Method and apparatus for forming tire components using a coextruded strip
AssigneeThe Goodyear Tire & Rubber Company
InventorChristopher David Dyrlund
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Abstract
One or more embodiments of the present invention provide an apparatus for applying a mixture of a first compound and a second compound, the apparatus comprising a first extruder for processing a first compound and a second extruder for processing a second compound, wherein the outlet from the first extruder is in fluid communication with a first channel of a housing, and the outlet from the second extruder is in fluid communication with a second channel of the housing, wherein a gear pump is positioned in each channel, wherein a nozzle is in fluid communication with an outlet of the first channel and an outlet of the second channel, and a coextruded continuous strip is produced. The ratio of the first compound to the second compound may be adjusted instantaneously.
Claims9
A method for forming a coextruded strip of a first compound A and a second compound B for a tire component, the method comprising the steps of:
- extruding a first rubber compound A through a first extruder and a first gear pump and into a first passageway of a co-extrusion nozzle,
- extruding a second rubber compound B through a second extruder and a second gear pump and into a second passageway of the co-extrusion nozzle,
- wherein the co-extrusion nozzle includes an outlet, and the first and second passageways are joined together immediately upstream of the outlet of the co-extrusion nozzle, and
- wherein the first and second gear pumps are housed in a single housing.
Dependencies are inferred from the claim text.