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Cord, process for producing the same, and composite of cord with rubber

A manufacturing method and cord technology, applied to textiles, papermaking, rope-making auxiliary devices, textile cables, etc., can solve the problems of increased twisting loss, achieve the effects of suppressing twisting loss and improving corrosion resistance

Inactive Publication Date: 2010-08-11
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the field of metal cables used in cargo-handling machines represented by cranes, for example, twisting loss increases due to a large number of wires constituting the strands and indentation caused by meshing action of the strands constituting the metal cables.

Method used

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  • Cord, process for producing the same, and composite of cord with rubber
  • Cord, process for producing the same, and composite of cord with rubber
  • Cord, process for producing the same, and composite of cord with rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0073] Various cords having the specifications shown in Table 1 and Table 2 were produced. The structure of the cord is as figure 1 , figure 2 and Figure 5 to Figure 18 shown. Notice, Figure 15 to Figure 18 Both show cross-sectional views of conventional cords, figure 1 , figure 2 and Figure 5 to Figure 14 Each shows a cross-sectional view of a cord according to the invention.

[0074] A ply in which a plurality of cords are arranged parallel to each other at given intervals and embedded in a rubber sheet according to the present invention is applied to a belt, and a test tire is constructed using this belt . The following items of the test tire were checked: penetration rate of rubber into the core strand of the reinforcing cord (%), penetration rate of rubber into the interior of the sheath strand (%), penetration rate of rubber between the core strand and the sheath strand (%) and twist loss (%). Furthermore, the number of steps in the manufacturing method of...

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PUM

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Abstract

A cord obtained by twisting strands each composed of filaments, wherein the peripheral surface of the filaments has been coated with an unvulcanized rubber. The cord hence has improved suitability for rubber infiltration and improved corrosion resistance and is reduced in twist shrinkage.

Description

technical field [0001] The present invention relates to a cord for reinforcing rubber products such as tires and industrial belts, a method for producing the cord, and a rubber cord composite. Background technique [0002] Cords for reinforcing tires, especially tires for construction vehicles, require high strength, so a cord is used for this purpose: the cord is made of strands, each of which is twisted by twisting a plurality of filaments (single Filament is manufactured, and the strands are further twisted to form a cord of so-called multiple-twisting structure. [0003] However, in the manufacture of cords with a multi-twisted structure, the strands are made of multiple filaments, and then the strands are twisted to form the cord. Thus, such cords have more filaments and a more complex twisting structure than cords with a single twist structure used for reinforcing eg passenger vehicles. As a result, the tensile strength of the cord is smaller than the sum of the tens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D07B1/06D07B1/16
CPCD07B2201/204D07B2201/2074D07B2201/2046D07B2207/205D07B7/145D07B1/165D07B2501/2046D07B1/0633D07B2201/2028D07B2201/2061D07B2201/2023D07B2201/2073D07B2201/2049D07B2201/2037D07B2201/2062D07B1/0613D07B1/0626D07B2201/2081D07B2201/2029D07B2201/2065D07B2201/2039D07B2801/24D07B2801/12
Inventor 西村光泰
Owner BRIDGESTONE CORP