Abstract: A radial tire, notably for a passenger vehicle or van, has a very thin belt structure comprising a multilayer composite laminate of specific construction, with a first layer of rubber reinforced by circumferential textile reinforcers in the form of monofilaments or assemblies of monofilaments, preferably slightly heat-shrinkable, for example made of nylon or of polyester, this first layer radially (in the direction Z) surmounting two other layers of rubber, reinforced by high-strength steel monofilaments. The mean thickness of rubber, measured in the radial direction (Z), separating a first reinforcer from the second reinforcer which is closest to it, and that separating a second reinforcer from the third reinforcer which is closest to it, are both less than or at most equal to 0.35 mm.

Abstract: A radial tire comprises a multilayer composite laminate (10) comprising at least three superposed layers of reinforcers (110, 120, 130), the reinforcers being unidirectional within each layer and embedded in a thickness of rubber (C1, C2, C3, respectively), with a first layer of rubber (C1) comprising at least one row of heat-shrinkable circumferential textile reinforcers (110), for example made of nylon or polyester. The first layer radially (in the direction Z) surmounts two other layers (C2, C3) comprising metal reinforcers (120, 130) which are crossed from one layer to the next, in the form of steel monofilaments of a diameter between 0.20 mm and 0.50 mm. The reinforcers (110) made of heat-shrinkable textile material are tapes of thickness denoted “T” between 0.1 mm and 1 mm, and of thickness denoted “W” between 2 and 50 mm.

Abstract: The invention relates to a tire (1) comprising a crown reinforcement formed of two working crown layers (41, 43), the calendering layers of which comprise carbon black, and of a layer of circumferential reinforcing elements (42). According to the invention, the reinforcing elements of the working crown layers (41, 43) are metal cords having a diameter of less than 1.3 mm, at least one thread of each metal cord of at least one working crown layer is of at least UHT grade, the tensile elastic modulus at 10% elongation of at least the radially outermost calendering layer of at least the radially outermost working crown layer (43) is less than 8.5 MPa and at least said radially outermost calendering layer of at least the radially outermost working crown layer (43) has a macrodispersion Z value of greater than 85.

Abstract: A radial tire comprises a multilayer composite laminate (10) comprising at least three superposed layers of reinforcers (110, 120, 130), the reinforcers being unidirectional within each layer and embedded in a thickness of rubber (C1, C2, C3, respectively), with a first layer of rubber (C1) comprising at least one row of heat-shrinkable circumferential textile reinforcers (110), for example made of nylon or polyester. The first layer radially (in the direction Z) surmounts two other layers (C2, C3) comprising metal reinforcers (120, 130) which are crossed from one layer to the next, in the form of steel monofilaments of a diameter between 0.20 mm and 0.50 mm. The reinforcers (110) made of heat-shrinkable textile material are tapes of thickness denoted “T” between 0.1 mm and 1 mm, and of thickness denoted “W” between 2 and 50 mm.

Abstract: A radial tire with a lightened belt structure (10) comprises a multilayer composite laminate (10a, 10b, 10c) of specific construction, with a first layer (10a) of rubber (C1) reinforced with preferably weakly heat-shrinkable circumferential textile multifilament fibres (110) twisted individually on themselves with a torsion T greater than 100 turns per meter, for example, made of nylon or of polyester, this first layer radially (in the direction Z) surmounting two other layers (10b, 10c) of rubber (C2, C3, respectively) reinforced with monofilaments (120, 130) of high tensile steel. The first reinforcers have an envelope diameter between 0.30 mm and 0.60 mm and a density, measured in the axial direction Y, between 90 and 150 threads/dm, and the second and third reinforcers each have a diameter between 0.20 mm and 0.50 mm and a density, measured in the axial direction Y, between 100 and 180 threads/dm.

Abstract: A radial tire with a lightened belt structure (10) comprises a multilayer composite laminate (10a, 10b, 10c) of specific construction, with a first layer (10a) of rubber (C1) reinforced with preferably weakly heat-shrinkable circumferential textile monofilaments (110) with a diameter greater than 0.10 mm or assemblies of such monofilaments, for example, made of nylon or of polyester, this first layer radially (in the direction Z) surmounting two other layers (10b, 10c) of rubber (C2, C3, respectively) reinforced with monofilaments (120, 130) of high tensile steel. The first reinforcers have an envelope diameter between 0.20 mm and 1.20 mm and a density, measured in the axial direction Y, between 70 and 130 threads/dm, and the second and third reinforcers each have a diameter between 0.20 mm and 0.50 mm and a density, measured in the axial direction Y, between 100 and 180 threads/dm.

