Abstract: The present disclosure relates to a method for determining a critical slip distance, CSD, for a sample, the method comprising: providing a force to the sample towards a sliding surface; sliding the sample n times along the sliding surface over a plurality of intervals, the plurality of intervals having different widths w, n being an integer ?1; determining, for each width wi, a respective wear rate m(wi)=?M/(n*wi) of a plurality of wear rates m(w), wherein ?M is a weight difference of the sample after sliding the sample over n intervals of width wi as compared to before the sliding; and determining, based on the plurality of wear rates and the respective widths, the CSD as a width w0, wherein, for any (I).

Abstract: A tread for a pneumatic tyre, the tread comprising a plurality of grooves, the grooves comprising: a groove surface (122); and a plurality of elements (410) spaced from one another in an arrangement on the groove surface (122). Each element (410) has a shape defining a volume, the shape including: a first cross-sectional shape (425) in a plane (420) parallel to the groove surface (122); and a second cross-sectional shape (435) in a plane (430) perpendicular to the groove surface (122). The arrangement comprises a void volume in the spaces between the elements (410) and a void ratio of between 0.5 to 0.75, wherein the void ratio is defined as a ratio of the void volume to the total volume of the elements (410) in the arrangement.

Abstract: The present invention relates to a tread for tyres. Specifically, it refers to a tread that features a 3-level tread geometry that is optimised in such a way as to ensure long-term high performance on wet and/or snow-covered surfaces, whilst maintaining the handling characteristics and braking capacity on dry and/or smooth surfaces under new tyre conditions.

Abstract: A tread comprising a plurality of grooves and manufactured using a rubber compound comprising at least one cross-linkable unsaturated chain polymeric base, a filler, a vulcanization system and a wax comprising at least 50% by weight nonacosandiols. At least part of said grooves has a hydrophobic surface structure comprising a plurality of protruding elements.

Abstract: A tread for a pneumatic tyre, the tread comprising a plurality of grooves, the grooves comprising: a groove surface (122); and a plurality of elements (410) spaced from one another in an arrangement on the groove surface (122). Each element (410) has a shape defining a volume, the shape including: a first cross-sectional shape (425) in a plane (420) parallel to the groove surface (122); and a second cross-sectional shape (435) in a plane (430) perpendicular to the groove surface (122). The arrangement comprises a void volume in the spaces between the elements (410) and a void ratio of between 0.5 to 0.75, wherein the void ratio is defined as a ratio of the void volume to the total volume of the elements (410) in the arrangement.

Abstract: The present invention relates to a tread for tyres. Specifically, it refers to a tread that features a 3-level tread geometry that is optimised in such a way as to ensure long-term high performance on wet and/or snow-covered surfaces, whilst maintaining the handling characteristics and braking capacity on dry and/or smooth surfaces under new tyre conditions.

Abstract: A tread comprising a plurality of grooves and manufactured using a rubber compound comprising at least one cross-linkable unsaturated chain polymeric base, a filler, a vulcanization system and a wax comprising at least 50% by weight nonacosandiols. At least part of said grooves has a hydrophobic surface structure comprising a plurality of protruding elements.

Abstract: Rubber compound for the preparation of a tread portion of a pneumatic tyre comprising at least a cross-linkable unsaturated chain polymer base, a filler and a vulcanization system and a wax composed of at least 50% by weight of nonacosanediols.

Abstract: Pneumatic tyre (1) comprising a carcass ply (11), two ring beads (12), a tread strip (10), a tread belt (15) comprising at least two tread plies (16), an innerliner (2) and an additional functional material layer (4,5) arranged between the innerliner (2) and the inner cavity (17) of the pneumatic tyre (1), wherein between the innerliner (2) and the layer of additional functional material (4,5) a net layer (3) is interposed, which facilitates the removal thereof during disposal at the end-of-life of the pneumatic tyre.

