This manufacturing method of a pneumatic tire having a tread reinforcing layer reduces tire mass while maintaining the durability performance of the tire. A tread reinforcing layer formation step includes a winding step for winding belt-shape plies around an approximately cylindrical winding surface. The winding step involves: a first winding step in which, with the side edges of the belt-shape plies spaced from one another, said belt-shape plies are spirally wound from a first end located on one side of the tire in the axial direction, to a second end located on the other side of the tire in the axial direction; and a second winding step in which, with the side edges of the belt-shape plies spaced from one another, said belt-shape plies are spirally wound from the second end to the first end in the direction opposite that in the first winding step. A lattice-form tread reinforcing layer is formed that has gaps substantially rhombic in shape and bounded by the belt-shape plies.

A reinforcement annular structure of a tyre being processed is formed by arranging a forming drum externally carrying a deposition surface; arranging an application member supported in thrust relation toward the deposition surface; longitudinally guiding a continuous elongated element toward a point of application between the deposition surface and a work surface presented by the application member; and winding the continuous elongated element circumferentialiy around the deposition surface in order to form coils that are axially side-by-side each other. During winding, the work surface of the application member operates in abutment relation against at least one of the cons previously formed by the continuous elongated element.

A method for manufacturing a motorcycle tire comprises: building a raw tire main body, building a breaker, sticking the breaker, and building a band. The building of the breaker comprises: moving two cylindrical support rings to operating positions, swelling the raw tire main body to have its crown portion protruding from the support rings through a gap therebetween, and winding a breaker ply material on the support rings to form a cylindrical breaker ply whose inner surface is adhered to the raw tire main body. The sticking of the breaker comprises: expanding a profiled deck to swell the raw tire main body into a second swollen state, and turning down both edge portions of the breaker while being supported by the profiled deck. The building of the band comprises: spirally winding a tape on the curved breaker ply while being supported by the profiled deck.

Provided are: a tire including: a tire frame; and a reinforcing metal cord member that is wound at least on the outer circumference of the tire frame, wherein at least a portion of the reinforcing metal cord member is coated with a coating composition via an adhesion layer that contains a polyamide-based adhesive and has a melting point of from 160 C. to 200 C., the coating composition containing at least one thermoplastic material selected from polyamide-based thermoplastic resins having a melting point of from 160 C. to 240 C. and polyamide-based thermoplastic elastomers having a melting point of from 160 C. to 240 C.; and a method of producing the same.

A method for manufacturing a motorcycle tire comprises: building a raw tire main body, building a breaker, sticking the breaker, and building a band. The building of the breaker comprises: moving two cylindrical support rings to operating positions, swelling the raw tire main body to have its crown portion protruding from the support rings through a gap therebetween, and winding a breaker ply material on the support rings to form a cylindrical breaker ply whose inner surface is adhered to the raw tire main body. The sticking of the breaker comprises: expanding a profiled deck to swell the raw tire main body into a second swollen state, and turning down both edge portions of the breaker while being supported by the profiled deck. The building of the band comprises: spirally winding a tape on the curved breaker ply while being supported by the profiled deck.

A method for manufacturing a motorcycle tire includes forming a cylindrical raw tire body including a carcass body including a carcass ply and bead cores on the carcass ply, and forming a cylindrical belt ply wound in a cylindrical shape. The forming of the belt ply includes filling the tire body to expand to first expanded phase, winding a sheet-type belt ply by extending the sheet-type belt ply on bell rings to form the cylindrical belt ply with inner surface bonded to the apex of the tire body, filling the tire body to expand the apex of the tire body along with the belt ply to second expanded phase, increasing diameter of an expandable profile deck to expand the apex of the tire body along with the belt ply to third expanded phase, and winding down edges of the belt ply to bond the belt ply to the tire body.

The provide is an tire and an tire production method for the tire, wherein the carcass ply is comprised of tape-like members arranged in the tire circumferential direction, in which a plurality of carcass cords arranged parallel to each other are coated with rubber; the tape-like member has a tape width of 1 to 10 mm; on the tire equatorial plane, two of the tape-like members adjacent to each other in the tire circumferential direction are butted against each other at tire circumferential ends thereof; and at the end portions of the carcass ply, two of the tape-like members adjacent to each other in the tire circumferential direction overlap each other only at rubber portions thereof.

A tire with a circumferential reinforcement layer formed by spirally winding rubber strips in the same direction from different positions arranged in the width direction of the tire. The rubber strips (12A and 12B) are arranged with spaces in a part or the entirety of the tire in the width direction; among those end portions of the rubber strips, at least medial end portions (12Bs and 12Ae) that are located on the equatorial plane side of the tire are arranged at positions where the medial end portions completely overlap with rib-form land portions (2a) in the width direction of the tire; and the width of the rib-form land portions overlapping with the medial end portions is defined as W and the width of the rubber strips is defined as G, wherein a relationship G<W is satisfied.

A strip rubber adhering method includes: extruding strip rubber of a shape having an apex portion in cross section from an extruder and moving the same forward toward a drum; pressing a surface of the strip rubber on the apex portion side by a pressure bonding roller, adhering the strip rubber to the drum, moving relatively the drum and the extruder with respect to each other in an axial direction of the drum, and winding the strip rubber around the drum in a spiral manner; and exposing the surface of the strip rubber on the apex portion side to wind from a blowing apparatus in the vicinity of a position of adhesion of the strip rubber to the drum and cooling the surface of the strip rubber on the apex portion side.

The strip is formed of a single layer including a first layer arranged in a tire innermost layer or composite layers of the first layer and a second layer disposed adjacently to a carcass ply and made of a thermoplastic elastomer composition. The first layer is a thermoplastic elastomer composition containing a styrene-isobutylene-styrene block copolymer and a tackifier, a butyl-based rubber and a natural rubber. The strip has a strip main body having a thickness (T1) of 0.02 to 1.0 mm and ear portions formed on opposite sides of the strip main body. The ear portions have a thickness (T2) smaller than the thickness (T1) and a width (W2) of 0.5 mm to 5.0 mm.