JPS55152612A - High speed large size pneumatic tire with high durability - Google Patents

High speed large size pneumatic tire with high durability

Info

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
Application number
JP5862879A
Other languages
Japanese (ja)
Other versions
JPS583842B2 (en
Inventor
Yasumi Kawaguchi
Takashi Hatanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP54058628A priority Critical patent/JPS583842B2/en
Priority to AU58053/80A priority patent/AU515511B2/en
Publication of JPS55152612A publication Critical patent/JPS55152612A/en
Publication of JPS583842B2 publication Critical patent/JPS583842B2/en
Expired legal-status Critical Current

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
JP54058628A 1979-05-15 1979-05-15 High durability, high speed, large pneumatic tires Expired JPS583842B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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.

Cited By (6)

* Cited by examiner, † Cited by third party
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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