A method of manufacturing a tread band includes providing a mold having one or more protrusions extending outward in a first direction away from a bottom surface of the mold. At least a first one of the protrusions includes a tip feature extending outward in the first direction. Rubber material is introduced into the mold. A first surface of the rubber material opposite the bottom surface covers the tip feature. The rubber material is compressed into the mold. The compressed rubber material covers the tip feature. The mold is released from the rubber material to form a tread band. The tread band has one or more grooves in a second surface opposite the first surface. The one or more grooves correspond to the one or more protrusions in the mold. A first groove corresponding to the first protrusion includes a vent corresponding to the tip feature in the mold.

A method of manufacturing a tread band includes providing a mold having one or more protrusions extending outward in a first direction away from a bottom surface of the mold. At least a first one of the protrusions includes a tip feature extending outward in the first direction. Rubber material is introduced into the mold. A first surface of the rubber material opposite the bottom surface covers the tip feature. The rubber material is compressed into the mold. The compressed rubber material covers the tip feature. The mold is released from the rubber material to form a tread band. The tread band has one or more grooves in a second surface opposite the first surface. The one or more grooves correspond to the one or more protrusions in the mold. A first groove corresponding to the first protrusion includes a vent corresponding to the tip feature in the mold.

Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and a protective layer located on a tire outer side of the print layer. The decorative portion further includes an intermediate layer located between the print layer and the protective layer. When a storage modulus of the print layer, a storage modulus of the protective layer, and a storage modulus of the intermediate layer are respectively defined as E1′, E2′, and E3′, the following relational expression is satisfied: E2′>E3′>E1′.

In the production of tyres for vehicle wheels in which at least one colored label (200) is provided on at least one of the sidewalls of the tyre, a green tyre is arranged inside a vulcanization mold comprising a first half-shell (50), a second half-shell opposite to the first half-shell (50) and a crown of circumferential sectors configured to air-tightly couple with the first half-shell (50) and with the second half-shell when the vulcanization mold is closed. Each label (200) comprises a layer of colored cross-linkable elastomeric material. Each label (200) is arranged in a predetermined position on a first support surface (50a) defined in at least one of the aforementioned first and second half-shell. The green tyre is arranged inside the vulcanization mold so that one of the sidewalls of the green tyre rests on such a support surface (50a). The mold is then closed and the co-vulcanization of the green tyre and of the label(s) (200) inside the vulcanization mold starts, holding in position the labels (200) on the first support surface (50a) during at least one initial part of the vulcanization.

In the production of tyres for vehicle wheels in which at least one colored label (200) is provided on at least one of the sidewalls of the tyre, a green tyre is arranged inside a vulcanization mold comprising a first half-shell (50), a second half-shell opposite to the first half-shell (50) and a crown of circumferential sectors configured to air-tightly couple with the first half-shell (50) and with the second half-shell when the vulcanization mold is closed. Each label (200) comprises a layer of colored cross-linkable elastomeric material. Each label (200) is arranged in a predetermined position on a first support surface (50a) defined in at least one of the aforementioned first and second half-shell. The green tyre is arranged inside the vulcanization mold so that one of the sidewalls of the green tyre rests on such a support surface (50a). The mold is then closed and the co-vulcanization of the green tyre and of the label(s) (200) inside the vulcanization mold starts, holding in position the labels (200) on the first support surface (50a) during at least one initial part of the vulcanization.

A tire dressing is provided with a fine polymer-based reflective particles formed form of a blend of anisotropic particles of varying color that introduce an added reflective surface not present in ordinary tire dressings. The use of the fine polymer-based reflective particles enhance gloss, shine, and light reflectivity to the applied surface. The enhanced reflective surface effect is more noticeable during vehicle motion and the tire is rotating, as light is reflected from different reflective particles due to the changing angle of the particles caused by the rotation of the tire. The effects are more subtle than the typical effect of glitter due to the small particle size and the utilization of a mixtures of several types of polymer reflective particles that range from dark to bright and vary in color, and the presence of the high refractive index liquid silicone fluid that results in a brilliant radiant shine.

A tire dressing is provided with a fine polymer-based reflective particles formed form of a blend of anisotropic particles of varying color that introduce an added reflective surface not present in ordinary tire dressings. The use of the fine polymer-based reflective particles enhance gloss, shine, and light reflectivity to the applied surface. The enhanced reflective surface effect is more noticeable during vehicle motion and the tire is rotating, as light is reflected from different reflective particles due to the changing angle of the particles caused by the rotation of the tire. The effects are more subtle than the typical effect of glitter due to the small particle size and the utilization of a mixtures of several types of polymer reflective particles that range from dark to bright and vary in color, and the presence of the high refractive index liquid silicone fluid that results in a brilliant radiant shine.

This tire marking apparatus is a tire marking apparatus for performing marking in a tire. The tire marking apparatus includes a disk part having a central axis that is adjusted substantially perpendicularly to a printing surface of the tire; a plurality of printing parts that are provided in the disk part so as to be capable of moving forward and backward with respect to the printing surface and are arranged around the central axis; and a printing driving unit that moves at least one printing part arranged at a printing position that faces the printing surface of the tire forward.

This tire marking apparatus is a tire marking apparatus for performing marking in a tire. The tire marking apparatus includes a disk part having a central axis that is adjusted substantially perpendicularly to a printing surface of the tire; a plurality of printing parts that are provided in the disk part so as to be capable of moving forward and backward with respect to the printing surface and are arranged around the central axis; and a printing driving unit that moves at least one printing part arranged at a printing position that faces the printing surface of the tire forward.

The present invention relates to an apparatus and to a process for building tyres for vehicle wheels, wherein sidewalls (11) are applied on opposite sides of a carcass sleeve (12) placed on a shaping drum (13). The application of the sidewalls (11) comprises: arranging each sidewall (11) as a ring around application levers (24) of a respective support (18), making an axial appendage (35) of the sidewall (11) protrude axially beyond the free ends (25) of the respective application levers (24); radially opening the free ends (25) of the application levers (24) of each support (18) so as to make the respective sidewall (11) radially expand; axially approaching the free ends (25) of the application levers (24) to the respective half-drum (17) up to engaging the axial appendage (35) with the carcass sleeve (12) and radially opening the free ends (25) of the application levers (24) to adhere the sidewalls against the carcass sleeve (12).