METHOD FOR RETREADING A TIRE CASING USING A HEATING BAND
In a method for manufacturing a tire casing, at least one electrically conductive wire forms turns that are centered on a main axis of the casing. Additionally, a bonding layer is incorporated into the casing.
1 . A method of manufacturing a tire casing, comprising the steps of:
forming turns centered on a main axis ( 8 ) of the casing with at least one electrically conductive wire, and
disposing a bonding layer inside the casing.
2 . The method as set forth in claim 1 , wherein the wire is metal.
3 . The method as set forth in claim 1 , wherein the bonding layer comprises a hot-melt material of a thermoplastic elastomer.
4 . The method as set forth in claim 1 , wherein a carcass of the casing is provided with a reinforcement ply separate from the wire.
5 . The method as set forth in claim 1 , wherein the wire is incorporated into a tread ( 6 ) of the casing.
6 . The method as set forth in claim 1 , wherein the wire is incorporated into the bonding layer.
7 . A tire casing, comprising;
at least one wire forming turns centred on a main axis of the casing, and
a bonding layer comprising a hot-melt material.
8 . A method of retreading a tire casing, comprising the steps of;
heating a bonding layer by means of a wire through which an electric current passes and wherein the wire extends inside the casing and forms turns centered on a main axis of the casing.
9 . The method as set forth in claim 8 , wherein a carcass of the casing is mounted on a rim.
10 . The method as set forth in claim 8 , wherein a tread is fitted on a carcass and the wire is incorporated into the tread.
11 . The method as set forth in claim 9 , wherein the carcass is inflated.
12 . The method as set forth in claim 8 , wherein the carcass is kept in the inflated state while the casing is cooled.
13 . The method as set forth in claim 8 , wherein pressure is applied to an outer surface of the casing towards the inside thereof.
14 . The method as set forth in claim 13 , wherein the pressure outside the casing is maintained while the casing is cooled.
15 . A tire casing that it has undergone a retreading method according to claim 8 .
16 . A tread which is in the form of a closed ring and does not have a casing carcass and wherein at least one electrically conductive wire forms turns centered on a main axis of the tread.