| 摘要 |
Multistrand metal cord of K×(L+M) construction, which can especially be used for reinforcing tire belts for industrial vehicles, consisting of K elementary strands assembled in a helix, with a helix pitch PK, each elementary strand: consisting of a cord (10) having two layers (Ci, Ce) of L+M construction, rubberized in situ, comprising an inner layer (Ci) consisting of L wires (11) of diameter d1, L varying from 1 to 4, and an outer layer (Ce) of M wires (12), M being equal to or greater than 5, of diameter d2, which are assembled in a helix with a pitch p2 around the inner layer (Ci); and having the following characteristics (d1, d2 and p2 being expressed in mm): 0.10<d1<0.50; 0.10<d2<0.50; 3<p2<10; its inner layer (Ci) is sheathed with a rubber composition (14) called a “filling rubber”; over any entire length of the elementary strand (10) equal to K times PK, the filling rubber is present in each of the capillaries (15) delimited by the L wires (11) of the inner layer (Ci) and the M wires (12) of the outer layer (Ce), and also, when L is equal to 3 or 4, in the central channel (13) delimited by the L wires (11) of the inner layer (Ci); the amount of rubber filling (14) compound in said elementary strand is between 5 and 40 mg per g of elementary strand. |