Abstract: Sensor mesh suitable for use in a system for the detection of a puncture in a tyre, said sensor element having a wire structure arranged as a net comprising a first set of wires arranged according to a first direction (A) and a second set of wires arranged according to a second direction (B), in order to form meshes (M) of said net structure, wherein said wires of said first set of wires are of electrically non-conductive material and said wires of said second set of wires are of electrically conductive material, said wires of electrically conductive material being electrically connectable to each other in order to form a circuit configuration (c1, c2, c3, c4, c5), each of said meshes (M) having an inner area (AM) of between 0.25 mm2 and 100 mm2.

Abstract: A pneumatic tire for road vehicles is provided. The pneumatic tire includes a tread portion. The tread portion includes an outer layer and an inner layer. The outer layer is made with a compound A having a dynamic modulus at 30° C. of between 5 and 15 MPa and a tan ? at 60° C. of between 0.400 and 0.100. The inner layer is made with a compound B having a dynamic modulus at 30° C. that is lower than that of said compound A of a value between 0.5 and 10 MPa and a tan ? at 60° C. that is lower than that of said compound A of a value between 0.01 and 0.20. The outer layer and the inner layer are in contact with one another by means of a connection surface, which has a corrugated conformation that is such to provide an alternated plurality of interpenetrating longitudinal portions. Each of said interpenetrating longitudinal portions extending parallel to an axis of rotation X of the pneumatic tire.

Abstract: A pneumatic tyre comprising an impermeable layer that is suitable for guaranteeing the pressure tightness of the air contained within the internal cavity of the casing and a layer of sound-insulating material housed within said internal cavity and made, in turn, with polyols deriving from CNSL.

Abstract: Rubber compound for the preparation of a tread portion of a pneumatic tyre comprising at least a cross-linkable unsaturated chain polymer base, a filler and a vulcanization system and a wax composed of at least 50% by weight of nonacosanediols.

Abstract: A compound for a tyre sealant layer comprising at least one polymer base consisting of an essentially saturated polymer and a filler, which in turn comprises kraft lignin.

Abstract: A rubber mix for tires including at least one cross-linkable polymer base, a reinforcing filler, a vulcanization system, a reinforcing resin and a dithiol chemical according to the formula SHRSH, wherein, in the formula, R is an aliphatic or aromatic group composed of 3 to 12 atoms.

Abstract: Tyre sealant layer made from a rubber compound comprising at least a polymer base and a filler comprising a magnetic material in the form of nanoparticles with dimensions of between 1 and 100 nm.

Abstract: Pneumatic tyre (1) comprising a carcass ply (11), two ring beads (12), a tread strip (10), a tread belt (15) comprising at least two tread plies (16), an innerliner (2) and an additional functional material layer (4,5) arranged between the innerliner (2) and the inner cavity (17) of the pneumatic tyre (1), wherein between the innerliner (2) and the layer of additional functional material (4,5) a net layer (3) is interposed, which facilitates the removal thereof during disposal at the end-of-life of the pneumatic tyre.

Abstract: A method to produce a compound for a tyre sealant layer, comprising a swelling step, during which a crumb rubber is immersed in a process oil chosen among the ones belonging to the families of paraffin process oils, naphthene process oils or natural process oils, so as to obtain a crumb rubber that swells due to the absorption of the process oil; and a following mixing step, during which said swollen crumb rubber is mixed with at least one polymer base consisting of an essentially saturated polymer.

Abstract: A compound for a tyre sealant layer comprising at least one polymer base consisting of an essentially saturated polymer and a filler, which in turn comprises kraft lignin.

Abstract: A method for preparing a rubber compound comprising at least one first mixing step in which at least part of a cross-linkable polymer base is mixed at least with a reactive reinforcing filler, a dendrimer functionalized with polar groups adapted to interact with the reactive reinforcing filler and a nucleophile agent; and a subsequent mixing step in which the compound being prepared is mixed with a vulcanization system.