Disclosed are a tire fiber having high adhesion to other members, a rubber/fiber composite having improved adhesion between rubber and fiber, and a tire having high hydraulic durability. The tire fiber comprises a polyethylene-2,5-furandicarboxylate (PEF) raw yarn, wherein the PEF raw yarn comprises as a raw material PEF having a terminal carboxylic acid amount of 1 to 100 mmol/kg.

A tire comprising a crown reinforcement formed of at least two working crown layers of reinforcing elements. The tire additionally comprises, in each shoulder, at least one end of a layer of reinforcing elements that are mutually parallel in the layer and are oriented circumferentially, said end being axially outside said at least two working crown layers, the reinforcing elements of the carcass reinforcement having a diameter less than 1 mm and being made up of threads with a diameter strictly greater than 0.16 mm, and said reinforcing elements of the carcass reinforcement being advantageously non-wrapped metal cords that return a flow rate of less than 20 cm.sup.3/min in what is referred to as the permeability test.

Flat reinforcer having the shape of a multicomposite strip (R1, R2, R3) defining three main perpendicular directions, the axial direction (X), the transverse direction (Y) and the radial direction (Z), having a width W.sub.R measured along the Y direction of between 2 and 100 mm and having a thickness T.sub.R measured along the Z direction of between 0.1 and 5 mm, the aspect ratio W.sub.R/T.sub.R being greater than 3, this multicomposite strip comprising at least: a plurality of monofilaments (10, 20) made of composite material, orientated along the X direction, comprising filaments of a mineral material (101) embedded in a thermoset resin (102), the glass transition temperature of which, denoted Tg.sub.1, is greater than 70 C.; this plurality of monofilaments (10, 20) being coated in a layer of thermoplastic material (12); all or some of these monofilaments (10, 20) being flat monofilaments, of cross section having a width W.sub.M measured along the Y direction and having a thickness T.sub.M measured along the Z direction, with an aspect ratio W.sub.M/T.sub.M greater than 1.5.

Multilayer laminate comprising such a multicomposite reinforcer. Pneumatic or non-pneumatic tyre reinforced by such a multicomposite reinforcer or multilayer laminate.

At a pneumatic tire (11), in a pneumatic tire in which a reinforcing layer (11) is structured from at least one reinforcing ply (53) in which are embedded plural reinforcing cords (54) that are formed from steel and are inclined with respect to a tire equator S, an inclination angle A of the reinforcing cords (54) with respect to the tire equator S is within a range of 40 to 90, and a compressive rigidity F per 50 mm width of a reinforcing layer (52) in a direction parallel to the reinforcing cords (54) is within a range of 1000 to 2400 N.

Provided are: a tire reinforcement member capable of improving the tire durability than before; and a tire using the same. The present invention provides a tire reinforcement member 1 including: a core material cord layer 2; and a spiral cord layer 3 spirally wound on the core material cord layer 2, wherein cords in the core material cord layer 2 are metal cords 2a having an inclination angle of 40 to 90 with respect to the longitudinal direction of the core material cord layer 2, and reinforcing cords 3a in the spiral cord layer 3 are organic fiber cords having a modulus of not less than 19 GPa.

A pneumatic tire having a carcass and a belt reinforcing structure, the belt reinforcing structure comprising: a zigzag belt reinforcing structure formed of a strip of one or more reinforcement cords, the strip of one or more reinforcement cords being inclined at 5 to 30 degrees relative to the centerplane of the tire extending in alternation to turnaround points at each lateral edge, wherein the zigzag strip of cords may be formed from two different reinforcement cords made of different materials, and the lateral edges of the strip are preferably pointed or triangular in shape.

A pneumatic tire comprises a carcass layer, a belt layer disposed on an outer side of the carcass layer in a tire radial direction, and a tread rubber disposed on the outer side of the belt layer in the tire radial direction. The belt layer formed by laminating an angle belt having a belt angle 45 and 70 in absolute values, a pair of cross belts, having belt angles of 10 and 45 in absolute values and having belt angles of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of 5 with respect to a tire circumferential direction. A tread width TW and a cross-sectional width Wca of the carcass layer have a relationship such that 0.82TW/Wca0.92. A width Ws of the circumferential reinforcing layer and a cross-sectional width Wca of the carcass layer such that 0.60Ws/Wca0.70.

A cord-rubber composite 11 comprises a cord array 12 of parallel steel cords 14, and an unvulcanized topping rubber 13 coating the cord array 12 and having a complex elastic modulus E* of not less than 5 MPa after vulcanization. The code array has a surface area parameter S (mm) of not less than 60 mm. The surface area parameter s (mm) is defined by the following expression: S=DPiE, wherein E is a cord count of the steel cords 14 per 5 cm width of the cord-rubber composite 11 in a direction orthogonal to longitudinal directions of the steel cords, and D is an average outer diameter (mm) of the steel cords per the 5 cm width.

A pneumatic vehicle tire having a carcass with textile carcass strength elements, a belt arranged radially outside the carcass, and a belt bandage ply of a belt bandage arranged radially outside the belt, wherein the belt bandage ply has textile cords as strength elements, which are arranged substantially parallel to one another and are embedded in elastomeric material, wherein the cords each have precisely two yarns, wherein the two yarns are yarns of polyamide 6.6 (PA 6.6), which have the same linear density and are end-twisted together to form the cord.

In a tire having a belt ply that is formed from ply strips arranged at intervals in the tire circumferential direction, in order to prevent deterioration in durability when high modulus organic fibers are used in a band cord, said tire is provided with a belt layer comprising a belt ply, and a band layer comprising a band ply positioned to the outside of the belt layer in the radial direction. The belt ply is formed by a plurality of ply strips, which are narrow and have a prescribed length, arranged side-by-side with intervals therebetween in the tire circumferential direction. The band ply is formed by a ply tape, which is narrow and long, wound spirally in the tire circumferential direction. The band cord comprises a composite cord in which first strands, which comprise high modulus organic fibers, and second strands, which comprise low modulus organic fibers and are narrower than the first strands, are twisted together.