公开(公告)号：US20220055329A1

公开(公告)日：2022-02-24

申请号：US17435567

申请日：2020-03-18

申请人： Bridgestone Europe NV/SA

发明人： Luca Lelio ,  Jeroen Lust ,  Bram Vincent

IPC分类号： B29D30/56

摘要： 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).

公开(公告)号：US20220063224A1

公开(公告)日：2022-03-03

申请号：US17435573

申请日：2020-03-18

申请人： Bridgestone Europe NV/SA

发明人： Luca Lelio ,  Jeroen Lust ,  Bram Vincent

IPC分类号： B29D30/56

摘要： 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. 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).