Assertion: radial tire's cord | /r/HasProperty | disposed at 70°
Facets:
value: to 90°
type: OTHER
Source sentences:
text: According to the present invention, there is provided a process for making a pneumatic tire comprising a first step of stretching and forming a carcass having one or more rubberized carcass plies directly on a cylindrical former followed by securing a pair of highly flexible side rubber layers to said carcass, each of said carcass plus consisting of cords disposed at 70° to 90° to the equatorial direction of the tire, said side rubber layers each having a Shore A hardness of 40° to 55° upon vulcanization; a second step of forming a green case by flexing the carcass thus formed into a toroidal shape followed by securing a rubberized breaker layer and a tread rubber layer to the crown portion of the carcass, said breaker layer consisting of cords disposed at 10° to 30° to the equatorial direction of the tire, said tread rubber layer consisting of a central body portion made of a highly abrasion-resistant rubber material with a Shore A hardness of 55° to 75° upon vulcanization and a pair of edge portions made of the same rubber material as said side rubber layer and integrally pre-bonded to said central body portion prior to said second step, said edge portions of the tread rubber layer being bonded to said side rubber layers after securing of the tread rubber layer to the crown portion of the carcass; and a third step of vulcanizing the green case thus formed.
text: The present invention also provides a pneumatic tire comprising a pair of beads, a carcass extending from one of the beads to the other and consisting of at least one rubberized carcass ply having cords disposed at 70° to 90° to the equatorial direction of the tire, and a pair of sidewall rubber layers secured to the outer surfaces of opposing sidewalls of the carcass, said sidewall rubber layers having a Shore A hardness of 40° to 55°, upon vulcanization rubberized breaker layer secured to the outer surface of the crown portion of the carcass and consisting of cords disposed at 10° to 30° to the equatorial direction of the tire, and a tread rubber layer secured to the outer surface of the breaker layer and having a Shore A hardness of 55° to 75° upon vulcanization boundary between the sidewall rubber layer and the tread rubber layer in a cross section of the tire defined by a radial plane emanating from the axis of rotation of the tire comprising two line segments which intersect with each other at an acute angle with the tread rubber being disposed within the acute angle.