Title:
STEEL CORD HAVING GLUE PERMEATION STRUCTURE AND PREPARATION METHOD FOR STEEL CORD
Document Type and Number:
WIPO Patent Application WO/2022/222301
Kind Code:
A1
Abstract:
A steel cord having a glue permeation structure and a preparation method for the steel cord. The steel cord comprises a core wire (11), wherein the core wire (11) is a monofilament with the diameter of d0, and n layer wires are twisted around the core wire (11) in the same twisting direction and at different twisting pitches; the layer wires comprise a middle layer wire (22) and an outer layer wire (33), the middle layer wire (22) comprises four monofilaments with the diameter of d1, and the outer layer wire (33) comprises nine monofilaments with the diameter of d2, wherein the diameters of the core wire (11), the middle layer monofilaments and the outer layer monofilaments satisfy the following relationship: d0 < d1 < d2; and gaps L are reserved among the monofilaments of the outer layer wire (33), and gaps L1 are reserved among the monofilaments of the middle layer wire. The preparation method comprises: preparing three kinds of wet-drawn steel wires, the diameters of which are d0, d1 and d2 respectively, and twisting same into a steel wire having a "1+4+9" structure, so as to obtain a steel cord with a glue permeation performance. The improvement of the glue coating performance of the steel cord can enhance the corrosion resistance, the fatigue resistance, the impact resistance and the adhesion retention of a tire, thereby prolonging the service life of the tire.
Inventors:
LIU XIANG (CN)
WANG AIPING (CN)
MA WEIMING (CN)
FENG GUOBING (CN)
KE ZENGGUANG (CN)
CAO HENGXIANG (CN)
WANG AIPING (CN)
MA WEIMING (CN)
FENG GUOBING (CN)
KE ZENGGUANG (CN)
CAO HENGXIANG (CN)
Application Number:
PCT/CN2021/109549
Publication Date:
October 27, 2022
Filing Date:
July 30, 2021
Export Citation:
Assignee:
JIANGSU XINGDA STEEL TYRE CORD (CN)
International Classes:
D07B1/06
Domestic Patent References:
| WO2019069560A1 | 2019-04-11 |
Foreign References:
| CN112064385A | 2020-12-11 | |||
| CN212452056U | 2021-02-02 | |||
| CN210066045U | 2020-02-14 | |||
| CN113123149A | 2021-07-16 | |||
| JPH0610283A | 1994-01-18 | |||
| CN210797071U | 2020-06-19 | |||
| JP2020142679A | 2020-09-10 | |||
| JP6028508B2 | 2016-11-16 |
Attorney, Agent or Firm:
NANJING ZONGHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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