公开(公告)号：WO2020188502A1

公开(公告)日：2020-09-24

申请号：PCT/IB2020/052479

申请日：2020-03-18

Applicant: BRIDGESTONE EUROPE NV/SA

Inventor： LELIO, Luca ,  LUST, Jeroen ,  VINCENT, Bram

IPC: B29D30/54 ,  B29D30/56 ,  B29D30/52

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 m 2 /gr. The curing step comprises a connection operation, during which said conductive adhesive (5) compound is connected either to a heat source (S) or to a power source (S) so as to transmit the heat to the cushion (4).

公开(公告)号：WO2020188503A1

公开(公告)日：2020-09-24

申请号：PCT/IB2020/052481

申请日：2020-03-18

Applicant: BRIDGESTONE EUROPE NV/SA

Inventor： LELIO, Luca ,  LUST, Jeroen ,  VINCENT, Bram

IPC: B29D30/54 ,  B29D30/56 ,  B29D30/52

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 m 2 /gr. The curing step comprises a connection step, during which said cushion (4) is connected to a heat or power source (S).

公开(公告)号：WO2022096635A1

公开(公告)日：2022-05-12

申请号：PCT/EP2021/080745

申请日：2021-11-05

Applicant: BRIDGESTONE EUROPE NV/SA

Inventor： LELIO, Luca ,  LOSA, Massimo ,  LEANDRI, Pietro

IPC: C10B53/07 ,  C08L17/00 ,  C08L95/00 ,  C10C3/00

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.

公开(公告)号：WO2020250178A1

公开(公告)日：2020-12-17

申请号：PCT/IB2020/055498

申请日：2020-06-11

Applicant: BRIDGESTONE EUROPE NV/SA

Inventor： LELIO, Luca

IPC: G01M17/02

Abstract: A method and a machine for the aerodynamic analysis of the emissions of microplastics generated by the rolling of a pneumatic tyre provided with a wind tunnel having a concentrator duct for directing a flow of air within a test chamber and a diffusor duct wherefrom the airflow from the test chamber is discharged; a test station (13) obtained inside the test chamber and intended to accommodate a pneumatic tyre and having a counter device (14) arranged below the pneumatic tyre, at least one portion whereof reproduces the characteristics of asphalt and whereupon the pneumatic tyre runs in order to simulate rolling upon a road pavement; and means that are suitable for detecting and/or collecting the microplastics generated by the rolling of the pneumatic tyre upon the counter device (14) during a test step.

公开(公告)号：WO2018127416A1

公开(公告)日：2018-07-12

申请号：PCT/EP2017/083780

申请日：2017-12-20

Applicant: BRIDGESTONE EUROPE NV/SA

Inventor： LELIO, Luca

IPC: B29D30/56 ,  B29D30/68

Abstract: Pneumatic tyre (2) cold retreading method and plant (1); the old worn tread strip is removed from the pneumatic tyre (2) in order to expose a equatorial surface (4) of a casing (5) of the pneumatic tyre (2); the equatorial surface (4) of the casing (5) is skived in order to remove any local damage; a green rubber cushion (8) and a pre-vulcanized tread strip (9) without a pattern are wound about the equatorial surface (4) of the casing (5); the green rubber cushion (8) inserted within the pneumatic tyre (2) between the casing (5) and the tread strip (9) is vulcanized; and a pattern is engraved on the tread strip (9) wound about the equatorial surface (4) of the casing (5) after the vulcanization of the pneumatic tyre (2). During vulcanization, the pneumatic tyre (2) is maintained at ambient pressure and radial pressure is mechanically applied to the tread strip ( 9).