Tire
CN115107417BActive Publication Date: 2026-04-14SUMITOMO RUBBER INDUSTRIES LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SUMITOMO RUBBER INDUSTRIES LTD
- Filing Date
- 2022-03-10
- Publication Date
- 2026-04-14
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Figure CN115107417B_ABST
Abstract
The present application provides a tire (2) capable of preventing wear from significantly reducing wet performance and achieving a reduction in rolling resistance. The tire (2) has a tread (4) with a cap layer (38) constituting a portion of the outer surface of the tire (2), a base layer (40) located radially inside the cap layer (38), and an intermediate layer (42) located radially between the cap layer (38) and the base layer (40). The tangent of the loss angle of the intermediate layer (42) at 30°C is lower than the tangent of the loss angle of the cap layer (38) at 30°C, and the tangent of the loss angle of the base layer (40) at 30°C is lower than the tangent of the loss angle of the intermediate layer (42) at 30°C. The tread (4) includes at least two three-layer portions (44) composed of the cap layer (38), the intermediate layer (42), and the base layer (40), and at least one two-layer portion (46) located between a first three-layer portion (44a) and a second three-layer portion (44b) and composed of the cap layer (38) and the base layer (40).
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Citation Information
Patent Citations
Pneumatic tire
JP2017210044A
Pneumatic tire
JP2015131599A
Tire with tread having an intermediate rubber layer containing a microsphere dispersion
US20090255613A1