Title:
2層のインナーライナーを備えたタイヤ
Document Type and Number:
Japanese Patent JP4680767
Kind Code:
B2
Abstract:
A pneumatic tire (10) with a double layer innerliner structure (14) bonded to an inner face of the tire carcass (12) for reducing noise generated by air vibrations inside of the tire's air chamber (20), and a method of making such a tire (10) is disclosed. The double layer structure (14) includes a first innerliner layer (16) of non-foamed rubber adjacent the carcass (12) and a second innerliner layer (18) of foamed porous rubber forming an innermost surface (19) of the tire (10). The foamed porous rubber is formed by curing a rubber composition having a nitrogen-releasing foaming agent dispersed therein that decomposes at the vulcanization temperature to release nitrogen gas. The second innerliner layer (18) further has an open-celled structure with a plurality of open cavities that are formed by altering the innermost surface (19) of the foamed innerliner layer (18), wherein the cavities have a mean diameter of 50-250 ¼m, preferably 130-200 ¼m, and wherein the altering is done by knife cutting or laser perforating or by scanning the innermost surface with a pulsed laser operating at a pulse rate of 10 to 30 kHz.
Inventors:
Carlo Can
Uwe Frank
Uwe Frank
Application Number:
JP2005374270A
Publication Date:
May 11, 2011
Filing Date:
December 27, 2005
Export Citation:
Assignee:
THE GOODYEAR TIRE & RUBBER COMPANY
International Classes:
B60C5/14; B29C33/02; B29C35/02; B29D30/30; B29L30/00
Domestic Patent References:
| JP2003285607A | ||||
| JP7228726A | ||||
| JP640206A | ||||
| JP4254203A | ||||
| JP2127101A | ||||
| JP63154410A |
Attorney, Agent or Firm:
Akio Miyazaki
Ishibashi Masayuki
Shinichi Iwata
Masaaki Ogata
Ishibashi Masayuki
Shinichi Iwata
Masaaki Ogata