Method of preparing a bottom surface of a precured tire tread
AssigneeBridgestone Bandag, LLC
InventorDavid L. Bender
Life of this patent
Estimating the term…
Abstract
A method of preparing a precured tire tread includes forming a green tire tread strip having a top surface and a bottom surface. The method also includes curing the green tire tread strip to form a precured tire tread having a top surface and a bottom surface. The method further includes abrasive blasting the bottom surface of the precured tire tread, air blasting the bottom surface of the precured tire tread, and washing the bottom surface of the precured tire tread with a liquid.
Claims20
A method of preparing a precured tire tread, the method comprising:
- forming a green rubber mixture;
- extruding the green rubber mixture into a green tire tread strip having a top surface and a bottom surface;
- placing the green tire tread strip in a tire tread vulcanization mold;
- curing the green tire tread strip to form a precured tire tread having a top surface and a bottom surface, wherein the curing includes applying heat of at least 150° C.;
- removing the precured tire tread from the tire tread vulcanization mold while the precured tire tread has a temperature of at least 120° C.;
- abrasive blasting the bottom surface of the precured tire tread while the precured tire tread has a temperature of at least 80° C.;
- and
- applying a cement to the bottom surface of the precured tire tread, wherein the cement is selected from the group consisting of a solvent based cement and a water based cement.
A method of preparing a precured tire tread, the method comprising:
- forming a green tire tread strip having a top surface and a bottom surface;
- curing the green tire tread strip to form a precured tire tread having a top surface and a bottom surface;
- abrasive blasting the bottom surface of the precured tire tread while the precured tire tread has a temperature of at least 80° C.;
- air blasting the bottom surface of the precured tire tread;
- washing the bottom surface of the precured tire tread with a liquid;
- and
- applying a cement to the bottom surface of the precured tire tread, wherein the cement is selected from the group consisting of a solvent based cement and a water based cement.
A method of retreading a tire, the method comprising:
- providing a tire casing;
- providing a green tire tread strip having a bottom surface, a first end, and a second end;
- curing the green tire tread strip to form a precured tire tread having a top surface and a bottom surface, wherein the curing includes applying heat of at least 150° C.;
- abrasive blasting the bottom surface of the precured tire tread while the precured tire tread has a temperature of at least 80° C.;
- applying a cement to at least one of the tire casing and the bottom surface of the precured tire tread, wherein the cement is selected from the group consisting of a solvent based cement and a water based cement;
- and
- winding the precured tire tread around the tire casing.
Dependencies are inferred from the claim text.