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Tyre comprising carcass reinforcing cords of low permeability and textile threads associated with the carcass reinforcement

A technology for tire crown reinforcement and reinforcement, which is applied to the reinforcement layer of pneumatic tires, heavy-duty tires, textile cables, etc., can solve the problems of low and unacceptable manufacturing costs, and achieve improved manufacturing costs, favorable costs, and high production efficiency. Effect

Inactive Publication Date: 2011-11-23
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the manufacturing cost becomes unacceptable simply because of the low yield

Method used

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  • Tyre comprising carcass reinforcing cords of low permeability and textile threads associated with the carcass reinforcement
  • Tyre comprising carcass reinforcing cords of low permeability and textile threads associated with the carcass reinforcement
  • Tyre comprising carcass reinforcing cords of low permeability and textile threads associated with the carcass reinforcement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0126] exist figure 1 Among them, a tire 1 of type 315 / 70R22.5 comprises a radial carcass reinforcement 2 anchored into two beads 3 around a bead wire 4 . The carcass reinforcement 2 is composed of a single layer of metal cords. The carcass reinforcement 2 is surrounded by a crown reinforcement 5 , which is itself covered with a tread 6 . The crown reinforcement 5 is formed radially from the inside to the outside by:

[0127] - a first working layer formed by continuous non-looped inextensible metal cords 11.35 over the entire width of the ply, said cords being oriented at an angle of 18°;

[0128] - A second working layer formed of continuous non-looped, non-extensible metal cords 11.35 over the entire width of the ply, said cords being oriented at an angle of 18° and aligned with the metal cords of the first working layer cross; and

[0129] - Protective layer made of elastic metal cords 6×35.

[0130] All these layers making up the crown reinforcement 5 are not shown ...

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Abstract

The invention relates to a tyre with a radial carcass reinforcement made up of at least one layer (2) of metal reinforcing elements, said tyre comprising a crown reinforcement (5) itself radially capped by a tread (6), said tread being connected to two beads by two sidewalls. According to the invention, the metal reinforcing elements of at least one layer of the carcass reinforcement (2) are unreinforced cords which, on a so-called permeability test, exhibit a throughput of less than 20 cm3 / mn and at least one layer of the carcass reinforcement (2) being provided on at least one side with textile threads (10) directed mainly in a direction parallel to that of the metal reinforcing elements (7) of the said at least one layer of the carcass reinforcement (2), said textile threads (10) undulating about this main direction.

Description

technical field [0001] The present invention relates to tires with radial carcass reinforcement, and in particular to tires intended to be fitted to heavy vehicles traveling at a constant constant speed, such as trucks, tractors, trailers or buses. Background technique [0002] Currently, and most commonly, reinforcements for tires, especially for heavy vehicles, consist of superimposed plies or plies, traditionally referred to as "carcass plies", "carcass plies", Crown ply", etc. The name reinforcement derives from its method of manufacture, which involves making a series of semi-finished products in the form of plies, usually with longitudinal, thread-like reinforcing members, which are then assembled or superimposed to build the original tire. Blank. The plies are produced in a flattened state and in a large size, and then cut to the size of the specified product. Initially, the ply is still assembled in a substantially flat state. The green blank thus produced is the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C9/07B60C9/08
CPCB60C2019/008D07B1/0626D07B2501/2046B60C9/08B60C2200/06B60C9/0007B60C9/07B60C9/09D07B2201/2061D07B1/062D07B2201/2062D07B1/0633D07B2201/2032D07B2201/2046D07B2201/2023D07B2201/2059D07B2201/2006B60C9/0238B60C2009/0491Y10T152/10855Y10T152/10873
Inventor M·科涅B·若L·纳德勒
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN