摘要:
A tire (22) according to the present invention includes a pair of beads (28), a carcass (30) and a belt (32). An absolute value of an angle formed by a carcass cord of the carcass (30) with respect to a circumferential direction is equal to or greater than 60 degrees and is equal to or smaller than 90 degrees. A belt ply (50) of the belt (32) is constituted by a center portion (52) and a pair of side portions (54) positioned on an outside in an axial direction of the center portion (52). A ratio of a perimeter of the center portion (52) to that of the side portion (54) is equal to or higher than 10% and is equal to or lower than 50%. The center portion (52) includes a center cord which is spirally wound in a substantially circumferential direction and is formed of steel. The side portion (54) includes a side cord which is spirally wound in the substantially circumferential direction and is formed by an aramid fiber.
摘要:
This invention relates to a method for vulcanization-adhering a rubber composition to an adherent made from a brass or plated with a brass in the vulcanization adhesion between the rubber composition and the adherent made from the brass or plated with the brass by stably adhering a metal having a catalytic action to vulcanization adhesion reaction to the surface of the brass through a silane coupling agent as well as a reinforcing member for rubber article having an adhesion property to a coating rubber by subjecting a steel filament plated with a brass or a steel cord formed by twisting a plurality of such steel filaments to a surface treatment with a metal-containing silane coupling agent solution, and a rubber-reinforcing member composite and a pneumatic tire using such a reinforcing member for rubber article.
摘要:
The invention relates to a tyre comprising: at least one carcass-type reinforcing structure which is anchored to each side of the tyre in a bead; a reinforcing crown ply; and sidewalls which are assembled radially outwards to a running tread. The carcass-type reinforcing structure extends circumferentially from the bead towards said sidewall and is discontinuous over at least one portion of the tyre crown. The aforementioned reinforcing crown ply comprises (i) at least one primary reinforcing structure which more or less covers the entire width of the crown and (ii) at least one series of circumferential reinforcing elements which also more or less cover the entire width of the crown. The series of circumferential reinforcing elements comprises a portion of lateral circumferential reinforcing elements (46), which are disposed radially and externally in relation to the primary reinforcing structures, and a portion of median circumferential reinforcing elements (44) which are disposed radially and internally in relation to said primary reinforcing structures.
摘要:
A pneumatic tyre comprises a belt (7) disposed radially outside a carcass (6) in a tread portion (2), the belt (7) comprising two crossed plies (7A,7B) of monofilament metallic cords (10A,10B,10C) laid at angles of from 15 to 30 degrees with respect to the circumferential direction of the tyre, each monofilament cord being composed of a waved single filament, the filament having a non-circular sectional shape having an aspect ratio in a range of from 0.65 to 0.95 and a cross-sectional area in a range of 0.09 to 0.20 sq.mm.
摘要:
A medium truck tire (10) and more specifically a super single truck tire (10) includes cut belt plies (22,23,25) reinforced with steel cords which make an angle of about 20 degrees with respect to the equatorial plane. Disposed in embedded fashion between two of the belt plies (23,25) is a pair of substantially full spiral helically wound overlays (24).
摘要:
The invention concerns a tyre reinforcing layer N, consisting of reinforcing elements coated with coating products, characterised in that it comprises first C1 and second C2 layers of mutually parallel metallic elements E1, E2, coated with one or more coating products M1, M2, and, between said two layers C1 and C2, a third layer C3 of elements E3 made of textile materials coated with a coating product M3, said textile elements E3 being oriented relative to the metallic elements E1, E2 of the first two layers C1 and C2 by an angle ranging between 70 degrees and 110 degrees.
摘要:
A radial tire, especially a heavy−duty radial tire enhanced in durability, wherein a ratio W2/W1 between a belt layer width W1 on the carcass side of a small−inclination belt layer provided over 0.25−0.50 times the tread width in a tire width direction and the remaining belt layer width W2 is set to range from 1.1 to 1.3, whereby cracks, causing separation at a belt width end, are prevented from growing or progressing in the vicinity of the terminal of a cord used for a belt cord, and shortcomings in reinforcing a radial tire tread are overcome.