# US 2014/0190611 A1 · Tire overlay composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190611 A1 - Document ID: US20140190611A1 - Status: Published application - Kind: A1 - Application number: 14/151,115 - Filed: 2014-01-09 - Published: 2014-07-10 - Earliest claimed: 2013-01-09 - Assignees: E. I. Du Pont de Nemours and Company - Applicants: E I Du Pont De Nemours and Company - Inventors: MARK ALLAN LAMONTIA - Web page: https://patentgrep.com/patent/US20140190611A1 ## CPC - B60C 9/1821: {comprising discrete fibres or filaments} - B29D 30/20: by the flat-tyre method, i.e. building on cylindrical drums - B60C 9/22: the plies being arranged with all cords disposed along the circumference of the tyre - B60C 1/00: Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition - B60C 2009/2214: {characterised by the materials of the zero degree ply cords} - B60C 2009/2223: {with an interrupted zero degree ply, e.g. using two or more portions for the same ply} - B60C 2009/2261: {Modulus of the cords} - B60C 2009/2276: {Tensile strength} - B60C 2009/2295: {with different cords in the same layer} - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES - B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00) ## Abstract A tire comprising an overlay ply wherein (i) the shoulder section of the overlay comprises an elastomer and short polymeric or non-polymeric reinforcing fibers present in an amount of from 0.1 to 10 parts fiber per hundred parts of elastomer, the short fibers having a tenacity of at least 2 grams per dtex, a modulus of at least 10 grams per dtex and a length of from 0.1 to 8 mm and wherein the fibers are aligned substantially parallel to each other in a controlled angle of orientation within the overlay wherein the orientation is selected such that it decreases tire noise, and (ii) the section of overlay in the crown of the tire comprising cords of continuous filament polymeric fibers or continuous strands of metal or combinations thereof, the cords being aligned in a circumferential direction around the tire. ## Claims ### Claim 1 A tire comprising an overlay ply, wherein (i) the shoulder section of the overlay comprises an elastomer and short polymeric or non-polymeric reinforcing fibers present in an amount of from 0.1 to 10 parts fiber per hundred parts of elastomer, the short reinforcing fibers having a tenacity of at least 2 grams per dtex, a modulus of at least 10 grams per dtex and a length of from 0.1 to 8 mm and wherein the fibers are aligned substantially parallel to each other in a controlled angle of orientation within the overlay wherein the orientation is selected such that it decreases tire noise, and (ii) the section of overlay in the crown of the tire comprising cords of continuous filament polymeric fibers or continuous strands of metal or combinations thereof, the cords being aligned in a circumferential direction around the tire. ### Claim 2 (depends on 1) The overlay of claim 1, wherein the short reinforcing fibers are in an orientation selected from the group consisting of circumferential, meridional, radial, and combinations thereof. ### Claim 3 (depends on 2) The overlay ply of claim 2, wherein the short reinforcing fibers in at least one XY or XZ layer are in a circumferential orientation. ### Claim 4 (depends on 2) The overlay ply of claim 2, wherein the short reinforcing fibers in at least one XY or YZ layer are in a meridional orientation. ### Claim 5 (depends on 2) The overlay ply of claim 2, wherein the short reinforcing fibers in at least one XZ or YZ layer are in a radial orientation. ### Claim 6 A tire comprising an overlay, wherein (i) the overlay in the crown section of the tire comprises an elastomer and short polymeric or non-polymeric reinforcing fibers present in an amount of from 0.1 to 10 parts fiber per hundred parts of elastomer, the short reinforcing fibers having a tenacity of at least 2 grams per dtex, a modulus of at least 10 grams per dtex and a length of from 0.1 to 8 mm and wherein the fibers are aligned substantially parallel to each other in a controlled angle of orientation within the overlay wherein the orientation is selected such that it decreases tire noise, and (ii) the shoulder section of the overlay of the tire comprising cords of continuous filament polymeric fibers or continuous strands of metal or combinations thereof, the cords being aligned in a circumferential direction around the tire. ### Claim 7 (depends on 6) The overlay of claim 6, wherein the short reinforcing fibers are in an orientation selected from the group consisting of circumferential, meridional, radial, and combinations thereof. ### Claim 8 (depends on 6) The overlay ply of claim 6, wherein the short reinforcing fibers in at least one XY or XZ layer are in a circumferential orientation. ### Claim 9 (depends on 6) The overlay ply of claim 6, wherein the short reinforcing fibers in at least one XY or YZ layer are in a meridional orientation. ### Claim 10 (depends on 6) The overlay ply of claim 6, wherein the short reinforcing fibers in at least one XZ or YZ layer are in a radial