Abstract:
Steel cables are utilized for reinforcing a wide variety of rubber articles. For instance, pneumatic tires are normally reinforced with steel tire cords. It is important for such reinforcing cables to exhibit good fatigue and corrosion resistance. It has been unexpectedly found that the fatigue and corrosion resistance of such cables can be improved by incorporating syndiotactic-1,2-polybutadiene into the interstices between the steel filaments in such cables. This invention more specifically relates to a cable for reinforcing rubber articles having improved fatigue and corrosion resistance which is comprised of a plurality of steel filaments and syndiotactic-1,2-polybutadiene, wherein the syndiotactic-1,2-polybutadiene is dispersed within interstices between said steel filaments.
Abstract:
A corrosion resistant rope in which the individual strands are sealed with a plastic foam impregnant and surrounded with a dense unfoamed plastic material is made by applying a foamable plastic to the individual wires of a series of wire strands, or, alternatively, to the individual strands as a whole, and closing the strands into a rope in a closing die while passing a nonfoamable plastic material into the closing die. Sealed plastic foam impregnated wire strands can be made in the same manner by passing nonfoamable plastic material into the stranding die during fabrication of the strand.
Abstract:
A flexible floatable cord for use in fishing nets, trawls, water skiing and the like, which comprises a braided sleeve, a core of continuous filament threads incorporated therein and particles of an expanded plastic material disposed between said sleeve and said core, said particles being only attached to one another and to the sleeve and the core and forming a continuous cord in which the core is embedded. Further a process and an apparatus for producing said flexible floatable cord.
Abstract:
Provided is an elastomer reinforcement cord with improved rust resistance. An elastomer reinforcement cord 10 includes metal filaments and a polymer material. The elastomer reinforcement cord 10 has a multi-strand structure which includes: at least one core strand 21 formed by twisting plural metal filaments 1a and 1b together; and two or more sheath strands 22 each formed by twisting plural metal filaments 11a and 11b together, the sheath strands being twisted together around the core strand. An intra-sheath-strand filling rate a, which is a ratio of the area of the polymer material with respect to an intra-sheath-strand gap region A, is 52% or higher, and an inter-strand filling rate b, which is a ratio of the area of the polymer material with respect to an inter-strand gap region B, is 75% or higher.
Abstract:
An elongate body adapted to bend in a single plane, comprises a rope extending within a succession of individual tubular elements closely spaced along the rope. Each element has on two opposite sides of the plane an extended section engaging a recess in its neighbouring element, the profiles of the section and recess allowing relative rotation of adjacent elements in said plane. The tubular elements thus form an exoskeleton around the rope which must be breached before the rope can be cut. The geometry of the tubular elements can be such that notwithstanding gaps, the rope cannot be readily accessed unless the exoskeleton is broken.
Abstract:
In a method for manufacturing a cable, a filling step S5 of filling a tube hole of a socket main body which is formed in a tubular shape and in which first end portions of wire rods are disposed with a mixture obtained by mixing a thermosetting resin into a preliminary mixture obtained by mixing ceramic particles and fly ash in advance is carried out.
Abstract:
Multistrand metal cable of 4×(4+M) construction, which can especially be used for reinforcing tire belts for industrial vehicles, formed from four elementary strands assembled in a helix with a helix pitch P3, each elementary strand consisting of a two-layer cable of 4+M construction comprising an inner layer C1 formed from four wires of diameter D1, assembled in a helix with a pitch P1, and an unsaturated outer layer C2 of M wires, M being greater than or equal to 8 and smaller than or equal to 11, of diameter D2, these being assembled in a helix with a pitch P2 around the inner layer C1, P1 being smaller than P2, the four wires of the inner layer C1 being wound in a helix in the same twist direction as the M wires of the outer layer C2, and wherein each of the diameters D1 and D2 is greater than or equal to 0.10 mm but less than or equal to 0.50 mm.
Abstract:
Method of manufacturing a multi-layer metal cord having a plurality of concentric layers of wires, comprising one or more inner layer(s) and an outer layer, of the type “rubberized in situ. The method includes the following steps: at least one step of sheathing at least one inner layer with the rubber or the rubber composition by passing through at least one extrusion head; and an assembling step in which the wires of the outer layer are assembled around the inner layer adjacent to it, in order to form the multi-layer cord thus rubberized from the inside. The rubber is an unsaturated thermoplastic elastomer extruded in the molten state, preferably a thermoplastic elastomer of the thermoplastic stirene (TPS) elastomer type such as an SBS, SBBS, SIS or SBIS block copolymer for example.
Abstract:
Metal cord (C-1) with two concentric layers (Ci, Ce) of M+N construction, comprising an internal first layer or core (Ci) made up of M wire(s) (10) of diameter d1, M varying from 1 to 4, around which core are wound together in a helix, in an external second layer (Ce), N wires (11) of diameter d2, in which at least some of the gaps in the cord which are situated between the wires of the various contain a filling rubber (13) based on an unsaturated thermoplastic elastomer, particularly a styrene thermoplastic elastomer (TPS) such an SBS or SIS block copolymer for example.Such a thermoplastic elastomer, when used in the molten state, presents no problems of unwanted stickiness if the filling rubber overspills outside the cord after manufacture; its unsaturated and therefore (co)vulcanizable nature makes it extremely compatible with the diene rubber, for example natural rubber, matrices usually used as calendering rubber in the metal fabrics intended for reinforcing the tyres.