Tire with rfid enclosed in different rubber layers and related methods
AssigneeBridgestone Americas Tire Operations, LLC
InventorsClaude David Rollins, Seth M. Miller
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a tire having an electronic communication module including a radio device where the radio device is positioned between a first rubber layer and a second rubber layer, with the second rubber layer having a T50 cure time at 160° C. that is than the T50 cure time of the first rubber layer. Also disclosed are related methods for curing a tire with an electronic communication module including a radio device positioned between a first rubber layer and a second rubber layer, with the second rubber layer having a T50 cure time at 160° C. that is than the T50 cure time of the first rubber layer.
Claims20
A tire having an electronic communication including a radio device positioned between a first rubber layer and a second rubber layer,
- wherein the first rubber layer is comprised of 100 parts of at least one diene-based rubber, at least one filler, and a cure package and the first rubber layer has a T50 cure time T50-1 at 160° C. of about 1.5 to about 3.5 minutes,
- wherein the second rubber layer is comprised of at least one diene-based rubber, at least one filler, and a cure package, and the second rubber layer has a T50 cure time T50-2 at 160° C. that is greater than T50-1 and is about 2.5 to about 5 minutes,
- wherein the first and second rubber layers each independently have a thickness of about 0.4 to about 3 mm,
- wherein the 100 parts of the at least one diene-based rubber of the first rubber layer includes a majority by weight of polybutadiene, polyisoprene, natural rubber, or mixtures thereof, and no more than 10 parts in total of EPDM, butyl rubber, halogenated butyl rubber, or nitrile rubber, and the 100 parts of the at least one diene-based rubber of the second rubber layer includes a majority by weight of polyisoprene, natural rubber, styrene-butadiene rubber, or mixtures thereof, and no more than 10 parts in total of EPDM, butyl rubber, halogenated butyl rubber, or nitrile rubber,
- wherein the at least one filler of the first rubber layer includes about 30 to about 50 phr of carbon black, and the at least one filler of the second rubber layer includes about 30 to about 50 phr of at least one filler selected from carbon black, silica, and mixtures thereof,
- wherein the cure package of the first rubber layer includes sulfur as a vulcanizing agent and at least one vulcanization accelerator with a weight ratio of vulcanization accelerator to sulfur of 0.7:1 to 1.5:1, and the cure package of the second rubber layer includes
- sulfur as a vulcanizing agent and at least one vulcanization accelerator with a weight ratio of vulcanization accelerator to sulfur of no more than 0.6:1, and
- wherein the tire includes an inner liner and the radio device is positioned radially inward of the inner liner with the second layer against the inner liner and the first rubber layer facing radially inward and not against the inner liner.
A tire having an electronic communication including a radio device positioned between a first rubber layer and a second rubber layer,
- wherein the first rubber layer is comprised of 100 parts of at least one diene-based rubber, at least one filler, and a cure package and the first rubber layer has a T50 cure time T50-1 at 160° C. of about 1.5 to about 3.5 minutes,
- wherein the second rubber layer is comprised of at least one diene-based rubber, at least one filler, and a cure package, and the second rubber layer has a T50 cure time T50-2 at 160° C. that is greater than T50-1 and is about 2.5 to about 5 minutes,
- wherein the first and second rubber layers each independently have a thickness of about 0.4 to about 3 mm, and
- wherein the tire includes an inner liner and the radio device is positioned radially inward of the inner liner with the second layer against the inner liner and the first rubber layer facing radially inward and not against the inner liner.
A method for curing a tire with an electronic communication module, the method comprising
- providing an uncured tire carcass and an electronic communication module including an enclosed radio device positioned between a first rubber layer and a second rubber layer,
- wherein the first rubber layer is comprised of 100 parts of at least one diene-containing rubber, at least one filler, and a cure package and the first rubber layer has a T50 cure time T50-1 at 160° C. of about 1.5 to about 3.5 minutes,
- wherein the second rubber layer is comprised of at least one diene-containing rubber, at least one filler, and a cure package, and the second rubber layer has a T50 cure time T50-2 at 160° C. that is greater than T50-1 and is about 2.5 to about 5 minutes,
- wherein the first and second rubber layers each independently have a thickness of about 0.4 to about 3 mm, and
- wherein the tire includes an inner liner and the radio device is positioned radially inward of the inner liner with the second layer against the inner liner and the first rubber layer facing radially inward and not against the inner liner, and
- positioning the enclosed radio device against the inner liner, and then curing the uncured tire carcass together with the enclosed radio device.
Dependencies are inferred from the claim text.