Pneumatic tire production method and pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorsYukishige Adachi, Kei Onishi
Life of this patent
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Abstract
An objective of the present invention is to reduce the development of defect during vulcanization. A method for producing a pneumatic tire comprises: a carcass ply forming step to cover both surfaces of a code array made of the carcass cords of the carcass ply with a topping rubber; a step of forming a raw cover including the carcass; and a step of vulcanizing the raw cover. The carcass ply forming step comprises an arranging process to intersect rubber-un-coated air-absorptive organic fiber cords with carcass cords of the carcass ply on at least one side of the carcass ply.
Claims8
A production method of a pneumatic tire with a carcass comprising a toroidal carcass ply extending from a tread portion through a sidewall portion to a bead core of a bead portion;
- wherein
- said method of producing a pneumatic tire comprises
- a carcass ply forming step to cover both surfaces of a code array made of the carcass cords of the carcass ply with a topping rubber,
- a step of forming a raw cover including the carcass, and
- a step of vulcanizing a raw cover;
- and
- the carcass ply forming step comprises an arranging process for arranging rubber-un-coated air-absorptive organic fiber cords on at least one side of the carcass ply so as to intersect with the carcass cords of the carcass ply.
The pneumatic tire comprising
- the toroidal carcass extending from the tread portion through the sidewall portion to the bead core of the bead portion, and
- air-absorptive organic fiber cords intersecting with the carcass cords of the carcass ply on an inner or outer surface of the carcass ply, said organic fiber cord being rubber-un-coated before vulcanization.
Dependencies are inferred from the claim text.