Title:
【発明の名称】空気入りラジアルタイヤおよびスチールコード補強ベルト
Document Type and Number:
Japanese Patent JP2900268
Kind Code:
B2
Abstract:
PURPOSE:To improve the binding durability of a belt layer by forming the belt layer through coating of a steel cord consisting of a plurality of element wires twisted with each other and having an expansion of more than a predetermined level with an organic high polymer coating layer, and through embedding it in coating rubber, and thereafter by specifying 25% modulus for both layers respectively where that of the coating layer is larger. CONSTITUTION:A steel cord a consisting of a plurality of, that is two, for example, element wires twisted with each other, and having an expansion of more than 0.1% when a tensile load of 4kg is applied is coated with a coating layer 3 consisting of organic high polymer material, that is epoxy resin, for example, having a 25% modulus of more than 15kg/cm<2>. In addition, it is embedded in coating rubber of a 25% modulus of more than 10kg/cm<2>, that is a natural rubber layer 4, for example, to form a belt layer reinforced belt 5. The 25% modulus of the organic high polymer material is set larger than that of the coating rubber. In this constitution, the binding durability of the belt layer can be improved.
Inventors:
NAKAKITA KAZUMASA
Application Number:
JP8686789A
Publication Date:
June 02, 1999
Filing Date:
April 07, 1989
Export Citation:
Assignee:
YOKOHAMA GOMU KK
International Classes:
B60C9/20; B60C9/00; (IPC1-7): B60C9/20; B60C9/00
Domestic Patent References:
| JP5743866A | ||||
| JP61196805A | ||||
| JP63110102U | ||||
| JP644921B2 |
Attorney, Agent or Firm:
Shinichi Ogawa (2 outside)