Tire and tire production method
AssigneeBridgestone Corporation
InventorYuji ASANO
Life of this patent
Estimating the term…
Abstract
The provide is an tire and an tire production method for the tire, wherein the carcass ply is comprised of tape-like members arranged in the tire circumferential direction, in which a plurality of carcass cords arranged parallel to each other are coated with rubber; the tape-like member has a tape width of 1 to 10 mm; on the tire equatorial plane, two of the tape-like members adjacent to each other in the tire circumferential direction are butted against each other at tire circumferential ends thereof; and at the end portions of the carcass ply, two of the tape-like members adjacent to each other in the tire circumferential direction overlap each other only at rubber portions thereof.
Claims4
A tire comprising a pair of bead portions, and
- one or more carcass plies straddling between the pair of bead portions in a toroidal shape, wherein
- the carcass ply is comprised of tape-like members arranged in the tire circumferential direction, in which a plurality of carcass cords arranged parallel to each other are coated with rubber,
- the tape-like member has a tape width of 1 to 10 mm,
- on the tire equatorial plane, two of the tape-like members adjacent to each other in the tire circumferential direction are butted against each other at tire circumferential ends thereof, and
- at the end portions of the carcass ply, two of the tape-like members adjacent to each other in the tire circumferential direction overlap each other only at rubber portions thereof.
A tire production method for a tire comprising a pair of bead portions and a carcass consisting of one or more carcass plies straddling between the pair of bead portions in a toroidal shape, wherein
- the method includes a raw tire forming process:
- using a toroidal-shaped rigid core with a tire forming surface that forms a luminal surface of the tire on its outer surface, and sequentially attaching unvulcanized tire components including carcass plies on the tire forming surface of the rigid core to form a raw tire,
- the raw tire forming process includes a carcass ply forming process:
- forming the carcass ply on the tire forming surface of the rigid core, the carcass ply forming process includes an attaching process:
- attaching tape-like members with a tape width of 1 to 10 mm, in which a plurality of carcass cords arranged parallel to each other are coated with rubber, sequentially in the tire circumferential direction to form a carcass ply comprised of the tape-like members arranged in the tire circumferential direction, and
- in the attaching process, on the tire equatorial plane, two of the tape-like members adjacent to each other in the tire circumferential direction are attached so that they are butted against each other at tire circumferential ends thereof, and at the end portions of the carcass ply, two of the tape-like members adjacent to each other in the tire circumferential direction are attached so that they overlap each other only at rubber portions thereof.
Dependencies are inferred from the claim text.