Abstract:
A metal cord for reinforcing rubber articles and a pneumatic tire including metal cords to reinforce tire components such as carcass, breaker and band are disclosed, wherein a metal cord according to one aspect of the present invention comprises filaments having a tensile strength of from 4000 to 5500 N/sq.mm and a diameter of from 0.10 to 0.35 mm and the filaments are twisted together, the filaments before twisted are two-dimensionally waved so that the elongation after fracture of the cord becomes in a range of from 2 to 6%. According to another aspect of the present invention, the metal cord is a single filament having a tensile strength of from 4000 to 5500 N/sq.mm and a diameter D of from 0.10 to 0.35 mm, and the filament is two-dimensionally waved so that the elongation after fracture becomes in a range of from 2 to 6%.
Abstract:
A reinforcing cord for a belt ply or a carcass ply of a pneumatic vehicle tire is provided and comprises a core filament and four to six ply filaments. The core filament is comprised of an elastically or plastically deformable polymeric material, or is encased with such a material, which fills the space surrounded by the ply filaments and/or penetrates into the gaps between the ply filaments.
Abstract:
A method of manufacturing a rubber reinforcing steel cord is provided, wherein the steel cord has a steel wire plated with metal containing copper and having on its surface an oil layer containing a cobalt compound, and includes an application step in which the oil containing a cobalt compound is applied to the steel wire or a steel cord plated with metal containing copper, and a step of twisting the steel wires.
Abstract:
A pneumatic tire comprises a cord-reinforced layer such as carcass, belt, bead reinforcing layer which is made of metallic cords, each metallic cord is made up of six to twelve metallic filaments whose diameter is in a range of from 0.15 to 0.45 mm, the metallic filaments include waved filaments and unwaved filaments, each waved filament is two-dimensionally waved at a wave pitch and wave height before twisted, the wave pitch is in a range of from 5.0 to 35.0 times the diameter of the filament, and the wave height is in a range of from 0.2 to 4.0 times the diameter of the filament, and the metallic filaments are twisted together into the cord at a twist pitch of from 10 to 40 mm so that the two-dimensionally waved filaments are each subjected to a certain rotation around its axial.
Abstract:
A steel cord for reinforcing a rubber product includes a core consisting of one steel filament and a sheath consisting of a plurality of steel filaments wound around the core. The steel filament of the core alternately having straight portions, whose axes of the straight portions are disposed on one line, and protrusions formed by bending. The peak of each protrusion is disposed outside of the sheath. The steel cord for reinforcing a rubber product is used in a pneumatic tire. The pneumatic tire includes a carcass having a crown portion and having a toroidal shape, a pair of beads over which the toroidal shape extends, a belt layer or belt layers for reinforcing the crown portion of the carcass, and rubber surrounding the carcass, the pair of bead, and the belt layer(s). The steel cord is used in the carcass and/or the belt layer(s).
Abstract:
A steel cord adapted for the reinforcement of an elastomer comprises steel filaments of a pearlitic structure. The steel cord has a plastic and elastic elongation at break of x % and a plastic and elastic elongation capability in the vulcanized elastomer of y %, the values x and y fulfilling following equation: y-0.50.ltoreq.x.ltoreq.y+0.50, which means that the total elongation at break does not fall down considerably after embedding the steel cord into an elastomer.
Abstract translation:用于增强弹性体的钢丝绳包括珠光体结构的钢丝。 钢帘线具有x%的塑性和弹性伸长率,硫化弹性体的塑性和弹性伸长率为y%,x和y的值满足以下等式:y-0.50 = x
Abstract:
A two-layered twisted steel cord for reinforcing rubber articles, comprising a core including two filaments and a sheath including six or seven filaments wound around the core, in which an average twist pitch of the core is set to be at least 30 mm, and when six filaments are used for the sheath, a ratio of diameter ds of each filament of the sheath to diameter dc of each filament of the core, �(ds/dc).times.100!, is set in a range of 58.0 %
Abstract:
Cable as suspension means for lifts. A synthetic fiber cable is connected with an elevator car or load-receiving means, with a sheathing, surrounding an outermost cable strand layer, consisting of synthetic material, preferably polyurethane, with the cable strands being twisted or laid up of individual aramide fibers, wherein each individual strand is treated with an impregnating medium for the protection of the fibers and a friction-reducing intermediate sheathing is interposed between the outermost strand layer and the inner strand layer, and in order to obtain an almost circularly shaped strand layer and increase the degree of filling of the strands, any gaps therein are augmented by filler strands.
Abstract:
A steel cord for reinforcing automobile tires is composed by intertwisting at least one material wire having small spiral-like curls and 1 to 5 straight material wires. This restricts the ratio of fracture elongation of the two kinds of material wires as well as the elongation percent of the cord at 5 kg loading and improves the stability of twist, the fatigue resistance, the penetrability of a rubber compound and the handling workability.
Abstract:
A steel cord of 1+3 structure is formed by twisting three sheath steel filaments around a single core steel filament. In this case, the three sheath steel filaments are arranged so as to satisfy conditions at a section of the sheath perpendicular to a longitudinal direction of the cord that a maximum angle of a triangle formed by connecting central points of the these filaments to each other is not less than 90.degree. but less than 180.degree. and an apex defining the maximum angle is always located on the same filament and a distance between the central point of this filament and the central point of the filament adjacent thereto is 1.0-1.3 times of the diameter of the filament.