Abstract:
Metal cord with a plurality of concentric layers, of the type rubberized in situ, i.e. a cord that is rubberized from the inside, during its actual manufacture, with a rubber known as a filling rubber, in which all or some of the gaps situated between the wires of the cord contain a thermoplastic elastomer of the unsaturated type, particularly an unsaturated thermoplastic stirene (TPS) elastomer such as an SBS, SBBS, SIS or SBIS block copolymer for example. Such a thermoplastic elastomer, used in the molten state, presents no problems of parasitic stickiness if the filling rubber overspills out of the cord following manufacture; its unsaturated and therefore (co)vulcanizable nature makes it extremely compatible with the diene rubber matrices, notably natural rubber matrices as conventionally used as calendering rubber in the metal fabrics intended for reinforcing tires.
Abstract:
Provided are an organopolysiloxane composition for producing a rope structure excellent in fatigue resistance, a rope structure using the same, and a process for producing the rope structure. The organopolysiloxane composition comprises an organopolysiloxane having an average polymerization degree of 50,000 to 200,000 and represented by the following formula (I): wherein X1, X2, X3 and X4 are the same or different, each independently representing —H, —OH, —COOH, —R, —NH2, —ROH, —RCOOH, or —RNH2; R representing an alkyl group or an aryl group; and each of m and n independently denotes an integer of not less than 1. The organopolysiloxane composition is applied to liquid crystalline polymer filaments in the process of producing the rope structure from the filaments.
Abstract:
Disclosed is a compensating cable adapted to be used in combination with an elevator cab, counterweight, hoist rope and traveling cable. The compensating cable is composed of a sheath, at least one elongated strength member such as a link chain or stranded wire rope, made from metal or other materials of high tensile strength disposed in the sheath and the volume of the sheath not otherwise occupied by the strength member substantially occupied by a mixture of metal particles and plastic.
Abstract:
Aramid cable of high bending strength comprising a core (1) about which are stranded synthetic threads covered by a sheath (5). According to the invention, the synthetic threads (2, 3, 4) are aramid threads core-impregnated by a resin (8) with a high abrasion resistance and a low friction coefficient. Applications: handling cables which have to undergo a high number of alternating bendings.
Abstract:
A conveyor belt includes a first outer sheet disposed on a loadbearing side of the conveyor belt, a second outer sheet disposed on a drive side of the conveyor belt, and an embedded tension-member system disposed between the two sides, which is in the form of cords running parallel in the longitudinal direction of the conveyor belt. The tension-member system includes steel and, prior to vulcanization of the conveyor belt, an expandable coating which, after vulcanization of the conveyor belt, has a pore structure provided to at least portions of the tension-member system. The sheets are formed from a polymeric material with resilient properties. In some aspects, the volume of the coating after vulcanization is from 30 to 5000% higher than prior to vulcanization. The coating may contain at least one of a blowing agent and/or microbeads.
Abstract:
A conveyor belt includes a first outer sheet disposed on a loadbearing side of the conveyor belt, a second outer sheet disposed on a drive side of the conveyor belt, and an embedded tension-member system disposed between the two sides, which is in the form of cords running parallel in the longitudinal direction of the conveyor belt. The tension-member system includes steel and, prior to vulcanization of the conveyor belt, an expandable coating which, after vulcanization of the conveyor belt, has a pore structure provided to at least portions of the tension-member system. The sheets are formed from a polymeric material with resilient properties. In some aspects, the volume of the coating after vulcanization is from 30 to 5000% higher than prior to vulcanization. The coating may contain at least one of a blowing agent and/or microbeads.
Abstract:
Method for manufacturing a metal cord with three concentric layers including a first layer of diameter dc made up of M wire(s) of diameter d1, around which layer are wound together as a helix at a pitch p2, as a second layer, N wires of diameter d2, around which are wound as a helix at pitch p3, as a third layer, P wires of diameter d3. The N wires of the second layer are assembled around the layer to form, at a point called “assembling point”, an intermediate cord called “core strand” of M+N construction; upstream and/or downstream of the assembling point, the layer and/or the core strand is sheathed with a rubber or rubber composition by passing through at least one extrusion head; then the P wires of the third layer are assembled around the core strand to form a cord of M+N+P construction thus rubberized from the inside.
Abstract:
Method for manufacturing a metal cord with three concentric layers including a first layer of diameter dc made up of M wire(s) of diameter d1, around which layer are wound together as a helix at a pitch p2, as a second layer, N wires of diameter d2, around which are wound as a helix at pitch p3, as a third layer, P wires of diameter d3. The N wires of the second layer are assembled around the layer to form, at a point called “assembling point”, an intermediate cord called “core strand” of M+N construction; upstream and/or downstream of the assembling point, the layer and/or the core strand is sheathed with a rubber or rubber composition by passing through at least one extrusion head; then the P wires of the third layer are assembled around the core strand to form a cord of M+N+P construction thus rubberized from the inside.
Abstract:
Metal cord with three concentric layers including a first layer of diameter dc made up of M wire(s) of diameter d1, around which are wound as a helix at a pitch p2, as a second layer, N wires of diameter d2, around which are wound as a helix at pitch p3, as a third layer, P wires of diameter d3. Some gaps or capillaries in the cord situated between the core and the second layer and between the core wires themselves when M is greater than 1 and between the N wires of the second layer and the P wires of the third layer, contain a filling rubber based on an unsaturated thermoplastic elastomer