Abstract: A method for the cold retreading of a tire comprising the following steps: a removal step, during which the tread is removed from the tire in order to expose an equatorial surface of a casing of the tire; a deposition step, during which a cushion and a pre-cured tread strip provided with a tread pattern are deposited around the equatorial surface of the casing; and a curing step, wherein the cushion arranged between the casing and the pre-cured tread strip is cured. The cushion is manufactured with a compound comprising 1 to 30 phr of at least one conductive material having a specific surface area which is greater than or equal to 300 m2/g and is chosen among graphite and graphene. The curing step comprises a connection step, wherein said cushion is connected to a heat/power source.

Abstract: A method for the cold retreading of a tire comprising the following steps: a removal step, wherein the tread is removed from the tire, exposing an equatorial surface of a casing of the tire; a deposition step, during which a cushion and a pre-cured tread strip provided with a tread pattern are deposited around the equatorial surface of the casing; and a curing step, wherein the cushion arranged between the casing and the pre-cured tread strip is cured. The cushion is manufactured with a compound comprising at least one conductive material in a quantity ranging from 5% to 20% by weight, having a specific surface area which is greater than or equal to 300 m2/g, and chosen among graphite and graphene. The curing step comprises a connection step, wherein said cushion is connected to a heat/power source.

Abstract: A method for producing asphalt comprising a heat treatment step, wherein the rubber granules deriving from an end-of-life tyre granulation process are subjected to a temperature of between 80 and 300° C., for a period of time necessary in order to obtain rubber granules with a density of between 1.0 and 1.5 g/cm3; and a mixing step wherein the rubber granules from the heat treatment step are mixed with stone aggregate and bitumen in order to obtain asphalt.

Abstract: Method and station for the skiving of the equatorial surface of the casing of a pneumatic tire during a retreading process of the same pneumatic tire; the old worn tread is removed from the pneumatic tire in order to expose the equatorial surface of the casing of the pneumatic tire; the presence of any damage on the equatorial surface of the casing is identified by capturing a three-dimensional profile of the equatorial surface of the casing by means of a laser type profilometer and by analyzing the same three-dimensional profile; and the equatorial surface of the casing is skived where there is damage resulting from the formation of craters on the equatorial surface.

Abstract: A method for the cold retreading of a tyre (1) comprising the following steps: —a removal step, during which the old, worn tread is removed from the tyre in order to expose an equatorial surface (2) of a casing (3) of the tyre (1); —a deposition step, during which a cushion (4) and a pre-cured tread strip (6) provided with a tread pattern are deposited around the equatorial surface (2) of the casing (3); and—a curing step, during which the cushion (4) arranged between the casing (3) and the pre-cured tread strip (6) is cured. The retreading method also comprises a conductive interposition step, during which a conductive adhesive compound (5) is deposited between said cushion (4) and said pre-cured tread strip (6) and/or between said cushion (4) and said casing (3). The conductive adhesive compound (5) comprises at least one conductive material in a quantity ranging from 5 to 20% by weight and chosen among graphene, graphite and a carbon black having a surface area which is greater than or equal to 300 m2/gr.

Abstract: A method for the cold retreading of a tyre (1) comprising the following steps: a removal step, during which the old, worn tread is removed from the tyre in order to expose an equatorial surface (2) of a casing (3) of the tyre (1); a deposition step, during which a cushion (4) and a pre-cured tread strip (6) provided with a tread pattern are deposited around the equatorial surface (2) of the casing (3); and a curing step, during which the cushion (4) arranged between the casing (3) and the pre-cured tread strip (6) is cured. The cushion (4) is manufactured with a compound comprising 1 to 30 phr of at least one conductive material chosen among graphite, graphene and a carbon black having a surface area which is greater than or equal to 300 m2/gr. The curing step comprises a connection step, during which said cushion (4) is connected to a heat or power source (S).

