摘要:
A tire includes a round tire frame made of a resin material, and the resin material includes a thermoplastic polyamide-based elastomer including an ester bond within a molecule thereof. The thermoplastic polyamide-based elastomer has a ratio by mass (HS/SS) of hard segment (HS) to soft segment (SS) of from 54/46 to 90/10.
摘要:
A press-up member presses a movable member upward, thus raising a pressing member. A support block is moved forward by means of the press-up member and a moved member. Due to the cam action brought about by such movement, the pressing member is arranged above a filler on a balloon of a molding drum. Then, the press-up member is lowered to press a distal end section of the filler onto the balloon. In this state, the molding drum is rotated to mold the filler in an annular shape. The pressing member is then separated from the filler and the pressing member is arranged at a standby position outside the molding drum. The press-up member and the moved member are separable from each other and, in the separated state, the molding drum is independently rotatable.
摘要:
A press-up member presses a movable member upward, thus raising a pressing member. A support block is moved forward by means of the press-up member and a moved member. Due to the cam action brought about by such movement, the pressing member is arranged above a filler on a balloon of a molding drum. Then, the press-up member is lowered to press a distal end section of the filler onto the balloon. In this state, the molding drum is rotated to mold the filler in an annular shape. The pressing member is then separated from the filler and the pressing member is arranged at a standby position outside the molding drum. The press-up member and the moved member are separable from each other and, in the separated state, the molding drum is independently rotatable.
摘要:
A process and apparatus are provided for making a bead wire and bead zone filler for a vehicle tire. The apparatus has a rotatable drum and deformable tubular member disposed on the drum. The external surface of the tubular member is adapted to receive a strip of elastomeric material to be shaped into the bead zone filler. The tubular member is changed from tubular to annular shape with a fluid under pressure.
摘要:
Tire frame step portions 18 are formed to a tire frame member 17. The tire frame step portions 18 are formed further toward the tire equatorial plane side than tire axial direction end portions 30A of a tread member 30. Covering layers 24 are formed at the outside of the tire frame member 17 so as to span from bead portions to the tire frame step portions 18.
摘要:
A tire includes a circular tire frame formed of a resin material, the resin material including a polyamide-based thermoplastic elastomer having a weight average molecular weight of from 15,700 to 75,000.
摘要:
A tire having a tread including first and second reinforcement plies disposed between at least one carcass ply and the tread and at least one of the sidewalls of the tire. A method for making a tire body ply is also described. The method includes delivering a first rubber coating, at least one insert, a body fabric, and a second rubber coating to a bite formed by at least two calendering rollers. The method further includes pressing the first rubber coating, the body fabric, the at least one insert, and the second rubber coating through the bite and then between the at least two calendering rollers to form a tire body ply. In another embodiment, the method includes spacing a first insert from a center of the tire body ply by a first distance and a second insert from the center of the tire body ply by a second distance.
摘要:
A filler-provided bead forming apparatus include a cylindrical drum, a transport device for transferring a belt-shaped filler to the proximity of one end of the drum, a pair of grasping units for grasping both ends of the filler arranged on the transport device, respectively, and moving device for moving the grasping units grasping the filler and wrapping the filler around the drum such that the filler is lying on the drum and a bottom end of the filler on a thicker side thereof is in register with the one end of the drum and further for butt joining longitudinal ends of the filler. The apparatus further includes a transfer device for transferring a bead to the one end of the drum, a bladder provided on the drum for raising the filler wound around the drum about the bottom end of the filler on the thicker side thereof upon being expanded to bring the bottom end of the filler into contact with an outer circumference of the bead, and a pressure-joining device for urging the bottom end of the filler against the bead to pressure-join them.
摘要:
A tire includes a circular tire frame formed of a resin material, the resin material including a polyamide-based thermoplastic elastomer having a weight average molecular weight of from 15,700 to 75,000. Included with the tire may be side portions and a crown portion that serves as an outer peripheral portion that is in communication with the side portions.
摘要:
A tire includes a round tire frame made of a resin material, and the resin material includes a thermoplastic polyamide-based elastomer including an ester bond within a molecule thereof. The thermoplastic polyamide-based elastomer has a ratio by mass (HS/SS) of hard segment (HS) to soft segment (SS) of from 54/46 to 90/10.