JPS55152612A - High speed large size pneumatic tire with high durability - Google Patents
High speed large size pneumatic tire with high durabilityInfo
- Publication number
- JPS55152612A JPS55152612A JP5862879A JP5862879A JPS55152612A JP S55152612 A JPS55152612 A JP S55152612A JP 5862879 A JP5862879 A JP 5862879A JP 5862879 A JP5862879 A JP 5862879A JP S55152612 A JPS55152612 A JP S55152612A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- tire
- cap
- base
- durability
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/0041—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers
- B60C11/005—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers with cap and base layers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Graft Or Block Polymers (AREA)
- Tires In General (AREA)
Abstract
PURPOSE: To improve the durability of a tire by providing on the outer periphery of a crown section of a tire a laminated tread layer which consists of a styrene- butadiene-type cap rubber having predetermined physical properties and a polybutadiene-type base rubber of a predetermined microcrystalline structure.
CONSTITUTION: A cap rubber 9 is placed on a base rubber 10 so as to be united to the outer periphery of a crown section 5 of a tire. The cap rubber 9 contains as a principal component a blended rubber which contains 60 percent by weight of styrene-butadiene rubber among the entire rubber components thereof. The cap rubber has, after vulcanization, a restitution coefficiency of 50% or less. The base rubber 10 contains as a principal component a polybutadiene rubber consisting principally of a block or graft polymer of cis-1,4- and syn-1,2-polybutadienes. The polymer contains 6W20wt% of a microcrystalline syn-1,2-structure, and 40 wt% or more thereof is crystalline. The polymer is further in short filaments having the average diameter of 0.05W1μm and the average length of 0.8W10μm. The base rubber 10 has, after vulcanization, a restitution coefficiency of 70% or more and an elastic modulus of 25kg/cm2 or more at a temperature of 100°C. Thus, the provision of a cap-base laminated tread layer can improve the durability of a tire.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54058628A JPS583842B2 (en) | 1979-05-15 | 1979-05-15 | High durability, high speed, large pneumatic tires |
AU58053/80A AU515511B2 (en) | 1979-05-15 | 1980-05-02 | Tyre with tread of rubber laminate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54058628A JPS583842B2 (en) | 1979-05-15 | 1979-05-15 | High durability, high speed, large pneumatic tires |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55152612A true JPS55152612A (en) | 1980-11-28 |
JPS583842B2 JPS583842B2 (en) | 1983-01-24 |
Family
ID=13089839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54058628A Expired JPS583842B2 (en) | 1979-05-15 | 1979-05-15 | High durability, high speed, large pneumatic tires |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS583842B2 (en) |
AU (1) | AU515511B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4527606A (en) * | 1979-01-24 | 1985-07-09 | Bridgestone Tire Company Limited | Pneumatic radial tires for passenger cars having low rolling resistance and excellent slipping resistance |
WO2001003954A1 (en) * | 1999-07-09 | 2001-01-18 | Pirelli Pneumatici Spa | High performance tyre with tread band having an anisotropic underlayer stable upon temperature variation |
JP5947547B2 (en) * | 2010-02-04 | 2016-07-06 | 株式会社ブリヂストン | Rehabilitation tire |
US20170166012A1 (en) * | 2015-12-14 | 2017-06-15 | Sumitomo Rubber Industries, Ltd. | Heavy duty pneumatic tire |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6044638U (en) * | 1983-09-01 | 1985-03-29 | 株式会社 大和建設 | A sink with a counter that can be adjusted up and down and rotates a quarter of the way left and right. |
-
1979
- 1979-05-15 JP JP54058628A patent/JPS583842B2/en not_active Expired
-
1980
- 1980-05-02 AU AU58053/80A patent/AU515511B2/en not_active Ceased
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4527606A (en) * | 1979-01-24 | 1985-07-09 | Bridgestone Tire Company Limited | Pneumatic radial tires for passenger cars having low rolling resistance and excellent slipping resistance |
WO2001003954A1 (en) * | 1999-07-09 | 2001-01-18 | Pirelli Pneumatici Spa | High performance tyre with tread band having an anisotropic underlayer stable upon temperature variation |
JP5947547B2 (en) * | 2010-02-04 | 2016-07-06 | 株式会社ブリヂストン | Rehabilitation tire |
US9573423B2 (en) | 2010-02-04 | 2017-02-21 | Bridgestone Corporation | Retreaded tire |
US20170166012A1 (en) * | 2015-12-14 | 2017-06-15 | Sumitomo Rubber Industries, Ltd. | Heavy duty pneumatic tire |
US10946700B2 (en) * | 2015-12-14 | 2021-03-16 | Sumitomo Rubber Industries, Ltd. | Heavy duty pneumatic tire |
Also Published As
Publication number | Publication date |
---|---|
JPS583842B2 (en) | 1983-01-24 |
AU5805380A (en) | 1981-02-12 |
AU515511B2 (en) | 1981-04-09 |
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