An apparatus of manufacturing a rubber member includes an extruder; a mouthpiece; and a support surface which faces the mouthpiece in an opposed manner. The support surface and the mouthpiece are moved relative to each other thus molding a rubber member on the support surface. The apparatus further includes: a rubber pool portion formed between the mouthpiece and the support surface; and a closing surface having an inclined surface shape and capable of closing a moving-direction front side of the rubber pool portion. A rubber material is ejected from an ejection port in a state where the rubber pool portion is closed by the closing surface, the support surface and the mouthpiece are moved relative to each other after the rubber pool portion is filled with the rubber material, and a lamination starting end of the rubber material is pressed to the closing surface thus molding the lamination starting end into an inclined surface and, thereafter, the closing surface is moved in a direction away from the support surface.

In a method for manufacturing a pneumatic tire, a laminated body is formed of a film containing a thermoplastic resin or elastomer, and rubber sheets laminated on surfaces of the film. A winding starting end of the inner rubber sheet is on a side opposite to a winding direction of the laminated body with respect to an end of the film; an end of the outer rubber sheet at the winding starting end is at the same position as the end of the film or is positioned on a side of the winding direction of the laminated body with respect to the end of the film. An outer surface of the outer rubber sheet at the winding starting end and an inner surface of the inner rubber sheet of a winding finishing end are brought into contact by overlapping and bonding the winding starting end and the winding finishing end.

A pneumatic tire that is vulcanized using a bladder provided with a coating layer formed by a release agent, a noise absorber 6 being fixed on an inner surface of a tread portion 1 along a tire circumferential direction via an adhesive layer 7, and a thickness of the release agent detected by an electron microscope is 0.1 m to 100 m at least in a fixation region for the noise absorber 6.

A tire is configured to be received by a wheel having at least one angled surface. The tire includes a tread portion, a first sidewall, and a second sidewall. The first sidewall has a first outer surface, a first inner surface, and a first projection extending inwardly from the first inner surface. The first projection has a first angled surface configured to engage a first corresponding surface of a wheel. The second sidewall has a second outer surface, a second inner surface, and a second projection extending inwardly from the second inner surface. The second projection has a second angled surface configured to engage a second corresponding surface of the wheel.

Methods for treating a cured inner liner as well as treated, cured inner liners resulting from such methods are disclosed. Also disclosed are tires containing the treated inner liners. The methods include treatment of the lower surface of inner liner surface with a rubber-containing liquid to produce a rubber-containing film thereupon.

A tire maintenance support system includes a wear progress degree acquisition portion that acquires a wear progress degree of each of a tread and a side portion in each mount position, a wear amount calculation portion that calculates a predicted wear amount, which is a wear amount of each of the tread and the side portion in each mount position until maintenance timing when maintenance of the vehicle is performed, based on the acquired wear progress degree, and a rotation plan selection portion that selects at least one rotation plan, which is a plan for switching the tire mounted at the predetermined position into another mount position, among the rotation plans, based on the calculated predicted wear amount.

A post-cure inflation machine for processing a tire may include a tire holder shaft. The tire holder shaft may include a chuck to secure the tire to the tire holder shaft. A hollow passage may be defined in the tire holder shaft. A spray nozzle may be connected to a spray shaft that is telescopically disposed in the hollow passage of the tire holder shaft. The spray nozzle may extend to spray an air barrier material onto the tire.

A tire tread extractor used in the manufacture of treads includes a frame, a first nip roller rotatably associated with the frame, and a second nip roller rotatably associated with the frame. The first and second nip rollers are adapted to engage a tire tread at least partially resident in a mold. A driving mechanism associated with the first and/or second nip rollers operates to impart rotational motion thereto. The frame is configured for longitudinal movement along a substantial portion of a longitudinal length of the mold while maintaining the first and second nip rollers in a spaced relation to the mold.

A method of manufacturing a tire, the method comprising the steps of providing a cured tire subassembly, the subassembly including a first bead and a second bead, a cured carcass layer extending from the first bead to the second bead, and an optional cured innerliner disposed on the carcass layer; and applying an air barrier composition to the cured carcass layer, or to the cured innerliner if present, to form an air barrier layer.

In a method for manufacturing a pneumatic tire, molding of a green tire has an assembly step of bonding an inner liner and an unvulcanized rubber sheet with end portions thereof in a width direction being displaced from each other by 50 mm to 500 mm in the width direction to manufacture a laminate, cutting the laminate to have a constant length corresponding to a width of a drum to manufacture a cut sheet, and a joining step of winding the cut sheet on entire circumference of the drum such that a cut surface thereof extends in a circumferential direction of the drum and the inner liner is disposed on an inner surface side, and joining the end portions of the inner liner and joining the end portions of the unvulcanized rubber sheet such that positions of the joined end portions are displaced by a constant distance.