Title:
PNEUMATIC TIRE FORE VEHICLE
Document Type and Number:
Japanese Patent JPS62116303
Kind Code:
A
Abstract:
PURPOSE:To aim at the promotion of lightweightiness in a tire and improvement in its durability, by forming each cord of a carcass cord ply consisting of plural layers with a specified aromatic polyamide fiber, and setting elongation of the fiber so as to satisfy a specified relational expression. CONSTITUTION:This pneumatic tire for heavy-duty vehicle use is provided with a carcass cord ply (carcass) 2 of plural layers made up of disposing a cord at angles ranging from 90-75 deg. to the circumferential direction. And, each cord to be used for this carcass 2 is formed from an aromatic polyamide fiber having more than 80mol of a repetitive unit shown in an expression I. And, when the carcass 2 is set to a ply, 2 plies ... and n plies from the inner liner side, elongation En% at the time of 2.2g/d of the said fiber constituting each ply is set so as to satisfy an expression II.
Inventors:
IMAI ISAMU
INADA NORIO
INADA NORIO
Application Number:
JP25680085A
Publication Date:
May 27, 1987
Filing Date:
November 18, 1985
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
B60C9/00; B60C9/08; B60C19/00; D02G3/02; D02G3/48; (IPC1-7): B60C9/08; D02G3/02; D02G3/48
Attorney, Agent or Firm:
Akihide Sugimura
Previous Patent: PNEUMATIC RADIAL TIRE FOR HEAVY-DUTY VEHICLE
Next Patent: SPIKE PIN FOR TIRE AND MANUFACTURE THEREOF
Next Patent: SPIKE PIN FOR TIRE AND MANUFACTURE THEREOF