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US 12,202,221 B2Granted
Composite tread with targeted stiffness gradient and method of making
AssigneeThe Goodyear Tire & Rubber Company
InventorsHongbing Chen, Christopher David Dyrlund, Adam Mark Baldan, Elizabeth Amelia Rogenski
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Abstract
A method for forming a composite tread, the method comprising the steps of: forming a coextruded strip of a first compound and a second compound, wherein the first compound is a tread compound, and the second compound is formed from a second compound, wherein the tread is formed from winding the coextruded strip onto the tire building drum while varying the ratio of the first compound to the second compound.
Claims8
A method for forming a composite tread on a tire building drum, the method comprising the steps of:
- forming a coextruded strip of a first layer and a second layer, wherein the first layer is formed from a first compound, and the second layer is formed from a second compound, wherein the first and second compounds are different, wherein the tread is formed from winding the coextruded strip onto the tire building drum while varying a ratio of the first compound to the second compound, wherein a first lateral edge of the tread to a first tread block is formed from 90-100% of the first compound and 0-10% of the second compound, and a second lateral edge of the tread to a second tread block is formed from 50% of the first compound and 50% of the second compound, and
- forming at least one of a plurality of tread blocks while continuously varying the ratio of the first compound to the second compound.
Dependencies are inferred from the claim text.