A synthetic rope (20) comprises a core (22) and at least a first layer surrounding the core (22). The first layer has first layer strands (26). The core has a fluted outer surface with spaced apart helical concave grooves. Each of these grooves contacts one of the first layer strands (26). The grooves have a radius of curvature (24) that is greater than the radius of curvature (14) of a circle having a same diameter as the contacting first layer strand before twisting.

An adjustable sports rope comprised of a hollow base rope sheath and an adjustment rope. The hollow base rope sheath is a hollow sheath with at least two openings. The adjustment rope enters into the hollow base rope sheath through one of the at least two openings and exits the base rope sheath through another of the at least two openings. The one end of the hollow base rope sheath terminates at a tie point. The end of the adjustment rope disposed furthest from the hollow base rope sheath tie point is also a tie point. By creating a tensile force between the tie point of the hollow base rope sheath and the tie point of the adjustment rope, the hollow base rope sheath will tighten on the adjustment rope, holding the adjustment rope in place.

A rope structure defining first and second ends and comprising first and second directional strands defining a first and second characteristics, respectively, and at least one additional strand. The second directional strand is distinguishable from the first directional strand and the at least one additional strand is distinguishable from the first and second directional strands based on the first and second characteristics. A first adjacent portion defined by the first directional strand and a second adjacent portion defined by the second directional strand are arranged within intermediate sections of the rope structure such that the first adjacent portion(s) of the first directional strand is(are) closer to the first end of the rope than the second adjacent portion(s) of the second directional strand and the second adjacent portion is(are) closer to the second end of the rope than the first adjacent portion.

Embodiments disclose a utility model which is related to an advance utility paracord where a first plurality of strands and a second plurality of strands are braided. The first plurality of strands is braided and are made of one or more non-metallic materials. The second plurality of strands has a braided PE fishing line, a tinder line, and a thread. A non-transparent sheath encapsulates the first plurality of strands and the second plurality of strands.

A synthetic fiber rope comprising:a core, said core being a laid or braided synthetic fiber strand,a polymer layer, said polymer layer covering said core,a first layer, said first layer having at least six first synthetic fiber strands laid in a first direction surround said polymer layer, anda second layer, said second layer having at least twelve second synthetic fiber strands laid in a second direction surround said first layer.

A synthetic fiber rope comprising:a core, said core being a laid or braided synthetic fiber strand,a polymer layer, said polymer layer covering said core,a first layer, said first layer having at least six first synthetic fiber strands laid in a first direction surround said polymer layer, anda second layer, said second layer having at least twelve second synthetic fiber strands laid in a second direction surround said first layer.

Disclosed is a needle-pass paper cord (200) made of paper. The paper cord is formed by means of weaving yarn (201) made of paper, and the yarn has a cross-section that is similar to a circle formed of a thread folded to a point.

A braided structure that includes a core and a sheath is provided. The core includes a yarn formed at least in part from an aromatic polymer (e.g., an aromatic polyester/liquid crystalline polymer or an aramid polymer), and the sheath, which includes a plurality of ultra high molecular weight polyolefin yarns, is braided around the core. The sheath has an overall diameter ranging from about 60 micrometers to about 650 micrometers. Despite its small diameter, the braided structure can be creep resistant and abrasion resistant while at the same time exhibiting low elongation, a high load at break, and high stiffness. The braided structure can be used in medical applications such as sutures, load bearing orthopedic applications, artificial tendons/ligaments, fixation devices, actuation cables, components for tissue repair, etc.

A high-strength fibre rope (1) comprising a rope core as well as a sheathing indicating optical wear, wherein the sheathing comprises a sheath layer (2) made up of textile subunits (3, 4) of a first hierarchy level. An outermost sheath layer (2) is provided, wherein textile subunits (3, 4) of said outermost sheath layer of the first hierarchy level differ from each other in terms of their textile structure, and/or an outermost sheath layer and a further sheath layer underneath said outermost sheath layer are provided, and wherein the textile subunits of the first hierarchy level of said outermost sheath layer differ in their textile structure from that of said further sheath layer. The textile subunits of a lowermost hierarchy level of the rope are neither dispersed in a resin matrix in the outermost sheath layer nor in the further sheath layer arranged underneath the outermost sheath layer.

A production method for a headline sonar cable characterized by steps of: a. providing a first strength member (14); b. coupling to strength member (14) a conductor (122); c. forming a layer of polymeric material about the combination of strength member (14) and conductor (122) while ensuring that the conductor remains slack; d. forming a flow shield around the layer of polymeric material, thus forming an elongatable internally located conductive structure; and e. braiding a strength-member jacket layer (52) of polymeric material around the elongatable internally located conductive structure while ensuring that the conductor is slack when surrounded by the jacket layer (52).

For another embodiment, an optical fibre is wrapped around the exterior of the layer of polymeric material within which is enclosed a braided conductor formed about the first strength member (14). Other embodiments employ further thermo-plastic layers and further sheaths and further conductors.