B60C2009/2214

PNEUMATIC VEHICLE TIRE FOR A VEHICLE

The invention relates to a pneumatic vehicle tire for passenger cars comprising a carcass (2), a tread (6) and a belt (7) which has belt plies (7a, 7b) and which is covered radially outwardly by a belt bandage (8) having strengthening elements oriented approximately in the circumferential direction, wherein the belt bandage (8) has at least one belt bandage ply (8a) whichas viewed in the tire cross sectionconsists of three sections, namely a central section (10) and two lateral sections (11, 12), wherein one lateral section (11) is arranged to the left of the central section (10) and one lateral section (12) is arranged to the right of the central section (10) and wherein the strengthening elements of the central section (10) have the construction x1 and wherein the strengthening elements of the two lateral sections (11, 12) have identical cords consisting of at least two twisted-together yarns.

The invention is distinguished by the fact that the two lateral sections (11, 12) are arranged next to the central section (10), that is to say without overlapping with the central section (10), that the density of the strengthening elements in the central section (10) is less than the density of the strengthening elements in the lateral sections (11, 12), and that the end of the lateral sections (13) that points toward the central section (10) in each case has a distance (14) of 5 mm-30 mm, preferably a distance (14) of 5 mm-15 mm, from the outer end of the widest belt ply (15), where the distance (14) is measured in the axial direction (aR).

RESIN-METAL COMPOSITE MEMBER FOR TIRE, METHOD OF MANUFACTURING THE SAME, AND TIRE

A resin-metal composite member for a tire comprises a metal member (27) and a coating resin layer (28) that covers the metal member (27) and contains a resin composition. The resin composition includes a thermoplastic elastomer, at least one additive resin selected from an amorphous resin having an ester bond or a polyester-based thermoplastic resin, and at least one chemical selected from a carbodiimide compound, a polyfunctional epoxy compound, or a polyfunctional amino compound.

IMPROVED ARAMID TEXTILE CORD WITH AN AT LEAST TRIPLE TWIST
20210025084 · 2021-01-28 ·

A cord (30) has a triple twist (T1, T2, T3) and comprises an assembly (25) consisting of N=3 strands (20a, 20b, 20c) twisted together with a twist T3 in a direction D2, each strand consisting of M=2 pre-strands, which are themselves twisted together with a twist T2 (T2a, T2b, T2c) in a direction D1 opposite to D2, each pre-strand itself consisting in a yarn that has been previously twisted about itself with a twist T1 in the direction D1, wherein each yarn consists of elementary monofilaments of aromatic polyamide or aromatic copolyamide. Each yarn has a count varying from 90 to 130 tex.

Pneumatic tire

A pneumatic tire includes a tread portion, sidewall portions, bead portions, and has at least one carcass layer disposed between the pair of bead portions. The ratio SW/OD between the total tire width SW and the tire external diameter OD satisfies the relationship SW/OD0.3. A first region A is defined between a pair of first boundary lines (L1, L1), second regions B are defined between a first boundary line (L1) and a second boundary line (L2), and third regions C are defined on the bead toe side of the second boundary lines (L2). Defining SA, SB, and SC as the cross-sectional area (mm.sup.2) of the first region A to the third region C, and defining the peripheral lengths (mm) of the first region A to third region C along the tire inner surface as a, b, and c, respectively, the relationship 7.5SA/a11.5 is satisfied.

POLYESTER TIRE CORD AND RADIAL TIRE USING SAME
20200369086 · 2020-11-26 ·

The present invention relates to a radial tire having a cap ply manufactured with a polyethylene terephthalate dip cord. The radial tire comprises: a pair of parallel bead cores; at least one radial carcass ply wound around the bead cores; one or more inclined belt layers layered on the outer circumference of the carcass ply; and one or more cap ply layers layered in the circumferential direction of a tire on the outer circumference of the inclined belt layers, wherein the cap ply comprises a dip cord manufactured using a yarn comprising 90 mol % or more of polyethylene terephthalate, and the dip cord has a shrinkage of 3.0-4.0%, a strength of 2.5-3.0 g/d at an elongation of 5%, a breaking strength of 6.5-7.5 g/d, and a dimensional stability index of 5.8-6.5.

TIRE COMPRISING REINFORCING ELEMENTS IN THE FORM OF LAMINATED STRIPS
20200331300 · 2020-10-22 ·

The tire comprises a carcass ply connecting two beads via two sidewalls, the carcass ply being surmounted radially towards the outside of the tire by a crown reinforcing zone which is itself surmounted radially towards the outside of the tire by a tread, the crown reinforcing zone comprising a plurality of reinforcing strips arranged over at least one ply of strips. The strips are arranged so that they are juxtaposed and at an angle less than or equal to 15 with respect to the circumferential direction. Each reinforcing strip is made up of a laminate of at least 3 composite layers, each composite layer containing oriented fibers having a tensile modulus greater than or equal to 55 GPa, which are parallel to one another and coated in a polymer matrix.

TIRE COMPRISING REINFORCING ELEMENTS IN THE FORM OF LAMINATED STRIPS
20200324578 · 2020-10-15 ·

The tire comprises a carcass ply connecting two beads via two sidewalls, the carcass ply being surmounted radially towards the outside of the tire by a crown reinforcing zone which is itself surmounted radially towards the outside of the tire by a tread, the crown reinforcing zone comprising a plurality of reinforcing strips arranged over at least one ply of strips. The strips are arranged so that they are juxtaposed and at an angle less than or equal to 15 with respect to the circumferential direction. Each reinforcing strip is made up of a laminate of at least 3 composite layers, each composite layer containing oriented fibers having a tensile modulus less than or equal to 30 GPa, which are parallel to one another and coated in a polymer matrix.

TIRE COMPRISING AN IMPROVED HOOPING PLY
20200316999 · 2020-10-08 ·

A tire (10) comprises a crown (12) comprising a tread (20), a crown reinforcement (14), a carcass reinforcement (32), two side walls (22), two beads (24), each side wall (22) linking each bead (24) to the crown (12), the crown reinforcement (14) extending in the crown (12) in a circumferential direction (Z) of the tire (10). The textile wire-like hoop reinforcer element (48), the wire-like working reinforcer elements (46) and the wire-like carcass reinforcer elements (44) are arranged so as to define, in projection on the equatorial circumferential plane (E), a triangular mesh. The textile wire-like hoop reinforcer element comprises a core composed of a first strand comprising at least one monofilament, and a layer comprising at least two second strands, each second strand comprising at least one monofilament, each second strand of the layer being helically wound around the core.

TIRE
20200316996 · 2020-10-08 · ·

Provided is a tire having good fuel efficiency that, even though a resin material is used therein, has improved ride comfort and dry handling performance without wet performance deterioration. The tire includes an annular tire frame (10), a reinforcement layer (20) outward of the tire frame (10) in a tire radial direction, and tread rubber (30) outward of the reinforcement layer (20) in the tire radial direction. The reinforcement layer (20) includes a reinforcement member (21) coated with a resin composition containing 50-100 mass % of a resin material. For the tread rubber (30), a storage modulus (E.sub.0 C.) and loss tangent (tan .sub.0 C.) during 1% strain at 0 C. are no greater than 30 MPa and 0.5, respectively, and a value (tan .sub.30 C.-tan .sub.60 C.) obtained by subtracting a loss tangent during 1% strain at 60 C. from a loss tangent during 1% strain at 30 C. is no greater than 0.08.

RADIAL TIRE HAVING AN IMPROVED BELT STRUCTURE
20200298623 · 2020-09-24 ·

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.