A method for forming a composite tread with microchimneys, the method comprising the steps of providing a coextruded strip formed of a first compound and a second compound, wherein the first compound is a tread compound, and the second compound is electrically conductive, and then winding the coextruded strip onto a tire building drum to form a tread.

A method for forming a composite tread, the method comprising the steps of forming a coextruded strip of a first compound and a second compound, wherein the first compound is a tread compound, and the second compound is formed from a high-wear compound, wherein the tread is formed from winding the coextruded strip onto the tire building drum while varying the ratio of the first compound to the second compound.

A method for forming a composite tread, the method comprising the steps of: forming a coextruded strip of a first compound and a second compound, wherein the first compound is a tread compound, and the second compound is formed from a second compound, wherein the tread is formed from winding the coextruded strip onto the tire building drum while varying the ratio of the first compound to the second compound

A method for forming a tire having a composite innerliner is described wherein the method includes the following steps: forming a coextruded strip of a first compound and a second compound, wherein the first compound may be an air impermeable compound, and the second compound is a cross linkable diene rubber compound, winding the coextruded strip onto a tire building drum while varying the ratio of the first compound to the second compound to form an inner liner layer of spirally wound coextruded strips.

A rubber composition comprising a rubber component and 0.3 to 3 parts by mass of a branched alkane having 40 to 70 carbon atoms, 1.2 parts by mass or less of a linear alkane having 45 or more carbon atoms and 0.1 to 100 parts by mass of a hydrocarbon resin having a weight-average molecular weight of 300 to 15,000 based on 100 parts by mass of the rubber component.

The invention relates to a process for manufacturing a tire (1). The process includes the steps a): forming a carcass (3) from at least one first material based on thermoplastic elastomer, b): forming, on the carcass (3), at least bead zones (10) from at least one second material based on thermoplastic elastomer and c): forming, on the assembly obtained during step b), an additional part from at least one third material based on thermoplastic elastomer.

The invention relates to a process for manufacturing a tire (1). The process includes the steps a): forming a carcass (3) from at least one first material based on thermoplastic elastomer, b): forming, on the carcass (3), at least bead zones (10) from at least one second material based on thermoplastic elastomer and c): forming, on the assembly obtained during step b), an additional part from at least one third material based on thermoplastic elastomer.

A sculptured drum for a retread process that has an inner radial section with a central axis that extends in an axial direction. The sculptured drum has a plurality of support members that extend outward from a drum outer surface in a radial direction and that are located outward from the inner radial section in the radial direction. A tread that has a plurality of grooves is supported by the sculptured drum during a brushing process and pass across the sculptured drum such that some but not all of the grooves have one of the support members disposed therein. The support members when disposed within the grooves do not completely fill the grooves, and when disposed within the grooves engage a lower surface of the tread.

A sculptured drum for a retread process that has an inner radial section with a central axis that extends in an axial direction. The sculptured drum has a plurality of support members that extend outward from a drum outer surface in a radial direction and that are located outward from the inner radial section in the radial direction. A tread that has a plurality of grooves is supported by the sculptured drum during a brushing process and pass across the sculptured drum such that some but not all of the grooves have one of the support members disposed therein. The support members when disposed within the grooves do not completely fill the grooves, and when disposed within the grooves engage a lower surface of the tread.

A head (50), for the co-extrusion of a complex rubber profiled element, includes a lower wall (56) of cylindrical profile, a first extrusion unit (B60) having a first extrusion duct (60) divided into various sub-ducts (60-1, 60-2, 60-3, 60-4), a first profiling blade (62) defining a first shaping profile (P62) that is discontinuous, a second extrusion unit (B64) including a second extrusion duct (64) divided into various sub-ducts (64-1, 64-2, 64-3, 64-4), a second profiling blade (66) including at least one tooth (67-1, 67-2, 67-3) situated in the continuation of a divider (72-1, 72-2, 72-3), and this second profiling blade (P66) incorporating at least one third extrusion duct, each outlet of a third extrusion duct closely adjoining a tooth (67-1, 67-2, 67-3) of the second profiling blade (66), and a third profiling blade (74) defining a final shaping profile (P74).