orientation. ### Claim 11 A tire, comprising an overlay ply absent of continuous filament polymeric fibers or continuous strands of metal wherein the overlay comprises an elastomer and short polymeric or non-polymeric reinforcing fibers present in an amount of from 0.1 to 10 parts fiber per hundred parts of elastomer, the short fibers having a tenacity of at least 2 grams per dtex, a modulus of at least 10 grams per dtex and a length of from 0.1 to 8 mm and wherein the fibers are aligned substantially parallel to each other in a controlled angle of orientation within the overlay wherein the orientation is selected such that it decreases tire noise. ### Claim 12 (depends on 11) The overlay of claim 11, wherein the short reinforcing fibers are in an orientation selected from the group consisting of circumferential, meridional, radial, and combinations thereof. ### Claim 13 (depends on 11) The overlay ply of claim 11, wherein the short reinforcing fibers in at least one XY or XZ layer are in a circumferential orientation. ### Claim 14 (depends on 11) The overlay ply of claim 11, wherein the short reinforcing fibers in at least one XY or YZ layer are in a meridional orientation. ### Claim 15 (depends on 11) The overlay ply of claim 11, wherein the short reinforcing fibers in at least one XZ or YZ layer are in a radial orientation. ### Claim 16 A method of decreasing noise generated by a tire shoulder, comprising the steps of. (a) identifying a mechanism generating the noise, (b) providing an elastomeric compound for the tire overlay, and (c) introducing into the elastomeric compound short reinforcing polymeric or non-polymeric fibers with an orientation that is adapted to reducing tire noise based on the identified mechanism in step (a). ### Claim 17 (depends on 16) The method of decreasing noise according to claim 16, further comprising the step (d) of introducing into the crown of a tire overlay, cords comprising continuous reinforcement fibers that are placed adjacent to the shoulder compound of step (c). ### Claim 18 A method of decreasing noise generated by a tire shoulder, comprising the steps of. (a) identifying a mechanism generating the noise, (b) providing an elastomeric compound for the crown of a tire overlay, (c) introducing into the elastomeric compound short reinforcing polymeric or non-polymeric fibers with an orientation that is adapted to reducing tire noise based on the identified mechanism in step (a), and (d) introducing into the shoulder of a tire overlay, cords comprising continuous reinforcement fibers that are placed adjacent to the crown compound of step (c). ### Claim 19 A process for producing a tire, comprising a composite overlay, the composite overlay further comprising: an elastomer; and from 0.1 to 10 parts per hundred parts by weight of the elastomer of short polymeric or non-polymeric fibers; the fibers being characterized as having a length of from 0.1 to 8 mm, a tenacity of at least 6 grams per dtex and a modulus of at least 10 grams per dtex, wherein a major portion of the fibers are substantially oriented in a plane substantially parallel to or orthogonal to the circumference of the tire; the process comprising the steps of (a) compounding in a high shear mixer, roll mill or extruder an uncured elastomer comprising short polymeric or non-polymeric fiber, elastomer and other additives, (b) calendering or extruding the uncured elastomer into one or more layers or sheets in which the fibers are aligned in the desired direction, (c) assembling the first stage components of a tire assembly in sequence on a drum, (d) assembling the second stage components of a tire assembly, including the sheet of step (b) being located in the shoulder section of an overlay, in sequence on a bladder press tool, and (e) placing the tire assembly in a mold and curing the elastomeric compounds by heat and pressure. ### Claim 20 A process for producing a tire comprising a composite overlay, the composite overlay further comprising: an elastomer; and from 0.1 to 8 parts per hundred parts by weight of the elastomer of short polymeric or non-polymeric fibers; the fibers being characterized as having a length of from 0.1 to 8 mm, a tenacity of at least 6 grams per dtex and a modulus of at least 10 grams per dtex, wherein a major portion of the fibers are substantially oriented in a plane substantially parallel to or orthogonal to the circumference of the tire; the process comprising the steps of (a) compounding in a high shear mixer, roll mill or extruder an uncured elastomer comprising short fiber, elastomer and other additives, (b) calendering or extruding the uncured elastomer into one or more layers or sheets in which the fibers are aligned in the desired direction, (c) assembling the first stage components of a tire assembly in sequence on a drum, (d) assembling the second stage components of a tire assembly, including the sheet of step (b) being located in the crown section of an overlay, in sequence on a bladder press tool, and (e) placing the tire assembly in a mold and curing the elastomeric compounds by heat and pressure.