Pneumatic tire and method of manufacturing the same
A silicone-based sealant layer with mixed coated and non-coated portions on the tire's inner surface addresses weight and heat dissipation issues, improving high-speed durability without compromising puncture sealing.
JP2025166368APending Publication Date: 2025-11-06THE YOKOHAMA RUBBER CO LTD
Patent Information
- Application Number
- JP2024070343
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-11-06
Smart Images
Figure 2025166368000001_ABST
Abstract
To provide a pneumatic tire allowed to improve high-speed durability without deteriorating puncture sealability, and a method of manufacturing the same.SOLUTION: A pneumatic tire includes: an annular tread portion 1 extending in a tire circumferential direction; a pair of sidewall portions 2 disposed on both sides of the tread portion 1; and a pair of bead portions 3 disposed on inner sides in a tire radial direction of the sidewall portions 2. Therein: a plurality of belt layers 7 are disposed in the tread portion 1; a sealant layer 20 is formed on a tire inner surface Ts in the tread portion 1; a sealant of the sealant layer 20 is formed of a silicone-based composition; the sealant layer 20 is disposed between both end portions 7Be in a tire lateral direction of a belt layer 7B positioned on an outermost side in the tire radial direction among the plurality of belt layers 7 such that a coated portion 20x coated with the sealant and a non-coated portion 20y not coated with the sealant are mixedly arranged.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
Pneumatic tire and method of manufacturing
JP2003080909A