Assertion: pneumatic radial tire | /r/HasAspect | a belt reinforcement layer
Facets:
Source sentences:
text: This invention relates to a pneumatic radial tire, which has a belt reinforcement layer consisting of a layer of steel cords and a layer of aromatic polyamide fiber cords having its side ends turned over toward each other, and which is characterized in that the diameter of the cords in the layer of aromatic polyamide fiber cords, the number of these cords in use and the properties of covering rubber are specifically set to thereby improve the durability of the tire, especially, the durability in bent portions of the aromatic polyamide fiber cords.
text: In general, conventional pneumatic radial tires for passenger vehicles have a carcass layer in which a synthetic fiber such as nylon fiber and polyester fiber is used as material for the cords therein, and a belt reinforcement layer consisting of two steel belt layers in which the cords in one layer cross those in the other.
text: An object of the present invention is to improve the durability of a belt reinforcement layer, and more particularly, to greatly suppress the occurrence, in a pneumatic radial tires for passenger vehicles having a belt reinforcement layer comprising a steel cord layer and a layer of aromatic polyamide fiber cords having its side ends bent or turned over toward each other, of separation likely at or about the point of bending or turning of the layer of aromatic polyamide fiber cords.