Abstract: A reinforced product (21) comprises: an elastomer matrix (23), several reinforcing elements (44) embedded in the elastomer matrix (23), the reinforcing elements (44) being arranged side by side in a main direction (X1). Each reinforcing element (44) comprises: at least one filamentary element (46) comprising a single monofilament, and at least one sheath coating the filamentary elements (46) and comprising at least one layer of a thermoplastic polymer composition. The ratio R1=ODO/E of the mean minimum thickness ODO of elastomer present on the back of the sheath to the mean thickness E of the reinforced product (21) is less than or equal to 0.17, the mean minimum thickness of elastomer ODO and mean thickness E of the reinforced product (21) being measured in a direction (Y1) substantially perpendicular to the main direction (X1).

Abstract: The tire includes a crown reinforcement which is formed of three working crown layers of reinforcing elements. The reinforcing elements of the two radially outermost working layers are crossed from one layer to the other, making with the circumferential direction angles of between 20 and 45° the circumferential direction, of the reinforcing elements of the radially innermost working layer being between 15 and 20°. The reinforcing elements of the two radially innermost working layers are oriented in the same direction with respect to the circumferential direction. The difference between the angles of the reinforcing elements of the radially innermost working layers is greater than 10°. The widths of the two radially outermost working layers are greater than the 0.7 times the width of the tread, and the width of the radially innermost working layer is strictly less than 0.7 times the width of the tread.

Abstract: Tire comprising a crown reinforcement formed of four working crown layers of reinforcing elements. In a meridian plane, the thickness of the four working crown layers, measured in the equatorial plane, is less than 5 mm, the reinforcing elements of the four working crown layers being individual metal wires of diameter less than 0.50 mm, the distance between the reinforcing elements, measured along the normal to the direction of the mean line of the wire, being strictly less than 1 mm, and the axial width of each of the four working crown layers being greater than 60% of the axial width of the tread.

Abstract: Tire comprising a crown reinforcement formed of three working layers having between ends thereof two layers of rubber compound Ci. Thickness of the three working layers is <5 mm with individual metal wires as reinforcing elements of diameter <0.50 mm and a distance therebetween being strictly <1 mm. The axial width of each working layer is >60% that of the tread. Distance di between two working layers separated by a layer of rubber compound Ci and measured at the end of the axially narrowest working layer in contact therewith is such that 0.5<di<2.5 mm, and, in a meridian plane, the thickness of at least one layer of rubber compound Ci is substantially constant over the axial width between the axially inner end of a layer of rubber compound Ci and the end of the axially narrowest working layer in contact therewith.

Abstract: The invention relates to a tire comprising a crown reinforcement formed of at least two working crown layers of reinforcing elements the ends of which are radially uncoupled by a polymer compound. According to the invention, the reinforcing elements of at least one working crown layer are metal cords with saturated layers, at least one internal layer being sheathed with a layer consisting of a polymer composition such as a rubber composition and in each of the shoulders of the tire, at least the uncoupling polymer compound in contact with the ends of at least two working crown layers exhibits, in the sorption test, a gas content lower than 0.06 m3STP/m3ML.

Abstract: A radial tire includes a crown reinforcement or belt having a lightened belt structure. The lightened belt structure is constructed of a multilayer composite laminate that includes a first layer of rubber that radially surmounts, in a direction Z, two other layers of rubber. The first layer of rubber includes weakly heat-shrinkable textile circumferential reinforcers, for example, made of nylon or polyester. The two other layers of rubber are reinforced with monofilaments of high tensile steel. The first reinforcers have a diameter between 0.40 mm and 0.70 mm and a density between 70 and 130 threads/dm, and the second and third reinforcers have a diameter between 0.20 mm and 0.50 mm and a density between 120 and 180 threads/dm.

Abstract: A radial tire includes a crown reinforcement or belt having a lightened belt structure. The lightened belt structure is constructed of a multilayer composite laminate that includes a first layer of rubber that radially surmounts, in a direction Z, two other layers of rubber. The first layer of rubber is reinforced with first reinforcers, which are circumferential heat-shrinkable polyester textile reinforcers. The two other layers of rubber are reinforced with second and third reinforcers, which are monofilaments of high tensile steel. The first reinforcers have a diameter between 0.40 mm and 0.70 mm and a density between 70 and 130 threads/dm, and the second and third reinforcers have a diameter between 0.20 mm and 0.50 mm and a density between 120 and 180 threads/dm.

