Patent ID: 11931979
Assignee: THE YOKOHAMA RUBBER CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A tire vulcanization mold, comprising:
a tread molding surface comprising a groove molding portion and a land portion molding portion,
a surface roughness Ra in the groove molding portion being smaller than a surface roughness Ra in the land portion molding portion, the groove molding portion comprising a surface treated by a surface treatment configured to decrease the surface roughness Ra of the groove molding portion relative to the surface roughness Ra in the land portion molding portion,
in the groove molding portion, the surface roughness Ra being smallest at 0.12 μm or less in a range comprising at least a main groove molding portion, and
the surface roughness Ra in the land portion molding portion being 3.2 μm or more, and 4.8 μm or less.