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Tire having a built-in self-sealing layer

A self-sealing and airtight layer technology, applied to tire parts, tires, wheels, etc., can solve the problem that the thermoplastic film cannot be separated from the surface of the sealing layer

Inactive Publication Date: 2015-01-07
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the Applicant's company has noticed that, contrary to what is indicated in that document, in the case of certain self-sealing layer formulations, such nylon-based thermoplastic films cannot be separated from the surface of the self-sealing layer

Method used

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  • Tire having a built-in self-sealing layer
  • Tire having a built-in self-sealing layer
  • Tire having a built-in self-sealing layer

Examples

Experimental program
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Effect test

Embodiment Construction

[0036] figure 1 Exemplarily showing a pneumatic tire or a radial cross-section of a tire incorporating a self-sealing layer with a protective layer according to one embodiment of the invention.

[0037] This tire 1 comprises a crown 2 (reinforced with a crown reinforcement or belt 6 ), two sidewalls 3 and two beads 4 , each of these beads 4 reinforced with a bead wire 5 . The crown reinforcement 6 is radially covered on the outside by a rubber tread 9 . A carcass reinforcement 7 is wound around the two bead wires 5 in each bead 4 , and a retournement 8 of this reinforcement 7 is provided, for example, towards the outside of the tire 1 . The carcass reinforcement 7 , as known per se, is composed of at least one ply reinforced with cords, for example textile or metallic, called "radial" cords, ie these cords The lines are arranged practically parallel to each other and extend from one bead to the other such that they are separated from the circumferential midplane (the plane ...

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Abstract

A pneumatic tyre with a built-in self-sealing layer includes an outer rubbery tread, a carcass reinforcement, a gastight layer located at an inside position relative to the carcass reinforcement, a separable protective layer positioned innermost, and a self-sealing layer adjacent to the separable protective layer and located at an inside position relative to the gastight layer. The separable protective layer is a thermoplastic film that includes at least one fluoropolymer.

Description

technical field [0001] The present invention relates to pneumatic tires comprising a self-sealing layer on the inner wall thereof to seal any punctures in use, and more particularly to a pneumatic tire wherein the self-sealing layer is located on the tire of the pneumatic tire prior to its vulcanization. In blank. Background technique [0002] Many documents disclose pneumatic tires comprising a self-sealing layer on all or part of their inner surfaces. [0003] For example, document US 4418093 discloses a method of uniformly disposing a layer of self-sealing material on the inner wall of a vulcanized pneumatic tire by rotating the pneumatic tire followed by an oscillating motion until the self-sealing material is sufficiently cross-linked so as not to flow again. [0004] One of the problems encountered when the self-sealing layer is in the uncured green tire of a pneumatic tire is due to the very sticky nature of the self-sealing layer, which adheres strongly to the cure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C19/12
CPCB29C47/6018C08L7/00C08L57/02B29C47/667B29D2030/0682B29D30/0681B29C47/0004B29D2030/069B29C47/38B29D2030/0695B29C73/163B29C47/6012B29C47/10B29K2105/0038B29C73/22B29C47/0019B29C47/1081B29L2030/00B60C19/12B29D30/0685C08L9/00B29C48/022B29C48/07B29C48/285B29C48/297B29C48/395B29C48/52B29C48/53B29C48/687Y10T152/10666Y10T152/10684C08L2666/08
Inventor J·梅里诺洛佩斯S·里戈M·奥昂托F·皮亚洛D·丰贝勒
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN