Abstract: Composite reinforcer (R-2) self-adhesive, by curing, to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example, a polyamide 6,6, covering individually said thread or each thread or collectively several threads; a second layer (22) comprising a functionalized diene elastomer bearing functional groups selected from epoxide, carboxyl, acid anhydride and acid ester groups, for example, an epoxidized natural rubber, covering the first layer (21). Process for manufacturing such a composite reinforcer and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcer.

Abstract: A load-bearing structure for a bearing support intended to be mounted on a rim inside a tire fitted on a vehicle to support the tread of the tire in the event of a loss of inflation pressure is provided. The load-bearing structure includes a base, a crown, and an annular body connecting the base and the crown. The body includes a plurality of partitions distributed regularly circumferentially, extending axially substantially from one side to the other of the body and radially from the base to the crown with a mean orientation relative to the radial direction of between 10 and 50 degrees, in that two circumferentially adjacent partitions exhibit contrary orientations relative to the radial direction and in that two adjacent partitions define with the base and/or the crown cavities in the form of triangles or trapezoids.

Abstract: Composite reinforcer (R-2) capable of adhering directly to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: one or more reinforcing thread(s) (20), in particular a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, in particular a 6,6 polyimide, covering individually said thread or each thread or collectively several threads; a second layer (22) of a composition comprising a poly(p-phenylene ether) (“PPE”) and a functionalized unsaturated thermoplastic stirene (“TPS”) elastomer, the glass transition temperature of which is negative, said elastomer bearing functional groups selected from epoxide, carboxyl, acid anhydride and acid ester groups, in particular an epoxidized SBS elastomer, covering the first layer (21). Process for manufacturing a composite reinforcer and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcer.

Abstract: A pneumatic tyre with a built-in self-sealing layer includes an outer rubbery tread, a carcass reinforcement, a gastight layer located at an inside position relative to the carcass reinforcement, a separable protective layer positioned innermost, and a self-sealing layer adjacent to the separable protective layer and located at an inside position relative to the gastight layer. The separable protective layer is a thermoplastic film that includes at least one fluoropolymer.

Abstract: Composite reinforcement (R-2) capable of adhering directly to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example 6,6 polyamide, covering said thread or said threads; a second layer (22) of a composition comprising an unsaturated thermoplastic stirene (“TPS”) elastomer, the glass transition temperature of which is negative, for example an SB (stirene/butadiene) or SBS (stirene/butadiene/stirene) block copolymer, as well as a poly(p-phenylene ether) (“PPE”), covering the first layer (21). Process for manufacturing such a composite reinforcement and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcement.

Abstract: Pneumatic tyre with built-in self-sealing layer comprising an outer rubbery tread, a carcass reinforcement, a gastight layer positioned on the inside relative to the carcass reinforcement, a protective layer positioned innermost and a self-sealing layer adjacent to the protective layer and positioned on the inside relative to the gastight layer, characterized in that said protective layer is a thermoplastic film comprising a copolymer containing hard blocks and soft blocks corresponding to the formula: -(BR-BS)n- where: BR represents a hard block composed of a polyamide or of a blend of polyamides; BS represents a soft block composed of a polyether, a blend of polyethers or a polyether/polyester copolymer; and n represents the number of (BR-BS) units of said block copolymer; such as, for example, a poly(ether-block-amide) copolymer.

Abstract: Composite reinforcement (R-2) that is self-adhesive by curing to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: at least one reinforcing thread (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example 6,6 polyamide, covering said thread; and a second layer (22) comprising an unsaturated thermoplastic stirene elastomer, the glass transition temperature of which is negative, for example an SBS (stirene-butadiene-stirene) copolymer, covering the first layer (21). Process for manufacturing such a composite reinforcement and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcement.

Abstract: Composite reinforcement (R-2) that is self-adhesive by curing to a diene rubber matrix, which can be used as reinforcing element for a tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example 6,6 polyamide, covering said thread or said threads; and a second layer (22) comprising a functionalized unsaturated thermoplastic stirene elastomer, the glass transition temperature of which is negative, for example an epoxidized SBS elastomer, covering the first layer (21), said elastomer containing functional groups selected from epoxide, carboxyl and acid anhydride or ester groups. Process for manufacturing such a composite reinforcement and rubber article or semi-finished product, especially a tire, incorporating such a composite reinforcement.

Abstract: A pneumatic tire having pairs of shoulder section and bead section shear layers positioned on at least one axial side of the carcass layer. Examples include one or more of the shear layers constituted of an elastomer composition having a modulus of elongation at 10% (MA1O) of no greater than 110% of the lowest MA1O of all elastomer compositions constituting the sidewall components that are positioned outward of an axially-inward side of the carcass layer and/or constituted of a short-fiber reinforced elastomer composition having an MA1O of between 25 MPa and 100 MPa and/or the bead section shear layers constituted of an elastomer composition having an MA1O of no greater than 110% of the highest MA1O of all elastomer compositions constituting the sidewall bead section components. Exemplary shoulder section and bead section shear layers in a pinch shocked region are opposite across an interior of the tire.

Abstract: A load-bearing structure for a bearing support intended to be mounted on a rim inside a tire fitted on a vehicle to support the tread of the tire in the event of a loss of inflation pressure is provided. The load-bearing structure includes a base, a crown, and an annular body connecting the base and the crown. The body includes a plurality of partitions distributed regularly circumferentially, extending axially substantially from one side to the other of the body and radially from the base to the crown with a mean orientation relative to the radial direction of between 10 and 50 degrees, in that two circumferentially adjacent partitions exhibit contrary orientations relative to the radial direction and in that two adjacent partitions define with the base and/or the crown cavities in the form of triangles or trapezoids.