Method for retreading a tire casing using a heating band

Patent metadata

Field	Value
Publication number	US-2016339660-A1
Application number	US-201415106182-A
Country	US
Kind code	A1
Filing date	Dec 18, 2014
Priority date	Dec 23, 2013
Publication date	Nov 24, 2016
Grant date	—

Abstract

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.

First claim

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.

Assignees

• Marcet Gregory
• Hinc Henri
• Merino Lopez Jose
• Delbos Mathieu
• Michelin & Cie
• Michelin Rech Tech

Inventors

• Marcet Gregory
• Hinc Henri
• Merino Lopez Jose
• Delbos Mathieu

Classifications

• B29C66/1122

  Single lap to lap joints, i.e. overlap joints (B29C66/45, B29C66/472, B29C66/52272 take precedence) · CPC title

• B29C66/723

  being multi-layered (B29C66/7292, B29C66/72941 take precedence) · CPC title

• B29C66/54

  Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles · CPC title

• B29D30/54 Primary

  Retreading · CPC title

• B29C65/348

  with a polymer coating · CPC title