Jute Rope

Never Experienced Jute Rope Before? Don't Sweat It!

jute rope for bondage and shibari

You’ll never feel disappointed in your bondage gear again, after you try jute rope for the first time.

While this natural fiber is fantastic, before clicking “buy” just yet, you need to know what separates the amazing, from the meh.

Jute is, without a doubt, the best material to work with. Unfortunately, it’s not the strongest one. Learning the factors that determine its strength and how to maintain its integrity, are the two most important things to know about your equipment.

Read this bad boy in its entirety, or jump-ahead to get the info you want:

The Secrets to Keeping Your Eyes Peeled

jute rope natural fibers

First up is filament quality. Study the rope, and asses the following factors:

  • Where the filaments are removed from the plant
  • How long they are
  • How fine they are
  • Their levels-of-impurity

Eyeballing Jute Rope Like a Champ

Coarse fibers reduce the rope’s cross-sectional integrity.

Long, fine fibers are more flexible, and thus more pliable. This makes them ideal because of their effectiveness when spun into yarn.

Note: Only the highest-grade jute fibers should be used to make rope, for the sake of safely supporting a person.

Later on, we’ll get elbows-deep into the grading process.

What Is Jute, Exactly?

jute rope natural fibers

Jute is a natural fiber made from plants.

Like we discussed earlier, anything in nature is bound to be imperfect. Of course, there are certain factors that increase the chances of a high-quality crop.

The most obvious are its extreme dependence on the weather during its growth and harvest seasons, in addition to other processes it undergoes, before spinning Ito yarn. Thus, it’s impossible to measure final strength, based on a single variable.

Perfect Conditions = Perfect Jute

There’s a reason the Farmer’s Almanac exists: Weather patterns change year-to-year.

And weather patterns, of course, affect how pants grow. Thus, what year jute grows plays a significant rile in determining its quality.

The bigger factors include:

  • Temperature
  • Sunlight
  • Rainfall
  • Humidity

The ideal temperature range is between 24 - 37 C (75.2 - 98.6 F), with extended periods at 34 C (93.2 F).

Owing to the geographical regions which suit jute’s prosperity, pre-monsoon rainfall affects quality. A bad season produces lower-quality fibers.

Regardless of the type-of-season, however, jute must be harvested at its peak. From there, only the best fibers are selected for processing.

Another property which plays a big rule, is the fact jute is fertility-exhausting plant. That means it requires fresh alluvial soil.

If jute’s planted in clay or sandy soils, it produces coarse and sticky fibers respectively. To alleviate these imperfections, fertilizer is required. Like any plant, however, these chemicals are soaked in, and ultimately end up in the final product.

The Low-Down on Jute Yarn

Unless twisted with other single-ply yarns, all-yarn is single-ply.

If a rope strand is 12 single-ply yarns counter-twisted together, a 6x2-ply or 4x3-ply are considered the same thing—just constructed differently.

Something to note: Uniformity and softness can be lost in multiple-ply yarn because of the opposing twist dynamics, which make it knurl. Tighter multiple-ply twist produces stress and castellation.

When natural fibers come into contact with water, the filaments swell. If tension is applied during the drying process, it returns approximately the same length. Next time it gets wet, it own’t shrink as much—but the filaments are compromised.

This process is known as hygroscopic behavior. And, there’s a direct link between this behavior, weakening of the fibers’ microstructure, and the reduction of the shrink-and-expansion-cycle over-time.

Naturally, variabilities exist, which can be explained by the batch, variety, and location within the plant, because of how fiber absorbs moisture.

What this means is finished rope should never be fully-sowed, as the shrink-and-expansion cycle compromises overall strength.

Wholesale jute yarn for homemade bondage rope for shibari

Wrapping Your Head Around Jute Grading

habijabi cluster jute rope

Grading comes down to determining a fiber’s level-of-impurities.

In more technical terms, it determines how impurities affect longitudinal strength of a rope, as well as the amount of hairiness. Keep in mind, many stages affect the hairiness of fibers.

This process occurs, by separating individual fibers through carding. From there, they’re drawn parallel and ready for spinning. Excessive carding breaks and shortens filaments, which increases hairiness. Fiber strength is influenced by this stage.

Lower-grades are prone to breakage, and likelier to tangle into Habijabi clusters.

Take the Plunge Into Yarn Grading

Because natural fibers are innately imperfect, there are many different jute yarn grades.

Some of the most common are:

  • CRM
  • CRT
  • CRX

These are all made for Van de Wiele looms, for carpet-backing applications. In laymen’s terms, they’re a lower-grade, thanks to their shortened filaments, and different twist dynamics ideal for weaving—not twisting into rope.

Dive Head-First Into Jute Rope Processing

Jute fibers are naturally soft, but they go through a second process, to soften them further.

They undergo rigging in slow-moving, clear water at an even temperature of 24 C (93.2F).

In fact, if the temperature fluctuates by just 2 C, bacteria may sneak its way in. If the water quality is compromised in any way, the fiber will pick up contaminants.

Once the retting process finishes up, the jute’s left to dry naturally. The loose jute fibers are then baled and transported to a mill, where they’re separated with manual hackling, for grading.

Additional hackling sorts decreasing grades down to sack-quality, until dust is the only thing left.


What Do You Need to Know About Making Jute Rope?

The jute fibers are still loose in this state between the grading and carding stages. During this time, additional cleaning occurs, including washing and drying—without stressing the fibers.

Afterwards, the batching medium is applied, to help the fibers stick together as they twist.

Jute rope intended for industrial use often incorporates Jute Batching Oil (JBO) because it’s so cheap. It’s not intended for humans, and is toxic.

It’s important to understand how critical the filament twist is to strength. The Goal is to reach a perfect balance between coherence and obliquity.

When a low-yarn twist is weaker—not necessarily because of fiber breakage—because of slippage, it leads to catastrophic tears.

On the flip side, high-yarn twists compromise linear orientation, which causes sheer.

For strong and soft rope, the optimum twist must not be compromised, at any point

The Final Steps

making jute rope string

The highest-grades of jute fiber has long-filaments straightened in carding, to make the fiber parallel to the axis of the sliver. After spinning and batching, a coating helps reduce hairiness even further.

Take a piece of your rope and inspect it meticulously. Look at the outside, then unwind the strands and yarns.

You may very well find complete breaks, dark bark and waste, specks, long ruddy cuttings, and Habijabi tangles. The presence of any of these, alongside short-fiber loss, seriously compromises strength.

Owning a set of jute rope requires a working knowledge-base, not just about use, but also on maintenance, and when to discard and purchase new ones.

Jute rope can be used raw, or may be conditioned.

The conditioning process calls for oil and wax. Neither should go rancid, or penetrate the rope too deeply, which reduces a greasy, heavy piece of equipment.

Think about plant fibers, like human hair:

If it’s dry and brittle, it’ll break easily and become damaged.

A little softening makes the rope more flexible, and haps maintain its core strength.

Fact: Jute is naturally hairy. It can be reduced, but never eliminated.


Why AmatsunawaUSA Is Light Years Ahead of the Pack

While every bondage rope producer has their special processes, at AmatsunawaUSA we take it a million-times further.

Not only do we work with a top-quality grown and mill, we also use a national jute laboratory, environmental laboratory, and natural fiber specialist specifically for rope makers.

Their expertise propels us in the right direction, so we constantly refine specifications, in every step of our process.

And, every single fiber, yarn, and jute rope that comes off our production line is guaranteed safe for prolonged skin contact, and any and all activities, including erotic sadomasochistic bondage.

Order your wholesale spool now! For individual ropes, please see our fantastic short rope resellers!