Abstract: A radial tire, notably for a passenger vehicle or van, has an improved belt structure comprising a multilayer composite laminate with a first layer of rubber comprising heat-shrinkable circumferential textile reinforcers, in the form of monofilament fibres twisted individually on themselves according to a twist greater than 100 turns per metre; this first layer radially (in the direction Z) surmounts two other layers of rubber, reinforced by reinforcers all or some of which are composite reinforcers made up of steel monofilaments sheathed with a thermoplastic material, the glass transition temperature of which is greater than 20° C. This laminate makes it possible to lighten the belts of tyres by reducing the thickness of the layers of rubber that make up part of their structure, and therefore to reduce the weight and rolling resistance of the tyres, without the risk of direct contact between the reinforcers.

Abstract: A radial tire, notably for a passenger vehicle or van, has an improved belt structure comprising a multilayer composite laminate with a first layer of rubber comprising heat-shrinkable circumferential textile reinforcers, preferably in the form of monofilaments or assemblies of monofilaments; this first layer radially (in the direction Z) surmounts two other layers of rubber, reinforced by reinforcers all or some of which are composite reinforcers made up of steel monofilaments sheathed with a thermoplastic material, the glass transition temperature of which is greater than 20° C. This laminate makes it possible to lighten the belts of tyres by reducing the thickness of the layers of rubber that make up part of their structure, and therefore to reduce the weight and rolling resistance of the tyres, without the risk of direct contact between the reinforcers.

Abstract: A radial tire, notably for a passenger vehicle or van, has a very thin belt structure comprising a multilayer composite laminate of specific construction, with a first layer of rubber reinforced by circumferential textile reinforcers in the form of monofilaments or assemblies of monofilaments, preferably slightly heat-shrinkable, for example made of nylon or of polyester, this first layer radially (in the direction Z) surmounting two other layers of rubber, reinforced by high-strength steel monofilaments. The mean thickness of rubber, measured in the radial direction (Z), separating a first reinforcer from the second reinforcer which is closest to it, and that separating a second reinforcer from the third reinforcer which is closest to it, are both less than or at most equal to 0.35 mm.

Abstract: A radial tire, notably for a passenger vehicle or van, has a lightened belt structure comprising a multilayer composite laminate of specific construction, with a first layer of rubber reinforced by heat-shrinkable circumferential textile reinforcers in the form of monofilaments or assemblies of monofilaments, for example made of nylon or of polyester, this first layer radially (in the direction Z) surmounting two other layers of rubber, reinforced by small steel cords such as, for example, carbon steel cords of construction 1×2.

Abstract: The tire (10) comprises a crown (12) surmounted by a tread (22), two sidewalls (24), two beads (26), each sidewall (24) connecting each bead (26) to the crown (12), a carcass reinforcement (34) anchored in each of the beads (26) and extending in the sidewalls (24) as far as the crown (12). The carcass reinforcement (34) comprises one carcass ply (44) comprising carcass reinforcing elements (46) having a mean laying pitch (P) strictly greater than 1.5 mm. The carcass ply (44) comprises an elastomer matrix (54) in which the carcass reinforcing elements (46) are embedded, each carcass reinforcing element (46) comprising: one filamentary element (56), and one sheath (58) coating the filamentary element (56) and comprising at least one layer (60) of a thermoplastic polymer composition.

Abstract: A tire having a radial carcass reinforcement having at least one layer of metal reinforcing elements. The tire includes a crown reinforcement, itself radially capped by a tread. The tread is connected to two beads by two sidewalls. The reinforcing elements of at least one layer of the carcass reinforcement have at least one filamentary element and at least one sheath covering the at least one filamentary element. The at least one sheath includes at least one layer of a thermoplastic polymer composition. The thickness of rubber compound between the internal surface of the tire cavity and the point of a metal reinforcing element of the carcass reinforcement that is closest to the internal surface of the cavity is less than or equal to 3.8 mm.

Abstract: A radial tire, notably for a passenger vehicle or van, with a lightened belt structure (10) comprises a multilayer composite laminate (10a, 10b, 10c) of specific construction, with a first layer (10a) of rubber (C1) reinforced with preferably weakly heat-shrinkable circumferential textile monofilaments (110), for example, made of nylon or of polyester, this first layer radially (in the direction Z) surmounting two other layers (10b, 10c) of rubber (C2, C3, respectively) reinforced with monofilaments (120, 130) of high tensile steel. This multilayer composite laminate allows the weight and rolling resistance of the tires to be reduced without impairing the cornering stiffness and, therefore, road holding and handling, while at the same time offering equivalent running endurance.