Method for applying to the inner wall of a tire

Patent metadata

Field	Value
Publication number	US-2015251368-A1
Application number	US-201314430313-A
Country	US
Kind code	A1
Filing date	Sep 18, 2013
Priority date	Sep 24, 2012
Publication date	Sep 10, 2015
Grant date	—

Abstract

A process for applying particles to the inner wall of a tire comprising two sidewalls, a crown provided radially externally with a tread, a carcass-type reinforcing structure and at least one crown reinforcement, the inner surface of the sidewalls and of the crown forming an inner wall, at least one portion of said inner wall being covered with at least one layer of self-sealing composition.
The particles are applied after the curing of the tire.

First claim

1 . A process for applying particles to an inner wall of a tire comprising two sidewalls, a crown provided radially externally with a tread, a carcass-type reinforcing structure and at least one crown reinforcement, an inner surface of the sidewalls and of the crown forming an inner wall, at least one portion of said inner wall being covered with at least one layer of self-sealing composition, comprising applying the particles, after the curing of the tire, to the layer of self-sealing composition by a flocking technique.

2 . The process according to claim 1 , wherein the flocking technique is carried out by spraying under pressure.

3 . The process according to claim 1 , wherein a shape of the particles is defined by a ratio L/E of greater than 3, where L represents the length or largest dimension of the particle and E represents the mean thickness of the particle.

4 . The process according to claim 1 , wherein the particles have a mean diameter of between 0.2 and 5 mm.

5 . The process according to claim 1 , wherein the particles have any geometric shape.

6 . The process according to claim 1 , wherein the particles have a monochromatic or polychromatic colour.

7 . The process according to claim 1 , wherein the particles are selected from organic synthetic fibres, mineral synthetic fibres, synthetic fibres, natural fibres, used tire grindings or grindings derived from production scrap or a combination thereof.

8 . The process according to claim 1 , wherein the particles have a mean thickness of between 0.1 and 0.5 mm.

9 . The process according to claim 1 , wherein the particles cover between 60% and 95% of the inner wall.

Assignees

• Michelin & Cie
• Michelin Rech Tech
• Michelin Rech Tech

Inventors

• Le Doucen Jacques

Classifications

• B29D30/0685 Primary

  Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres (auto-repairing or self-sealing arrangements or agents B29C73/16; puncture preventing arrangements B60C19/12) · CPC title

• B05D5/00

  Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures · CPC title

• B29D2030/0682

  Inner liners · CPC title

• B05D7/02

  to macromolecular substances, e.g. rubber (treatment or coating of shaped articles made of macromolecular substances C08J7/00) · CPC title

• B05D1/14

  Flocking · CPC title