Pneumatic Tire and Method for Manufacturing Same
Provided are a pneumatic tire with improved air dispersibility in a reinforcing layer including steel cords during vulcanization and with effectively suppressed blistering, and a method of manufacturing the same. In the pneumatic tire according to the present technology including a reinforcing layer ( 10 ) including a plurality of aligned steel cords ( 11 ) coated with coating rubber ( 12 ), at least one thread ( 13 ) for extending in a longitudinal direction of the steel cords ( 11 ) is disposed between the steel cords ( 11 ) in the coating rubber ( 12 ).
1 . A pneumatic tire comprising:
a reinforcing layer including a plurality of aligned steel cords coated with coating rubber, wherein
at least one thread for extending in a longitudinal direction of the steel cords is disposed between the plurality of aligned steel cords in the coating rubber.
2 . The pneumatic tire according to claim 1 , wherein the thread is constituted by a synthetic fiber or a natural fiber.
3 . The pneumatic tire according to claim 1 , wherein the thread has a tensile strength of at 100 N or less.
4 . A method of manufacturing a pneumatic tire, the method comprising:
inserting at least one thread between a plurality of aligned steel cords to extend in a longitudinal direction of the plurality of aligned steel cords, in rolling the plurality of aligned steel cords along with coating rubber between a pair of rollers, to form a reinforcing layer including the plurality of aligned steel cords and the at least one thread;
then forming a green tire comprising the reinforcing layer; and
vulcanizing the green tire.
5 . A method of manufacturing a pneumatic tire, the method comprising:
inserting at least one thread between a plurality of aligned steel cords to extend in a longitudinal direction of the plurality of aligned steel cords, in passing the plurality of aligned steel cords along with coating rubber through a die, to form a reinforcing layer including the plurality of aligned steel cords and the at least one thread;
then forming a green tire comprising the reinforcing layer; and
vulcanizing the green tire.
6 . The method of manufacturing the pneumatic tire according to claim 4 , wherein the thread is constituted by a synthetic fiber or a natural fiber.
7 . The method of manufacturing the pneumatic tire according to claim 4 , wherein the thread has a tensile strength of 100 N or less.
8 . The method of manufacturing the pneumatic tire according to claim 5 , wherein the thread is constituted by a synthetic fiber or a natural fiber.
9 . The method of manufacturing the pneumatic tire according to claim 5 , wherein the thread has a tensile strength of 100 N or less.
10 . The method of manufacturing the pneumatic tire according to claim 6 , wherein the thread has a tensile strength of 100 N or less.
11 . The pneumatic tire according to claim 2 , wherein the thread has a tensile strength of 100 N or less.