Provided is a method of manufacturing a hybrid dip cord, which includes: a step of preparing one nylon 6,6 yarn or nylon 6 yarn and one aramid yarn; a step of producing a primarily twisted yarn by applying a twist of 200 to 500 TPM by inputting one nylon 6,6 or nylon 6 yarn longer than the aramid yarn; a set of cabling the primarily twisted yarn as two to apply a twist of 200 to 500 TPM to thereby produce a raw cord; and a step of dipping the raw cord in an adhesive liquid and heat-treat the raw cord, in which the nylon 6,6 or nylon 6 is heat-shrunk so that the length of the nylon 6,6 or the nylon 6 becomes equal to the length of the aramid yarn.

A nylon 6.6 yarn suitable for a tire cord reinforcement for pneumatic tires includes higher than 12,0 g/dtex Tensile Reinforcement Index (TRI) and tenacity between 9,3 g/dtex-10,5 g/dtex, where the TRI is defined as: TRI (g/dtex)=Tenacity (g/dtex) +Stress at 7% Elongation. The nylon 6.6 yarn is suitable for using as tire cord reinforcement in pneumatic tires.

A nylon 6.6 yarn suitable for a tire cord reinforcement for pneumatic tires includes higher than 12,0 g/dtex Tensile Reinforcement Index (TRI) and tenacity between 9,3 g/dtex-10,5 g/dtex, where the TRI is defined as: TRI (g/dtex)=Tenacity (g/dtex) +Stress at 7% Elongation. The nylon 6.6 yarn is suitable for using as tire cord reinforcement in pneumatic tires.

This invention relates to an adhesive composition for a tire cord, a tire cord including an adhesive layer formed from the adhesive composition, and a tire including the tire cord. According to the present disclosure, an environment-friendly adhesive composition for a tire cord that can not only improve adhesive strength between tire rubber and a tire cord, but can also improve strength of a tire cord is provided.

This invention relates to an adhesive composition for a tire cord, a tire cord including an adhesive layer formed from the adhesive composition, and a tire including the tire cord. According to the present disclosure, an environment-friendly adhesive composition for a tire cord that can not only improve adhesive strength between tire rubber and a tire cord, but can also improve strength of a tire cord is provided.

This invention relates to an adhesive composition for a tire cord including: an epoxy compound; latex; an alicyclic polyurethane resin having a weight average molecular weight (Mw) of 250,000 to 350,000; an amine compound; and water, a tire cord including an adhesive layer formed form the adhesive composition, and a tire including the tire cord.

A pneumatic tire includes a pair of bead portions each having a respective bead core therein, a carcass extending between the bead portions and including a carcass ply that includes a main portion extending between the bead cores and a pair of turn-up portions turned up around the bead cores, and a pair of bead reinforcing layers being disposed outward in the tire axial direction of the turn-up portions so as to cover outermost ends in a tire radial direction of the turn-up portions. An outer surface of at least one of the bead portions is provided with a recess row including a plurality of recesses spaced in a tire circumferential direction, and in the at least one of the bead portions, an outermost end of the bead reinforcing layer is located outwardly in the tire radial direction of outermost ends of the plurality of recesses.

The invention relates to a metallic reinforcing cord (10) for tyres for vehicle wheels, comprising: —a) a plurality of metallic wires (11) twisted to one another with a single twisting pitch (P), or—b) a single metallic wire twisted with at least one second metallic wire with a single twisting pitch, or—c) a plurality of first metallic wires twisted to one another with a first twisting pitch to define a first strand of metallic wires and at least one second metallic wire twisted with said first strand of metallic wires with a second twisting pitch equal to or different from the first twisting pitch. The metallic reinforcing cord (10) has a part load elongation greater than or equal to 1%.

The invention relates to a metallic reinforcing cord (10) for tyres for vehicle wheels, comprising: —a) a plurality of metallic wires (11) twisted to one another with a single twisting pitch (P), or—b) a single metallic wire twisted with at least one second metallic wire with a single twisting pitch, or—c) a plurality of first metallic wires twisted to one another with a first twisting pitch to define a first strand of metallic wires and at least one second metallic wire twisted with said first strand of metallic wires with a second twisting pitch equal to or different from the first twisting pitch. The metallic reinforcing cord (10) has a part load elongation greater than or equal to 1%.

The present invention relates to a tire cord having excellent durability while being thin in thickness, a manufacturing method thereof and a tire comprising the same.