A tire includes a central region configured to be mounted to a wheel and a crown region including a circumferential tread and a shear element disposed below the circumferential tread. The shear element includes an upper reinforcement layer, a lower reinforcement layer, and an elastic region disposed between the upper reinforcement layer and the lower reinforcement layer. A radial distance between the upper reinforcement layer and the lower reinforcement layer varies along an axial width of the tire. The tire also includes an intermediate region extending from the central region to the crown region.

Provided is a method for manufacturing a tire using a steel cord which can be manufactured without reducing productivity and can prevent propagation of moisture inside. The method for manufacturing a tire includes a vulcanization step of vulcanizing a green tire provided with a belt having at least one belt layer, in which the belt layer includes a steel cord 10 formed by twisting a steel filament 2 together with a resin filament 1 having a softening point of 125 C. or lower, and the resin filament 1 includes at least an ionomer.

A manufacturing apparatus of a rubber sheet containing a steel cord, including a feeding device which feeds the steel cord while keeping a specified tension; a forming device which winds the steel cord being fed by the feeding device around engagement parts spaced from each other with a predetermined width; and a placement device which places on a rubber sheet member, the steel cord wound around the engagement parts with the predetermined width. The forming device includes forming parts which press bent portions of the steel cord wound around the engagement parts to form a bending shape of the bent portions, and the placement device includes a plurality of retaining parts disposed in two rows spaced apart from each other with the predetermined width to retain the bent portions in a state in which the steel cord having the bending shape is placed on the rubber sheet member.

The working reinforcement (2) of an aircraft tire is made by the zigzag winding of a strip (5) having width W, with a periodic curve (7), corresponding to the mid-line of the strip, forming, with the circumferential direction (XX), a non-zero angle A. The circumferential distance (c) between the extrema (S.sub.51, S.sub.52, S.sub.53) of the respective mid-lines of two consecutive strip portions (51, 52, 53) is equal to the ratio W/sin A. For any set of three consecutive strip portions (51, 52, 53), made up of a first, a second and a third portion, the respective mid-lines of the first and third strip portions (51, 53) intersect at an intersection point (I), axially aligned with the extremum (S.sub.52) of the mid-line of the second strip portion (52) and axially on the inside of said extremum (S.sub.52) at an axial distance (a) at least equal to the width W.

The working reinforcement (2) of an aircraft tire is made by the zigzag winding of a strip (5) having width W, with a periodic curve (7), corresponding to the mid-line of the strip, forming, with the circumferential direction (XX), a non-zero angle A. The circumferential distance (c) between the extrema (S.sub.51, S.sub.52, S.sub.53) of the respective mid-lines of two consecutive strip portions (51, 52, 53) is equal to the ratio W/sin A. For any set of three consecutive strip portions (51, 52, 53), made up of a first, a second and a third portion, the respective mid-lines of the first and third strip portions (51, 53) intersect at an intersection point (I), axially aligned with the extremum (S.sub.52) of the mid-line of the second strip portion (52) and axially on the inside of said extremum (S.sub.52) at an axial distance (a) at least equal to the width W.

A method of using a corrugated zero-degree belt to manufacture a tire. A belt ply structure includes a No. 1 belt ply, No. 2 belt ply, No. 3 belt ply, corrugated zero-degree belt, and shoulder wedge. In a belt ply structure of an all-steel radial tire, a zero-degree belt has a halved density and is wound in two turns, thus a strength problem of a joint portion is solved. The upper and lower ply are arranged in a staggered manner, thereby forming a single belt. The belt ply structure realizes restraining and fastening functions of a zero-degree belt ply while reducing costs and weight of a tire. The entire belt ply is flat and smooth and has consistent thickness. The belt ply structure can improve high-speed performance and abrasion resistance of a tire. Circumferential distribution of framework material is more uniform, thereby enhancing uniformity of the tire and driving comfort.

A method of using a corrugated zero-degree belt to manufacture a tire. A belt ply structure includes a No. 1 belt ply, No. 2 belt ply, No. 3 belt ply, corrugated zero-degree belt, and shoulder wedge. In a belt ply structure of an all-steel radial tire, a zero-degree belt has a halved density and is wound in two turns, thus a strength problem of a joint portion is solved. The upper and lower ply are arranged in a staggered manner, thereby forming a single belt. The belt ply structure realizes restraining and fastening functions of a zero-degree belt ply while reducing costs and weight of a tire. The entire belt ply is flat and smooth and has consistent thickness. The belt ply structure can improve high-speed performance and abrasion resistance of a tire. Circumferential distribution of framework material is more uniform, thereby enhancing uniformity of the tire and driving comfort.

A method for manufacturing a belt-shaped cord member by cutting a rubber topped fabric produced by covering a topping rubber on an interdigitated fabric formed by interweaving many warp textile cords and few wefts to a predetermined width, comprising; an interdigitated fabric forming step of arranging a cord having conductivity for every predetermined number of the many warp textile cords which is then interwoven with the weft yarn, a rubber topped fabric producing step of topping rubber on the front and back surfaces of the interdigitated fabric, and a cutting step of cutting the produced rubber topped fabric by every predetermined number of the textile cords, wherein, in the cutting step, the rubber topped fabric is cut along the textile cord in which a cord having conductivity is arranged, after the position of the textile cords is specified by energizing the rubber topped fabric.

A method for manufacturing a belt-shaped cord member by cutting a rubber topped fabric produced by covering a topping rubber on an interdigitated fabric formed by interweaving many warp textile cords and few wefts to a predetermined width, comprising; an interdigitated fabric forming step of arranging a cord having conductivity for every predetermined number of the many warp textile cords which is then interwoven with the weft yarn, a rubber topped fabric producing step of topping rubber on the front and back surfaces of the interdigitated fabric, and a cutting step of cutting the produced rubber topped fabric by every predetermined number of the textile cords, wherein, in the cutting step, the rubber topped fabric is cut along the textile cord in which a cord having conductivity is arranged, after the position of the textile cords is specified by energizing the rubber topped fabric.

There is provided an apparatus configured to adhere a belt-shaped tire member onto a mold drum including: a feeding device including the belt-shaped tire member arranged so as to be capable of being fed and a transferring and adhering device configured to transfer the belt-shaped tire member from the feeding device side to the mold drum side and adhere the belt-shaped tire member onto the mold drum, wherein the transferring and adhering device includes: a transferring device configured to circulate between the feeding device side and the mold drum side and transfer the belt-shaped tire member sucked on the feeding device side to the mold drum side; and a separating unit configured to separate the transferred belt-shaped tire member on the mold drum side from the transferring device and adhere the belt-shaped tire member onto the mold drum.