The following definitions will give you a general understanding of some of the terminology used in the rope industry. There are also other definitions that are industry specific, but for the purposes of explanation these definitions are derived from the Cordage Institute International Standard: CI 1202-03 “Terminology for Fiber Rope used in Standards and Guidelines”. Not all definitions are verbatim and have been simplified to allow for clearer understanding.
This term refers to the ability of a fiber or rope to withstand wear and rupture due to motion against other fibers or rope components.
Aramid Fiber is a manufactured, high modulus fiber of Polyphenyleneterepthalamide (PPTA).
Block creel is a fabrication method. This method is used to produce the longest rope length on a designated rope manufacturing machine without splicing or knotting of any of its components.
This term refers to the intertwining of strands in a braiding process to produce a rope structure.
Braid (Double) is a rope constructed from an inner hollow braided rope(core) surrounded by another hollow braided rope(cover). Also called Braid-on-Braid or 2 in 1.
Braid (hollow) is a single braided rope having a hollow centre.
Braid pattern refers to a description of the manner in which the strands of a braided rope are intertwined.
Braid (single) is a hollow braid consisting of multiple strands which may be braided in a plain or twill pattern.
Braid (solid) is a cylindrical braid. In this braid each strand alternately passes under and over one or more of the other strands of the rope while all strands are rotating around the axis with the same direction of rotation.
This term refers to the maximum force (or load) applied to a single specimen in a tensile test carried to rupture.
This term refers to the breaking force of a rope which has been cycled from initial tension to a specific peak cyclic force for specified number of cycles before the break test.
This term refers to the breaking force of a rope, which has not been cycled before the break test.
The breaking length is the calculated length of a specimen whose weight is equal to the breaking load.
A yarn composed of different materials.
Coil refers to a means of packaging rope without the use of a reel or spool, by arranging the rope in concentric circles about a common axis to form a cylinder secured with lashings.
A cord is a small laid, plaited or braided item of cordage usually between 5/32”(4mm) and 3/8”(10mm) diameter.
Cordage is a collective term for twines, cords and rope made from textile fibers and yarns.
A textile product placed in the center of a rope and serving as a support for the strands around it.
A time dependent increase in length, while under a continuing load. Length that cannot be recovered is known a creep.
Dynamic load refers to any rapidly applied force that increases the load on the rope significantly above the normal static load or changes its properties when lifting or suspending a weight.
Elasticity refers to the property of a material by which it tends to recover its original size and shape immediately after removal of the load causing the deformation.
Elongation refers to the ratio of the extension of a rope, under an applied load, to the length of the rope prior to the application of the load expressed as a percentage.
Extension is the “deformation”(change in length) of a rope when a load is applied.
A long, fine, very flexible structure that may be woven, braided, or twisted into fabric, twine, cordage or rope.
A term used to describe a fiber or yarn that has been heat treated to reduce the tendency to shrink or elongate under load at elevated temperature.
High Tenancity generally refers to an industrial fiber with a tenacity greater than 6 gram/denier or one whose tenacity is significantly greater than that normally found in a particular generic class of fiber.
A rope designed consisting of two elements: an interior core (kern) and an outer sheath (mantle). The core supports the majority portion of the load; and be of parallel strands, braided strands or braided. The sheath serves primarily to protect the core and also supports a portion of the load. There are three types: static, dynamic and low stretch.
A means of distinguishing one rope from another or one manufacturer from another by the use of yarns, tapes or other markers in a rope, either external or internal.
A marker placed on the surface of a rope, in a defined pattern, running the entire length of the rope.
A marker placed inside a rope and running the entire length of the rope.
A yarn consisting of one or more heavy, coarse, continuous filaments produced by the spinning of a polymeric material suitable for fiber production.
A yarn consisting of many fine continuous filaments produced by the spinning of a polymeric material suitable for fiber production.
A manufactured fiber in which the fiber forming substance (polymide) is characterized by recurring amide groups as an integral part of the polymer chain. The two principal types of nylon fiber used in rope production are type 66 and type 6. The number “6” in the type designation is indicative of the number of carbon atoms contained in the reactants for the polymerization reaction.
This term refers to fibers that have an average tenacity between 7.0 and 15.0 grams/denier.
A manufactured fiber in which the fiber-forming substance (polyester) is characterized by a long chain polymer having 85% by weight of and ester? a substituted aromatic carboxylic acid. The most frequently used acid is terephthalic acid in the presence of ethylene glycol.
A spool of large capacity on which rope is wound for storage or shipment.
A single braided rope produced on a 12-carrier machine where the strands may be intertwined in a twill or plain pattern.
A rope manufactured from two or more types of fiber.
A compact but flexible, torsionally balanced structure produced from strands which are laid, plaited or braided together to produce a product which serves to transmit a tensile force between two points.
A rope, which is mandated, supplied and/or used to support or protect a human life.
A rope with an elongation greater than 6% and less than 10% (at 10% of its minimum breaking strength).
A rope with a maximum elongation of 6% (at 10% of its minimum breaking strength).
This term refers to the joining of two ends of yarn, strand or cordage by intertwining or inserting these ends into the body of the product. An eye splice may be formed by using a similar process to join one into the body of the product.
An end termination in the form of a loop in a rope, cord or twine to facilitate its testing and/or use regardless of construction.
A spool is a flanged cylinder with an axial hole on which rope is wound for storage or shipment.
The stand is the largest individual element used in the final rope marking process and obtained by joining and twisting together several yarns or groups of yarns.
Strength refers to the ability to resist force.
The tensile stress expressed as the force per unit linear density of the unstrained specimen.
Tension refers to a force applied along the axis of a material.
The number of turns about the axis applied to a fiber, yarn, strand or rope over a given length to combine the individual elements into a larger and stronger structure. The direction of rotation about the axis is denoted as “S” (left hand) or “Z” (right hand) twist.
The process of combining two or more parallel, textile elements by controlling the lineal and rotational speeds of the material to produce a specific twist level.
Sunlight or artificial light just beyond the visible end of the visible spectrum of light, which can cause damage to some synthetic and natural fibers.
Limiting load values derived from the minimum breaking strength of a cord or rope divided by the design factor.
The working load that must not be exceeded for a particular application as established by a regulatory or standards setting agency.
A generic term for a continuous collection of textile fibers, filaments or material in a form suitable for intertwining to form a textile structure via any one of a number of textiles processes.
Redpoint Ropes will once again be attending the Toronto international Boat Show 2017. We will be located in booth G-450.
We will be selling our premium handmade dock and anchor lines. As well, we will be launching some new colours available on our rigging lines. Customers who take advantage of this show will be saving 10-50% off their purchases.
Note: We will also have running rigging products available. However, due to our limited booth size we can only bring the most popular items to the show. If you are looking to rig your sail boat for the 2017 season please have a list of sizes and lengths you require when you come to our booth. If you purchase your rigging at the show you will be able to take advantage of the boat show specials.