Floating linear tension member comprising multiple fibers
AssigneeTeijin Aramid B.V.
InventorsMattheus Van Leeuwen, Huibert Kwint, Stephanus Willemsen
Life of this patent
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Abstract
Linear tension member having multiple fibers and at least 0.1 wt % of solid hydrophobic organic nanoparticles with a mean diameter of 10-300 nm and a standard deviation σ of at least 10% of the mean value, which linear tension member has a linear mass density of at least 10.000 dtex and has at least 80 wt % of fibers having a mass density higher than 1 g/cm3. The disclosure also pertains to the use of such particles for making a linear tension member buoyant and to a process to manufacture a floating linear tension member.
Claims14
A floating linear tension member comprising multifilament yarns comprising multiple fibers and at least 0.1 wt % of solid hydrophobic organic nanoparticles based on a weight of the fibers of the linear tension member, wherein
- a mean diameter of the solid hydrophobic organic nanoparticles ranges from 10 to 300 nm,
- a standard deviation σ of the solid hydrophobic organic nanoparticles is at least 10% of the mean diameter, and
- the linear tension member is selected from ropes, lines, tethers, mooring lines, tow lines, or cables and has a linear mass density of at least 5 Mtex and a diameter of 20 mm to 500 mm, and comprises at least 80 wt % of fibers having a density higher than 1 g/cm3, wherein the yarns are combined by braiding, twisting, beading, spiraling, entangling, knitting, stranding, or any combination thereof, to result in a densified linear tension member having a higher density than before the combination.
A floating linear tension member comprising:
- multifilament yarns comprising multiple fibers;
- and
- at least 0.1 wt % of solid hydrophobic organic nanoparticles based on a weight of the fibers of the linear tension member, wherein
- a mean diameter of the solid hydrophobic organic nanoparticles ranges from 10 to 300, nm,
- a standard deviation σ of solid hydrophobic organic nanoparticles is at least 10% of the mean diameter,
- a linear mass density of the linear tension member of at least 5 Mtex,
- the yarns are combined by braiding, twisting, beading, spiraling, entangling, knitting, stranding, or any combination thereof, to result in a densified linear tension member having a higher density than before the combination, and
- the linear tension member is selected from ropes, lines, tethers, mooring lines, tow lines, or cables and is buoyant in water and aqueous solutions, and has a diameter of 20 mm to 500 mm.
A process to manufacture a floating linear tension member selected from ropes, lines, tethers, mooring lines, tow lines, or cables having a linear mass density of at least 5 Mtex, and a diameter of 20 mm to 500 mm, the processes comprising:
- combining multiple fibers or multifilament yarns,
- wherein at least one fiber or yarn of the combination is supplied with solid hydrophobic organic nanoparticles with a mean diameter of 10-300 nm and a standard deviation σ of at least 10% of the mean value,
- wherein the amount of solid hydrophobic organic nanoparticles is at least 0.1 wt % based on a weight of the linear tension member,
- wherein the yarns or fibers are combined by braiding, twisting, beading, spiraling, entangling, knitting, stranding, or any combination thereof, to result in a densified linear tension member having a higher density than before the combination.
Dependencies are inferred from the claim text.