and an unvulcanized belt-like rubber is spirally wound in a tire circumferential direction as the tread rubber member of at least the tread surface side outer layer of the end region. A method for manufacturing a pneumatic tire for a motorcycle.   The unvulcanized band-shaped rubber having a width wider than that of the unvulcanized belt-shaped rubber is wound around the tire circumferential direction as the tread rubber member of at least the tread surface side outermost layer in the central region. The manufacturing method of the pneumatic tire for motorcycles of description.   2. The pneumatic tire for a motorcycle according to claim 1, wherein an unvulcanized belt-like rubber is spirally wound in the tire circumferential direction as the tread rubber member of at least the tread surface side outermost layer in the central region. Method.   The method for manufacturing a pneumatic tire for a motorcycle according to any one of claims 1 to 3, wherein the unvulcanized belt-like rubber is overlapped and wound from the outer side in the tire axial direction toward the inner side. .   Affixing the tread rubber member so that a distance from a tire equatorial plane in the tire axial direction of the tread to a boundary surface between the center region and the end region gradually increases outward in the tire radial direction; The method for manufacturing a pneumatic tire for a motorcycle according to any one of claims 1 to 4, wherein the pneumatic tire is a motorcycle.   The motorcycle air according to any one of claims 1 to 5, wherein a strip formed by covering at least one cord with rubber is spirally wound in the tire circumferential direction as the belt layer. A method for manufacturing a tire. The center region is constructed by assembling a finished tire on a regular rim, filling a regular internal pressure, and in a no-load state, the distance in the tire axial direction from the tire equator is x, and the tire equator from the tread tread at the position of the distance x. When the distance in the tire radial direction to the tread surface on the surface is y, the drop rate (y / x × 100) is a region having a maximum of 10 to 35%,
The motorcycle according to any one of claims 1 to 6 , wherein the end region is a region that is on an outer side in the tire axial direction with respect to the center region on both sides of the tire equator plane. A method of manufacturing a pneumatic tire. At least one layer of carcass ply wound around the bead core disposed between the pair of bead portions in a toroidal shape from the inside to the outside, and at least one belt layer positioned radially outward of the carcass ply And a pneumatic tire for a motorcycle having a tread located radially outward of the belt layer,
When the tread is divided into a central region and an end region,
The pneumatic tire for a motorcycle, wherein at least the outermost layer on the tread surface side in the end region is a spiral tread formed by vulcanizing and molding an unvulcanized belt-like rubber spirally in a tire circumferential direction.   9. The motorcycle according to claim 8, wherein at least the outermost layer on the tread surface side in the central region is a spiral tread formed by vulcanizing and molding an unvulcanized belt-like rubber spirally in the tire circumferential direction. Pneumatic tires.   The outermost layer on at least the tread surface side of the central region is a band-wound tread formed by vulcanizing and molding an unvulcanized band-shaped rubber having a width wider than that of the band-shaped rubber in the tire circumferential direction. Item 9. A pneumatic tire for a motorcycle according to Item 8. The automatic spiral tread according to any one of claims 8 to 10 , wherein the spiral tread is formed by wrapping the unvulcanized belt-shaped rubber from the outer side in the tire axial direction toward the inner side. Pneumatic tire for motorcycles.   The boundary surface is inclined in the tire radial cross section so that the distance from the tire equatorial plane in the tire axial direction to the boundary surface between the central region and the end region gradually increases outward in the tire radial direction. The pneumatic tire for a motorcycle according to any one of claims 8 to 11, wherein the pneumatic tire is a motorcycle.   The belt layer according to any one of claims 8 to 12, wherein the belt layer is a spiral belt in which a strip formed by covering at least one cord with rubber is spirally wound in a tire circumferential direction. The pneumatic tire for motorcycles described in 1. The central region is assembled to a normal rim, filled with normal internal pressure, and in a no-load state, the distance in the tire axial direction from the tire equator surface is x, and the tread tread surface at the position of the distance x to the tire equatorial surface When the distance in the tire radial direction to the tread surface is y, the drop rate (y / x × 100) is a region having a maximum of 10 to 35%,
The motorcycle according to any one of claims 8 to 13 , wherein the end region is a region that is on the outer side in the tire axial direction with respect to the center region on both sides of the tire equator plane. Pneumatic tire.