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Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2010116027
Kind Code:
A
Abstract:

To provide a pneumatic tire enhancing run-flat durability without impairing rolling resistance and riding comfortability during normal travel.

The pneumatic tire is equipped with a bead core, a carcass ply, a tread rubber layer, an inner liner, a side reinforcing layer and a bead filler. Reinforcing fiber cords constituting the carcass ply are formed of cords including at least 50 mass% of polyketone fibers subjected to drying hardening treatment after coating of RFL adhesive and satisfy (1) the tensile strength of cords in the drying process and heat treatment process is 2.9-49.0 N per one cord, (2) the drying treatment temperature in the drying process is 100-200C, and (3) when the hardening treatment temperature in the heat treatment process is Tm (C) and the hardening treatment time is s (sec), Tm/s is 1.1-8.7.


Inventors:
MORI HIROYUKI
YAMAMOTO MASAHIKO
NAKAGAWA RYUJI
Application Number:
JP2008290130A
Publication Date:
May 27, 2010
Filing Date:
November 12, 2008
Export Citation:
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Assignee:
BRIDGESTONE CORP
International Classes:
B60C9/00; B29D30/40; B60C1/00; B60C15/06; B60C17/00; C08K3/04; C08L15/00; D02G3/26; D02G3/40; D02G3/48; D06M15/41; D06M15/693
Domestic Patent References:
JP2004308027A2004-11-04
JP2002339275A2002-11-27
JP2002339275A2002-11-27
JP2004249873A2004-09-09
JP2006176673A2006-07-06
JP2003171418A2003-06-20
JP2004308027A2004-11-04
Foreign References:
WO2008010531A12008-01-24
Attorney, Agent or Firm:
Tamotsu Otani



 
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