JPS6430806A - Studless tire of less change in hardness - Google Patents

Studless tire of less change in hardness

Info

Publication number
JPS6430806A
JPS6430806A JP62188158A JP18815887A JPS6430806A JP S6430806 A JPS6430806 A JP S6430806A JP 62188158 A JP62188158 A JP 62188158A JP 18815887 A JP18815887 A JP 18815887A JP S6430806 A JPS6430806 A JP S6430806A
Authority
JP
Japan
Prior art keywords
rubber
tread
hardness
belt
barrier
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.)
Pending
Application number
JP62188158A
Other languages
Japanese (ja)
Inventor
Masanori Suga
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.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
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 Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP62188158A priority Critical patent/JPS6430806A/en
Publication of JPS6430806A publication Critical patent/JPS6430806A/en
Pending legal-status Critical Current

Links

Landscapes

  • Tyre Moulding (AREA)
  • Tires In General (AREA)

Abstract

PURPOSE:To reduce change in hardness by arranging an oil barrier having a specific ratio of compound polymer of halogenated butyl rubber between a tread and a belt. CONSTITUTION:An oil barrier is arranged between a tread and a belt to prevent a softening agent containing a low temperature plasticizer in the tread rubber from moving to the belt. At least 30 weight % of the polymer to be compounded into the oil barrier is substituted with halogenated butyl rubber such as chlorinated butyl rubber, brominated butyl rubber, etc. A high viscosity petroleum-based aromatic plasticizer which moves less in rubber is compounded in the barrier ply rubber at a volumetric content of at least about 40% of the total of liquid state compounding agent such as softening agent, plasticizer, etc., of the tread rubber. At the same time, the concentration gradient of the softening agent in the tread rubber and the barrier ply rubber are made small. Changes in hardness are thus restricted.
JP62188158A 1987-07-27 1987-07-27 Studless tire of less change in hardness Pending JPS6430806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62188158A JPS6430806A (en) 1987-07-27 1987-07-27 Studless tire of less change in hardness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62188158A JPS6430806A (en) 1987-07-27 1987-07-27 Studless tire of less change in hardness

Publications (1)

Publication Number Publication Date
JPS6430806A true JPS6430806A (en) 1989-02-01

Family

ID=16218769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62188158A Pending JPS6430806A (en) 1987-07-27 1987-07-27 Studless tire of less change in hardness

Country Status (1)

Country Link
JP (1) JPS6430806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7082976B2 (en) 2001-12-11 2006-08-01 Sumitomo Rubber Industries, Ltd. Pneumatic tire having tread portion formed of two layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7082976B2 (en) 2001-12-11 2006-08-01 Sumitomo Rubber Industries, Ltd. Pneumatic tire having tread portion formed of two layers

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