Abstract: Method and station for the skiving of the equatorial surface of the casing of a pneumatic tire during a retreading process of the same pneumatic tire; the old worn tread is removed from the pneumatic tire in order to expose the equatorial surface of the casing of the pneumatic tire; the presence of any damage on the equatorial surface of the casing is identified by capturing a three-dimensional profile of the equatorial surface of the casing by means of a laser type profilometer and by analyzing the same three-dimensional profile; and the equatorial surface of the casing is skived where there is damage resulting from the formation of craters on the equatorial surface.

Abstract: A method and system (1) for retreading a tire (2), whereby the worn tread is removed from the tire (2); a green-rubber cushion (8) is wound about a carcass (6) of the tire (2); a tread strip (9) is wound about the carcass (6) and on top of the green-rubber cushion (8); and the carcass (6), complete with the green-rubber cushion (8) and the tread strip (9), is cured; prior to winding the green-rubber cushion (8) about the carcass (6), the lateral surface (7) of the carcass (6) is heated.

Abstract: A method and system for retreading a tire, whereby: the worn tread is removed from the tire to expose a lateral surface of a casing; the lateral surface of the casing is skived, thus resulting in the formation of holes and/or craters; a three-dimensional profile of the lateral surface is acquired by a three-dimensional scanner; the locations of the holes and/or craters in the lateral surface are determined by analyzing the three-dimensional profile; cement is only applied at the holes and/or craters in the lateral surface, by supplying the locations of the holes and/or craters to an automatic, electronically controlled applicator; the holes and/or craters are filled with green rubber; a green-rubber cushion and a tread strip are wound about the lateral surface of the casing; and the tire is cured.

Abstract: A method and system for retreading a tyre, whereby: the worn tread is removed from the tyre to expose a lateral surface of a casing; the lateral surface of the casing is skived, thus resulting in the formation of holes and/or craters; a three-dimensional profile of the lateral surface is acquired by a three-dimensional scanner; the locations of the holes and/or craters in the lateral surface are determined by analysing the three-dimensional profile; cement is only applied at the holes and/or craters in the lateral surface, by supplying the locations of the holes and/or craters to an automatic, electronically controlled applicator; the holes and/or craters are filled with green rubber; a green-rubber cushion and a tread strip are wound about the lateral surface of the casing; and the tyre is cured.

Abstract: A method and system (1) for producing a tyre (2), whereby a lateral surface (10) of the casing (6) is buffed; an inner surface (19) of a tread strip (13) is buffed; a green-rubber cushion (12) and the tread strip (13) are wound about the lateral surface (10) of the casing (6) to assemble the tyre (2); and the tyre (2) is cured. Buffing of the lateral surface (10) of the casing (6) and/or the inner surface (19) of the tread strip (13) includes: directing a laser beam (B) onto the lateral surface (10) of the casing (6) and/or the inner surface (19) of the tread strip (13) to sublimate part of the existing rubber; and producing a relative movement between the laser beam (B) and the lateral surface (10) of the casing (6) and/or the inner surface (19) of the tread strip (13), so the laser beam (B) sweeps over the surface (10; 19).

Abstract: A method and system (1) for retreading a tyre (2), whereby the worn tread is removed from the tyre (2); a green-rubber cushion (8) is wound about a carcass (6) of the tyre (2); a tread strip (9) is wound about the carcass (6) and on top of the green-rubber cushion (8); and the carcass (6), complete with the green-rubber cushion (8) and the tread strip (9), is cured; prior to winding the green-rubber cushion (8) about the carcass (6), the lateral surface (7) of the carcass (6) is heated.

Abstract: A method and system for producing a precured tread strip, whereby a rubber mixture is extruded into a continuous tread strip, from which the precured tread strip is detached; the bottom surface of the precured tread strip is buffed, and the precured tread strip then inserted inside a bag made of material impermeable to air and which is then sealed; and a vacuum is formed inside the bag just before the bag containing the precured tread strip is sealed.