Provided is a pneumatic tire having an innerliner member pasted on a tire inner circumferential surface, the innerliner member being constituted from an at least three-layer structure including a film having a main component of a thermoplastic resin or a thermoplastic elastomer composition containing a blend of a thermoplastic resin and an elastomer, and rubber sheets layered on both sides of the film, the tire comprising a lap splice portion in which tire circumferential direction end portions of the film are overlapped via the rubber sheets. In the lap splice portion, the thickness of the film positioned at least on the tire radial direction inner side decreases toward the tip of the end portion thereof, and this tip bends toward the outer side or the inner side in the tire radial direction, and the tip is covered by the rubber sheets.

The present invention relates to self-supporting tyres for vehicle wheels having sidewall reinforcement inserts (113) with reduced rigidity. These tyres have a good mileage in flat running conditions, greater comfort and significantly reduced rolling resistance compared to known self-supporting tyres, with higher modulus sidewall reinforcement inserts.

The present invention relates to a self-supporting tire for vehicle wheels comprising a carcass structure comprising at least one carcass ply having a plurality of hybrid reinforcing cords (10) each comprising at least two strands (20) twisted to each other with a predetermined stranding pitch (P), wherein each of said at least two strands (20) comprises at least one monofilament textile thread (21) at least partially embedded in the filaments (22a) of at least one multifilament textile yarn (22) and a pair of sidewall reinforcement inserts (113), where at least one of said sidewall reinforcement inserts comprises a vulcanised elastomeric compound which has a dynamic shear modulus value G equal to or less than 1.25 MPa measured at 70° C., 10 Hz, 9% deformation according to the RPA method reported in the present description.

A pneumatic tire having a pair of annular bead areas (12), a pair of sidewalls, and a crown portion wherein a carcass ply (22) wraps around a radial inner side (RSj,2o) of each bead ring (20), for each bead area (12) a first layer of rubber material (30) is arranged radially inward from both the bead ring radial inner side (RSi,2o) and the carcass ply (22) and a second layer of rubber material (40) is arranged radially inward from the first layer of rubber material (30), each of the first layer of rubber material (30) and the second layer of rubber material (40) extending substantially across a full width (W20) of the corresponding bead ring (20), each of the first and second layer of rubber material (30, 40) having a modulus of elongation, where the modulus of elongation of the second layer of rubber material (40) is equal to or greater than substantially 125% of the modulus of elongation of the first layer of rubber material (30).

A run-flat tire includes side reinforcing rubbers provided along tire width direction inner side surfaces of carcass side portions. A first inner liner is provided along a tire radial direction inner side surface of a carcass central portion and tire width direction inner side surfaces of the side reinforcing rubber. Both end portions of the first inner liner run along a contour in a cross-section along a tire rotational axis direction and are respectively formed further toward a tire radial direction outer side than tire radial direction inner side end portions of the side reinforcing rubber. A second inner liner extends along a surface, which is at a side opposite from the carcass central portion, of the first inner liner. Both end portions of the second inner liner are respectively formed further toward a tire radial direction inner side than the both end portions of the first inner liner, along a contour in a cross-section along the tire rotational axis direction.

A pneumatic tire is proposed. The pneumatic tire may include an inner liner configured to maintain a pressure of air filled inside the pneumatic tire, a sealant layer disposed on an inner peripheral surface of the inner liner, and a sound absorbing material disposed adjacent to the sealant layer. The sealant layer may include a first sealant layer formed by a first sealant string adjacent to at least a portion of an inner peripheral surface of the inner liner. The sealant layer may also include a second sealant layer formed by a second sealant string adjacent to at least a portion of the first sealant layer. The second sealant layer may be equal to or smaller, in width, than the first sealant layer in an axial direction of the pneumatic tire. The sound absorbing material may be smaller in width than the first sealant layer in the axial direction.

A pneumatic tire including an innerliner member applied on a tire inner circumferential surface, the innerliner member being constituted from an at least three-layer structure including a film having a main component of a thermoplastic resin or a thermoplastic elastomer containing a blend of a thermoplastic resin and an elastomer, and rubber sheets layered on both sides of the film; and a lap splice portion in which tire circumferential direction end portions of the film are overlapped with the rubber sheets inbetween. The rubber sheet on the tire cavity side of the innerliner member disposed on the tire cavity side in the lap splice portion is formed longer along the tire circumferential length than the film adjacent thereto.

The present invention is a strip of a thermoplastic elastomer composition to be wound spirally on a cylindrical drum to form an inner liner for a tire. The strip is composed of a layer stack of a first layer made of a thermoplastic elastomer composition containing 0.1 part by mass to 50 parts by mass of an organic derivative of clay mineral relative to 100 parts by mass of a styrene-isobutylene-styrene triblock copolymer, and a second layer made of a thermoplastic elastomer composition containing at least one of a styrene-isoprene-styrene triblock copolymer and a styrene-isobutylene diblock copolymer. The strip has a strip main body with a thickness of 0.05 mm to 1.0 mm and ear portions with a thickness thinner than the thickness of the strip main body and a width of 0.5 mm to 5.0 mm disposed on opposite sides thereof.

A tyre comprising an impermeable layer designed to ensure the sealing under pressure of the air contained in the inner cavity of the carcass and a foam material provided on the inside of said inner cavity, wherein the foam material is made up of open cell foam with a cell size or diameter of from 150 to 190 μm and a standard deviation of 5% to 15%.

A barrier layer assembly is useful as a barrier component in articles subjected to repeated deformations. The barrier layer assembly has a support layer and a film layer. The barrier layer assembly has a bi-directionally corrugated surface. The surface may be an external or internal surface and is defined by non-sulcate furrows.