Yale Rope Technologies, Inc.

Uniline®

Uniline® was developed by Wall Rope, Inc., to optimize strength and minimize stretch in a synthetic line. The patented Uniline® rope construction uses parallel core yarns that are bonded to each other and to the braided polyester cover. The core carries the entire load and the cover serves to protect the core from abrasion. Uniline® rope normally has a polyester core for low stretch and creep, but nylon can be substituted for special applications requiring higher stretch.

New Wear Indicator--When The Red Shows The Uniline® Goes!

Only Yale Rope Technologies Can Offer This Proprietary Product

Wear indicator Uniline® was developed as a safety precaution to guard against strength degradation. When the cover wears and the red rubber membrane is exposed, it is time to retire the line.

Uniline® Features:

  • Low elongation
  • No break-in stretch
  • Low creep
  • 100% tensile translation: Uniline® splices develop 100% of the rope's strength
  • Non-rotating (anti-kinking, anti-hocking)
  • Allows inclusion of electrical conductors
  • Tough, resilient, compliant
  • Abrasion resistant
  • High dielectric strength and low conductivity

Uniline® is Designed for:

  • Oceanographic research
  • Offshore oil applications
  • Horizontal life line systems
  • Salvage, search and recovery
  • Utility pulling line applications
  • Undersea fiber optic communications systems
  • Tower guying
  • Marine dock and float guying


Uniline® Specifications


UNILINE® COLORS Uniline® can be coated with a variety of bright colors for easy identification.

BREAKING STRENGTHS are average for new ropes tested under laboratory conditions.

WORKING LOAD for non-critical applications may be figured at 25% of average break strength, assuming normal working conditions and the absence of shock loads and sharp bends. All critical applications (risk to life and property) require a lower working load. Consult Yale Rope Technologies.

WEIGHT in SEA WATER of polyester Uniline® is approximately 26% of dry weight.

TENSILE STRENGTHS are determined from tests on new, unused rope in accordance with standard test methods of the Cordage Institute and Uniline® splicing method.

CAUTION: USE OF WORKING LOADS

Because of the wide range of rope use, rope condition, exposure to the several factors affecting rope behavior, and the degree of risk to life and property involved, it is impossible to make blanket recommendations as to working loads. However, to provide guidelines, working loads are tabulated for rope in good condition with appropriate splices, in non-critical applications and under normal service conditions.

The Cordage Institute Formula for working load is:

Working Load = Minimum Breaking Strength/Safety Factor

A higher working load may be selected only with expert knowledge of conditions and professional estimate of risk, and if the rope has not been subjected to a dynamic loading or other excessive use, has been inspected and found to be in good condition, is to be used in the recommended manner, and the application does not involve elevated temperatures, extended periods under load, or obvious dynamic loading (see explanation below) such as sudden drops, snubs, or pickups. For all such applications, and for applications involving more severe exposure conditions, or for recommendations on special applications, consult Yale Rope Technologies Inc., 77 Industrial Park Road, Saco, ME 04072, 207-282-3396, info@yalecordage.com.

Many uses of rope involve serious risk of injury to personnel or damage to valuable property. This danger is often obvious, as when a heavy load is supported above a person(s). An equally dangerous situation occurs if personnel are in line with a rope under tension. Should the rope fail, it may recoil with considerable force. Persons should be warned against the serious danger of standing in line with any rope under tension. In all cases where such risks are present, or there is any question about the loads involved or the conditions of use, the working load should be substantially reduced and the rope properly inspected.

DYNAMIC LOADING VOIDS NORMAL WORKING LOADS

Normal working loads are not applicable when the rope is subject to significant dynamic loading. Whenever a load is picked up, stopped, moved or swung there is an increased force due to dynamic loading. The more rapidly or suddenly such actions occur, the greater the increase will be. In extreme cases, the force put on the rope may be two, three or even more times the normal involved.
Examples could be picking up a tow on a slack line or using a rope to stop a falling object. Therefore, in all such applications as towing lines, lifelines, safety lines, climbing ropes, etc., working load as given do not apply.

Users should be aware that dynamic effects are greater on a low-elongation rope such as polyester than on a high-elongation rope such as nylon, and greater on a shorter rope than on a longer one. The working load ratios listed contain provision for very modest dynamic loads. This means, however, that when this working load has been used to select a rope, the load must be handled slowly and smoothly to minimize dynamic effects and avoid exceeding the provision for them.

EFFECT OF TEMPERATURE ON TENSILE STRENGTH

The tensile strength charts apply to ropes tested at normal room temperature (70oF). Ropes have lower tensile strengths at higher temperatures. This may be 30% (or more) lower at the boiling point of water (212oF), continuing on down to zero strength for nylon and polyester at 490oF and 300oF for polypropylene. Also continued exposure at elevated temperatures causes permanent damage.

Tensile strengths shown are average based on new ropes tested under laboratory conditions; minimum can vary by 15%. Linear densities are average and may vary by 5%.

Length variation of +/-5% unless prearranged tolerances are established.

SPLICING Uniline® is completely spliceable and the splice develops the full strength of the rope. Click on the link below for detailed splicing instructions.

Uniline® Splicing Instructions

PRICING Please contact Yale Rope Technologies, Inc. for current price quotes.

  • Prices are for total length of one size and type ordered at one time.
  • Minimum run lengths prevail. Please inquire.
  • Weights may vary +/- 5%.
  • Available in unlimited lengths without splices.
  • Factory eye splices are available.
  • Standard color for Uniline® is black. Other colors (red, blue, green, orange) are available at an up-charge

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TERMS AND CONDITIONS OF SALE -- 30 DAYS NET

Freight is FOB Spencer, North Carolina, USA. Prices are per foot and shall be increased by any taxes that are applicable. Prices subject to change without notice. All orders are subject to acceptance by home office. We reserve the right to limit quantities on any orders which we may receive. All agreements, contracts and orders made or accepted by us are subject to automatic cancellation in the event of our inability to make delivery for any causes beyond our control (including, but not limited to, shortage of fibers and supplies, government regulations or control, war conditions, strikes, fire, breakage of machinery, etc.), in which event we shall bear no liability. Further, prices may, in event of these same conditions, be withdrawn without notice. No goods returned without written authorization.

SAMPLES AVAILABLE UPON REQUEST.

Uniline® is a registered trademark of Yale Rope Technologies, Inc.