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Patent Searching and Data


Title:
PNEUMATIC TIRE FOR HEAVY LOAD
Document Type and Number:
WIPO Patent Application WO/2014/168232
Kind Code:
A1
Abstract:
Provided is a pneumatic tire for heavy load which has a reduced tire weight while ensuring a performance of preventing air permeation and high durability. The pneumatic tire for heavy load is provided with an inner liner (7) consisting of a first liner and a second liner laminated together, characterized in that: the thickness of the first liner is 1.2-1.9 mm; the thickness of the second liner is 1.2-1.6 mm; the total thickness of the first and second liners is 2.4-3.4 mm; the first liner and the second liner are respectively formed of a rubber composition (1) and a rubber composition (2); the rubber composition (1) comprises 100 parts by weight of a diene based rubber, which contains 50-100 wt% of a butyl rubber, blended with 5-50 parts by weight of a plate-shaped inorganic filler which has a particle size of 4.9-7.5 μm and an aspect ratio (Ar) of 2.4-3.4; and the rubber composition (2) comprises 100 parts by weight of a diene based rubber, which contains 50 wt% or more of a natural rubber, blended with 0.05-0.5 part by weight, in terms of a metal content, of an organic metal salt.

Inventors:
NOGUCHI, Fumitoshi (Hiratsuka Factory, 2-1, Oiwake, Hiratsuka-sh, Kanagawa 01, 〒2548601, JP)
Application Number:
JP2014/060468
Publication Date:
October 16, 2014
Filing Date:
April 11, 2014
Export Citation:
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Assignee:
THE YOKOHAMA RUBBER CO., LTD. (36-11, Shimbashi 5-chome Minato-k, Tokyo 85, 〒1058685, JP)
International Classes:
B60C5/14; B32B25/12; B32B25/14
Foreign References:
JP2012121302A2012-06-28
JP2009138148A2009-06-25
JP2008528739A2008-07-31
JPS6422942A1989-01-25
JPH1159120A1999-03-02
JP2012101751A2012-05-31
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (37 Kowa Building, 4-5 Tsukiji 1-chome, Chuo-k, Tokyo 45, 〒1040045, JP)
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