The manufacturing cost of a hoop reinforcement of a tire for a heavy vehicle of construction plant type is reduced. The crown reinforcement (3) of the tire (1), radially on the inside of a tread (2), comprises a protective reinforcement (6), a working reinforcement (5) and a hoop reinforcement (7). The hoop reinforcement (7) is made up of at least two hooping layers (71, 72), each hooping layer (71, 72) comprising metallic reinforcers that are coated in an elastomeric coating material and form an angle at most equal to 2.5 with the circumferential direction (XX). Each hooping layer (71, 72) is formed by a circumferential winding in a ring, in the circumferential direction (XX), of at least one portion of a ply of metallic reinforcers (81, 82), extending from an initial end (811, 821) to a final end (812, 822), such that the hooping layer (71, 72) comprises at least one discontinuity (91, 92).

A tire includes a tire case (tire frame member) formed in a ring shape, and a belt layer that is provided at an outer periphery of the tire case (tire frame member), and in which a resin-covered cord, which is configured by covering a reinforcing cord with a covering resin is wound onto the outer periphery of the tire case (tire frame member) in a spiral pattern around a tire circumferential direction, and is bonded to the tire case (tire frame member). A chamfered portion is formed at a tire axial direction end portion of a tire radial direction inside face of the resin-covered cord.

A tire includes a ring-shaped tire case, and a belt layer that is provided at an outer periphery of the tire case, and in which a resin-covered cord, which is configured by covering a reinforcing cord with a covering resin is wound onto the outer periphery of the tire case in a spiral pattern around a tire circumferential direction and is bonded to the tire case, with sections of the resin-covered cord that are mutually adjacent in a tire axial direction being bonded to each other. An end portion at one tire axial direction side of a tire radial direction outside face of the resin-covered cord is positioned further toward the one tire axial direction side than an end portion at the one tire axial direction side of a tire radial direction inside face of the resin-covered cord, and an end portion on another tire axial direction side of the outside face is positioned further toward the one tire axial direction side than an end portion at the other tire axial direction side of the inside face.

A tire, including: an annular tire frame member; a belt ply disposed at an outer side of the tire frame member in a tire radial direction, the belt ply including a plurality of reinforcing cords and a coating resin that coats the reinforcing cords, and the belt ply having, at an outer surface of the belt ply in the tire radial direction, a groove along an extension direction of the reinforcing cords; and a rubber member disposed at the outer surface of the belt ply in the tire radial direction.

The pneumatic tire includes a carcass layer, a belt layer disposed outward of the carcass layer in the tire radial direction, and a tread rubber disposed outward of the belt layer in the tire radial direction. Moreover, the belt layer is formed by laminating a pair of cross belts having a belt angle with an absolute value from 10 to 45 both inclusive and mutually opposite signs, and the circumferential reinforcing layer having a belt angle within a range of 5 relative to the tire circumferential direction. Moreover, the distance (Gcc) from the tread profile to the tire inner circumferential surface along the tire equatorial plane and the distance (Gsh) from the tread edge to the tire inner circumferential surface have a relationship satisfying 1.10Gsh/Gcc.

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.

To increase a restraining force to a belt layer and to improve the durability of the tire. A band layer of a spirally wound band-like ply includes: a first ply portion extending from a starting end located between the tire equator and one end in the tire axial direction of a belt layer to the one end in the tire axial direction of the belt layer; a second ply portion extending from the one end in the tire axial direction of the first ply portion to the other end in the tire axial direction of the belt layer; and a third ply portion extending from the other end in the tire axial direction of the second ply portion to a terminal end located between the tire equator and the other end in the tire axial direction of the second ply portion. The band-like ply is continuous from the starting end to the terminal end without interruption.

A pneumatic tire that can achieve sufficient quietness via a band-shaped sound absorbing member attached to a tire inner surface and prevent a reduction in high-speed durability caused by the accumulation of heat in the band-shaped sound absorbing member during high-speed travel. The pneumatic tire includes a band-shaped sound absorbing member (10) bonded along a tire circumferential direction to the tire inner surface in a tread portion (1); at least one full cover layer (8f) covering the entire width of belt layers (7) on the outer circumferential side of the belt layers (7); and a center cover layer (8c) disposed on the outer circumferential side of the full cover layer (8f), the center cover layer (8c) locally covering the tire lateral direction center region of the belt layers (7); a width SW of the band-shaped sound absorbing member (10) and a width BW of the belt layers (7) satisfying a relationship SW/BW=0.3 to 0.8, and a width CW of the center cover layer (8c) and the width SW of the band-shaped sound absorbing member (10) satisfying the relationship CW/SW=0.05 to 0.35.

A tire comprising a tire frame having a circular shape and a metal-resin composite, the metal-resin composite having a structure in which a metal member, an adhesive layer and a resin layer are disposed in this order, the adhesive layer comprising a thermoplastic resin and carbon black, and a content of carbon black in the adhesive layer being greater than 0% by mass and less than 10% by mass with respect to the entire adhesive layer.

A tire comprising a tire frame that comprises a resin material and has a circular shape, and a metal-resin composite, the metal-resin composite having a structure in which a metal member, an adhesive layer and a resin layer are disposed in this order, and the tire satisfying the following conditions (1) to (3): (1) the adhesive layer comprises an acid-modified polyolefin as a first resin and a resin that is different from the an acid-modified polyolefin as a second resin, and a content of the first resin is 50% by mass or more of the entire resin in the adhesive layer; (2) the adhesive layer has a storage elastic modulus at 10 C. of 850 MPa or less; (3) the adhesive layer has a storage elastic modulus at 140 C. of 1.5 MPa or more.