A manufacturing method includes feeding a master roll 8a from a master roll table 10 to a belt table 14, and cutting the master roll 8a between the master roll table 10 and the belt table 14. In the step of feeding the master roll 8a from the master roll table 10 to the belt table 14, the master roll 8a is fed by holding a front part of the master roll 8a by a first hand 30 and a rear part of the master roll 8a by a second hand 40, and the front part of the master roll 8a is continuously held by the first hand 30 from start to end of the feeding.

A manufacturing device for a pneumatic tire in which a carcass ply includes a pair of ply pieces includes a molding drum, a drum drive device, a first supply device for supplying one of the ply pieces to the molding drum, a second supply device for supplying the other one of the ply pieces to the molding drum, and a control device that controls operation of the drum drive device and the first and second supply devices so that the one and the other one of the ply pieces are simultaneously supplied to the molding drum while the molding drum is rotationally driven, and two joint portions of the one and the other ply pieces are provided at different positions in the tire circumferential direction.

Provided are a pneumatic tire where a band-shaped surface fastener extending in a tire circumferential direction is mounted on a tire inner surface, a cut portion composed of a group of a plurality of notches extending in a width direction of this surface fastener without traversing this surface fastener is formed in this surface fastener repetitively along the tire circumferential direction, the surface fastener is divided into a plurality of components by these notches, and the surface fastener is disposed on the tire inner surface in a state where the cut portion is stretched so the components are continuous in the tire circumferential direction.

The present invention concerns a method of cutting a rubber web by means of ultrasound, in which a sonotrode comes into contact with the rubber web and the rubber web and the sonotrode are moved relative to each other while the sonotrode is excited with an ultrasonic vibration. To provide a method of the kind set forth in the opening part of this specification which allows reliable cutting of a rubber web and at the same time ensures that the wear of the tool and the converter is markedly reduced according to the invention it is proposed that a sonotrode comprising steel, preferably hardened steel, is used.

A pneumatic tire for resonance noise reduction, which includes a plurality of resonance noise-reducing members that are disposed along the circumferential direction of the inner liner of a tire, and are formed to protrude from the inner liner so as to reduce the interference of the resonance noises generated inside the tire. The resonance noise-reducing members are formed at an irregular interval of disposition along the circumferential direction of the inner liner.

The tire of the present disclosure includes an inner surface layer that forms a tire inner surface and is formed of a thermoplastic resin or contains a thermoplastic resin, and a porous body that is partially embedded in the inner surface layer.

An apparatus for building tyres for vehicle wheels are described. A substantially cylindrical carcass sleeve, having at least one carcass ply, includes consecutively adjacent strip-like elements laid one after the other around the circumferential extension of a substantially cylindrical deposition surface. Circumferentially consecutive strip-like elements laid one after the other form overlap zones along respective longitudinal edges superimposed on each other. Each overlap zone has, along a longitudinal extension thereof, terminal sections that are laterally opposite with respect to an intermediate section. The intermediate section of each overlap zone has greater width than the width of the terminal sections.

A manufacturing device includes a belt table situated adjacent to a master roll table; a hand feeding the master roll from the master roll table to the belt table; and a cutting device cutting the master roll between the master roll table and the belt table, wherein the hand includes a first hand which keeps holding a front part of the master roll in a feeding direction of the master roll from start to end of feeding of the master roll and a second hand which holds a rear part trailing the front part in the feeding direction

A process for balancing a rim and tire, which comprises first balancing the rim, then mounting the tire, properly inflating it and balancing a second time to determine the location and weight of balancing required. The tire and rim are then indexed with marks to indicate where the balancing weights should be placed. These indexing marks will be used at the remounting stage to assure proper balancing. The tire is then deflated and removed from the rim and the correct mass rubberized weights are vulcanized to the internal surface of the tire sidewall at the indexing mark and on the opposite sidewall across from the indexing mark. The tire is then installed back on the rim with the indexing marks lined up next to each other. The tire is re-inflated and the balance re-checked with a spin balancing machine.

The invention is directed to a production installation (100) that realizes production of a semi-finished product (50) having at least one unvulcanized elastomeric layer (50a) and a cover layer (50b) assembled therewith. The invention is also directed to a method for producing a semi-finished product (50) for use in tire production.