| 摘要 |
PROBLEM TO BE SOLVED: To provide metallic cord for tires, improved in rubber infiltration into the core while securing both of the pliancy and compactness of the cord so as to improve its corrosion-proofness and core-coming out property. SOLUTION: The metallic cord for tires has such a structure as to comprise a core 12 where a single wire bundle 11 with n(2-5) metallic wires Fc are arranged in parallel is subjected to torsion and a sheath 13 consisting of more than n metallic wires Fs and helically wrapped around the core 12. In the metallic cord, the wire bundle 11 is formed of a bundle 11A preformed in a two-dimensionally wavy fashion with the bundle itself repeating mountain portions 15 and valley portions 16 or a bundle 11B with the bundle itself preformed in a helical fashion while keeping a bundle condition with the metallic wires Fc arranged parallel to one another, in a state prior to applying the torsion. The bundles 11A and 11B meet the following relationships: (1) 10.0×D1≤P≤50.0×D1; (2) 0.1×D1≤h≤2.5×D1; and (3) 0.5≤(h/P)×100≤13.0 (wherein, D1 is the diameter of each of the metallic wire; P is a preforming pitch; and h is a preforming height). COPYRIGHT: (C)2007,JPO&INPIT
|
