Abstract:
An object of the present invention is to make it possible to provide a cord, in particular, a cord for reinforcing a rubber article in which rubber permeation properties are improved by coating filaments as constituents of the cord with rubber in a reliable and stable manner. The cord of the present invention is produced by, when the metal filament is guided to an extruder and extruded together with rubber from a mouthpiece of the extruder so that the metal filament is coated with the rubber, juxtaposing plural metal filaments in the mouthpiece and extruding the metal filaments together with rubber.
Abstract:
A steel cord for reinforcing rubber articles in which sheath wires are not deviated and which has an excellent rubber penetration property and a tire which has an excellent durability using the steel cord is provided.A steel cord for reinforcing rubber articles composed of a core 10 composed of two untwisted steel wires 1 and six sheath wires 2 which are twisted around the core 10 is disclosed. The average of gap distances between the adjacent sheath wires 2 is 24 μm or larger, and the occupancy of the sheath wires 6 disposed around the core 10 with respect to a sheath wire disposition area is 80% or larger. A pneumatic tire in which the steel cord is applied on both a carcass and (a) belt layer(s) or applied on either the carcass or the belt layer(s) is also disclosed.
Abstract:
The present invention relates to a three-layered metal cable of construction L+M+N usable as a reinforcing element for a tire carcass reinforcement, comprising an inner layer C1 having L wires of diameter d1 with L being from 1 to 4, surrounded by an intermediate layer C2 of M wires of diameter d2 wound together in a helix at a pitch p2 with M being from 3 to 12, said layer C2 being surrounded by an outer layer C3 of N wires of diameter d3 wound together in a helix at a pitch p3 with N being from 8 to 20, said cable being characterised in that a sheath formed of a cross-linkable or cross-linked rubber composition based on at least one diene elastomer covers at least said layer C2. The invention furthermore relates to the articles or semi-finished products made of plastics material and/or rubber which are reinforced by such a multi-layer cable, in particular to tires used in industrial vehicles, more particularly heavy-vehicle tires and their carcass reinforcement plies.
Abstract translation:本发明涉及可用作轮胎胎体加强件的增强元件的结构L + M + N的三层金属电缆,包括:具有直径d1的L线的内层C1,L为1至4,被 直径为d2的M线的中间层C2以螺距p2以螺距p2缠绕在一起,间距p2为M为3至12,所述层C2被缠绕在一起的直径为d3的N线的外层C3围绕,螺旋线为 间距p3,其N为8至20,所述电缆的特征在于由基于至少一种二烯弹性体的可交联或交联的橡胶组合物形成的护套至少覆盖所述层C2。 本发明还涉及由这种多层电缆增强的塑料材料和/或橡胶制成的制品或半成品,特别是工业车辆中使用的轮胎,特别是重型车辆轮胎及其胎体增强件 层
Abstract:
An object of the present invention is to make it possible to provide a cord, in particular, a cord for reinforcing a rubber article in which rubber permeation properties are improved by coating filaments as constituents of the cord with rubber in a reliable and stable manner. The cord of the present invention is produced by, when the metal filament is guided to an extruder and extruded together with rubber from a mouthpiece of the extruder so that the metal filament is coated with the rubber, juxtaposing plural metal filaments in the mouthpiece and extruding the metal filaments together with rubber.
Abstract:
Steel cord includes a first group and a second group. The second group is helically twisted around the first group with a cord twisting step. The first group includes a first number of first steel filaments. The first number ranges between three and eight. The second group comprises a second number of second steel filaments. The second number is equal to or greater than the first number. The first filaments having a twist step greater than 300 mm. At least one of the second filaments is polygonally performed in order to allow rubber penetration.
Abstract:
A tire cord having core filaments preformed into a helical configuration while maintaining the core filaments in a parallel, side-by-side relationship. The core filaments are not twisted or stranded together. High tensile strength sheath filaments are also preformed into a flattened helical configuration so that the sheath filaments can be wrapped around the side-by-side core filaments such that the sheath filaments do not put such tension on the core filaments as to cause the core filaments to bunch. The core filaments are maintained in a flat, side-by-side configation so that no voids are formed and rubber can penetrate into the tire cord. The core filaments may number from three to six and the sheath filaments from one to seven. The cross-section of the tire cord is flattened and confined within an oval-shaped outer bound, the oval outer bound being characterized by a major axis and a minor axis. It is desirable that the minor axis be no greater than 60% of the major axis to created the appropriate difference in the bending modulus of the tire cord in the horizontal versus the vertical direction.
Abstract:
A reinforcement for a building works structure comprising an assembly of solid wires. The wires are mutually parallel to form a bundle and the reinforcement comprises a sheath made of plastic material enclosing the bundle and providing it with cohesion.
Abstract:
A steel cord comprises a core of three or more filaments bundled without twisting and a sheath of at least one layer comprised of plural filaments wound around the core, wherein all core filaments are arranged in a given rectangle at any section in its longitudinal direction. Such steel cords are used in a belt of a pneumatic tire. And also, these cords are produced by a tubular-type twisting machine having a specified structure.
Abstract:
A steel cord for the reinforcement of rubber articles has a three-layer twisting structure comprising a core of 2 steel filaments, a middle sheath layer of 6 steel filaments and an outer sheath layer of 11 steel filaments, in which a ratio of filament diameter ds in the middle and outer sheath layers to filament diameter dc in the core (ds/dc) is within a range of 1.15-1.5 and a twisting pitch of the core is not less than 20 mm, and is used as a reinforcing member in a heavy duty pneumatic radial tire, conveyor belt and the like.
Abstract:
A bead ring for tubeless pneumatic tires is disclosed. The bead ring includes a core formed by a plurality of wires or a solid shaped structure and is constructed of a non-elastic material. A plurality of layers of helically wound, closely spaced wires surround the core, and the wires of each layer are oppositely pitched with respect to the wires of adjacent layers. The combination of the core and the layers of wires form a bead bundle having a generally semi-circular cross-section. This abstract is not to be taken either as a complete exposition or as a limitation of the present invention. The full nature and extent of the invention is discernible only by reference to, and from, the entire disclosure.