The present invention relates to a polyester tire cord made of polyester yarn and having a 5% LASE of 1.2 g/d or more as measured according to ASTM D885 at 80° C., a 5% LASE of 1.0 g/d or more as measured according to ASTM D885 at 120° C., and a toughness retention rate of 65% or more at 80° C. and 120° C. The tire cord of the present invention has a modulus comparable to that of rayon even in a high-temperature environment at 120° C. or higher, and has excellent dimensional stability and heat resistance, and thus it can be advantageously applied to a high-performance tire.

A tire includes a carcass, a tread disposed radially outward of the carcass, a sidewall including a shoulder extends toward the tread, and a reinforcing structure positioned radially between the carcass and the tread. The reinforcing structure includes a plurality of belts extending axially toward the shoulder and an overlapping spiral wound strip positioned at a radially outermost portion of the reinforcing structure. The overlapping spiral wound strip includes a uniform width having groups of four first cords with a single second cord therebetween. The first cords include a hybrid construction and the second cords include a single material construction.

A pneumatic tire includes a ply having a plurality of cords each having an average cord diameter D, and a sidewall rubber having a loss tangent tan δ The plurality of cords each includes a plurality of filaments twisted together, the plurality of filaments each having an outer diameter d. The plurality of cords each has a ratio D/d of the average cord diameter D to the outer diameter d being equal to or more than 28. The ratio D/d and the loss tangent tan δ of the sidewall rubber satisfy the following formula;

(tan δ)/(D/d)*1000≤5.5.

A tire for an agricultural vehicle (1), and in particular the carcass reinforcement (4) thereof, for a tire running at low pressure on loose ground, is to reduce the compaction of the ground and to increase the traction capability by reducing the structural stiffness of the tire. According to the invention, the carcass reinforcement (4) is made up of a single carcass layer (41) having a mean thickness E at most equal to 2 mm and a breaking strength Fr, expressed in daN/cm, that satisfies the relationship:

Fr>=Fs=(Cs*Pmax*10.sup.−3)*((R.sup.2−((R+Rj)/2).sup.2)/2)/Rj, with Fs: reference threshold strength (in daN/cm) Cs: safety factor at least equal to 1, Pmax: recommended maximum inflation pressure (in kPa), R=D/2: outside radius of the tire (in mm), Rj=Dj/2: nominal radius of the rim (in mm).

The present invention relates to a vehicle tire comprising a belt bandage, wherein the belt bandage comprises strength members, wherein the strength members comprise hybrid cords arranged parallel to one another within the ply, and wherein the hybrid cords each contain at least one yarn made of polyethylene terephthalate (PET) and at least one yarn made of polyamide.

According to the invention the PET of the yarn of the hybrid cord of the belt bandage is recycled PET (rPET).

Tire comprising at least one working layer (41). The radially outermost one thereof comprises at least one undulation (412) radially on the outside of the points of the working layer (41) that are in line with the centre of the bottom face (243) of the major groove (24) closest to undulation (412). The undulation (412) of the radially outermost working layer (41) is such that, over at least 10% of the radially outer surface (ROS) of the said working layer (41), the radial distance (do) between the radially outer surface (ROS) and the tread surface (21) is at least 1 mm less than the radial distance (dc) between the radially outer surface (ROS) and the tread surface (21), which is the distance in line with the centre of the bottom face (243) of the major groove (24) closest to the said undulation (412).

A tire comprises a crown reinforcement comprising: a working reinforcement comprising a single working layer and a hoop reinforcement arranged radially outside the working reinforcement and comprising at least one hooping filamentary reinforcing element (170) wound circumferentially helically so as to extend axially from one axial edge to the other axial edge of the hoop reinforcement. The or each hooping filamentary reinforcing element (170) consists of: two multifilament strands (1701, 1702) of aromatic polyamide or aromatic copolyamide and one multifilament strand (1703) of aliphatic polyamide or of polyester, or three polyester multifilament strands, each multifilament strand (1701, 1702, 1703) being wound in a helix around a main axis (W) common to the three multifilament strands (1701, 1702, 1703). The hoop reinforcement has a tangent modulus at 1.3% elongation ranging from 200 to 650 daN/mm.

A tire includes a tread, a crown reinforcement, a carcass reinforcement with at least one ply wound about a pair of bead cores and through two sidewalls of the tire, and a cut/puncture resistant sidewall layer disposed adjacent a part of the carcass reinforcement within one of the sidewalls, the cut/puncture sidewall layer being formed of a plurality of cords, each cord including one nylon cord having S 4-8 tpi (twists per inch), one aramid cord having Z 4-8 tpi, and the nylon cord and the aramid cord being twisted together with S 3-7 tpi.

Provided is an adhesive composition for organic fiber cords containing (A) synthetic rubber latex having unsaturated diene, (B) gelatin, and (C) an aqueous compound having a (thermal dissociative blocked) isocyanate group and containing no resorcin or formaldehyde, which has the following effects: (1) causing little damage to the environment by using no resorcin or formaldehyde, (2) in a process of coating an organic fiber cord with the adhesive composition for organic fiber cords and drying and heat curing, it is possible to suppress the adhesion of the adhesive composition for organic fiber cords to a roller or the like, thereby achieving good operability, and (3) achieving good adhesion between an organic fiber cord and a coated rubber composition.

The present disclosure provides: an adhesive composition capable of realizing good adhesion even when neither resorcin nor formalin is included therein; and a rubber-organic fiber cord composite and a tire, which are excellent in adhesion between rubber and organic fiber cords and make a low impact on the environment. Specifically, the present invention provides an adhesive composition for an organic fiber cord, comprising therein: an epoxy compound (A); a compound (B) having an amide group and an amino group per molecule; and rubber latex (C). Further, the present disclosure provides a rubber-organic fiber cord composite, comprising a rubber member and an organic fiber cord, wherein at least a portion of the organic fiber cord is coated with the adhesive composition described above.