Title:
STEEL CORD AND MANUFACTURING PROCESS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/142034
Kind Code:
A1
Abstract:
Disclosed in the present invention are a steel cord and a manufacturing process therefor, comprising one core steel wire located at the center and having a diameter of d, and M sheath-layer steel wires arranged around the core steel wire at the center, tangent to the core steel wire, and having a diameter of d1. At least two gaps L exist between the M sheath-layer steel wires, wherein M is 4. The d, d1, and L satisfy the following relationship: 0.420<(d/d1)<0.800, wherein d1 is 0.20 mm-0.44 mm, and L≥0.0008 mm. According to the steel cord of the present invention, rubber can be sufficiently permeated into the gaps, thereby reducing air content in the steel cord, avoiding point contact friction between multiple layers of steel wires due to insufficient permeation of rubber, and solving the problem that the bearing capacity of a steel cord fails due to abrasion; moisture immersed into the inside of a steel cord from an external cut of the surface of a tire may be prevented from being immersed into gaps inside the hollow steel cord, thereby improving corrosion resistance, fatigue resistance and impact resistance of the tire, and prolonging service life of the tire.
More Like This:
Inventors:
LIU XIANG (CN)
WANG AIPING (CN)
ZHAO NIANPENG (CN)
MA WEIMING (CN)
LIU XIANGHUI (CN)
PAN CHUNDONG (CN)
ZHAO CUNJUN (CN)
WANG AIPING (CN)
ZHAO NIANPENG (CN)
MA WEIMING (CN)
LIU XIANGHUI (CN)
PAN CHUNDONG (CN)
ZHAO CUNJUN (CN)
Application Number:
PCT/CN2021/091412
Publication Date:
July 07, 2022
Filing Date:
April 30, 2021
Export Citation:
Assignee:
JIANGSU XINGDA STEEL TYRE CORD (CN)
International Classes:
D07B1/06
Foreign References:
| EP3034689A1 | 2016-06-22 | |||
| CN109629277A | 2019-04-16 | |||
| CN112647328A | 2021-04-13 | |||
| CN210797071U | 2020-06-19 | |||
| CN207091805U | 2018-03-13 |
Attorney, Agent or Firm:
NANJING ZONGHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
Download PDF: