JPH1096150A - Braid rope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lightweight braid rope capable of keeping eye formed in braid rope terminal by using multifilament yarn against load, having high tensile strength and readily handleable. SOLUTION: This braid rope comprises a single rope 10 loosely braided in hollow by using >=6 small ropes having >=250 denier fineness and comprising loop processed yarn having >=500 denier total denier and >=8gf/d breakage strength, in the state in which multifilament yarn having >=15gf/d breakage strength of single yarn and multifilament yarn having >=20gf/d breakage strength are entangled. The braid rope has a part 12 hardened at the top of rope and the rope top hardened in the hollow part is inserted into a mesh near the top and the rope top hardened in double structure state is internally inserted along the hollow part having a definite length and the top is pulled out from braid rope mesh to the outside of rope and eye 14 is formed at the rope end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braided rope capable of repeatedly and easily forming and releasing an eye at the end of the rope.

[0002]

2. Description of the Related Art A conventional braided rope capable of easily and quickly repeating the creation and release of the eye at the end of the rope is disclosed in Japanese Utility Model Publication No. 61-11272, which is itself used as a rope. The completed 6 to 16 small ropes are braided together with a lead having a diameter of 6 to 9 times the main body diameter to form a single rope, and a predetermined length of the tip portion of the rope is hardened to form an end portion. The end of the rope is shortened and deformed in the longitudinal direction, expanded in the meridional direction and expanded into a cage shape, and the hardened rope tip portion is inserted into the cage-shaped opening portion, and the length is fixed. After inserting the rope whose tip is hardened in a double structure along the basket-shaped part and proceeding,
The tip is pulled out from the braided rope stitch to the outside of the rope to form an eye at the end of the rope. When an external force acts on the main body and tension is generated in the rope, a warp-shaped cage-like tension is produced in the warp direction, and the frictional force causes an internal tension. There is disclosed a braided rope in which the insertion portion can suppress slippage from the outer layer portion.

[0003] In a conventionally known rope, the gripping force between the rope insertion portion and the outer layer portion is such that when tension is generated by the load of the rope body, the insertion portion and the outer layer are generated by a cage-like tension in a radially inward direction. Since the mechanism is governed by the magnitude of the frictional force between the parts, if the frictional force is sufficiently large, slippage from the outer layer part of the insertion part is sufficiently suppressed and a stable eye part of any size can be formed, achieving the purpose However, if the frictional force is low, the gripping force is small and the purpose cannot be achieved. Furthermore, when the small rope constituting fiber constituting the rope is a spun yarn, the frictional force between the fibers determines an important function that governs not only the gripping force due to the frictional force between the interpolated portion and the outer layer portion but also the tensile strength of the rope itself. It was also a factor.

In such a conventional product, when a spun yarn is used, the tensile strength of the spun yarn itself is low, and the tensile strength of the braided rope is
Only a 3-ton type rope can be put into practical use with a rope thickness that can be practically used, and among the practical products, those having high tensile strength are thick, heavy, bulky, and difficult to handle.

[0005] Therefore, in order to obtain a lightweight and moderately sized rope while increasing the tensile strength of the constituent fibers, application of a multifilament yarn has been attempted, and particularly, a polyamide filament yarn for industrial materials and a polyester filament yarn having a high tensile strength have been tried. Attempts have also been made to apply filament yarns of aramid fiber or ultra-high molecular weight polyethylene, but when these filament yarns are used, the frictional force is generally lower in morphology compared to spun yarn. Yes, the weight and bulkiness of the braided rope are improved, but the eye formed at the end of the braided rope slips off and cannot be maintained against the load. In order to improve the frictional force between the constituent fibers, an attempt was made to select a more advantageous cross-sectional shape. For example, a flat filament yarn or a modified cross-section yarn was also applied, but sufficient improvement results were still obtained. However, in order to increase the gripping force between the insertion part and the outer layer part and increase the tensile strength of the rope itself to approach the purpose, it is necessary to increase the amount of fiber used and make it a heavy and thick rope. It was difficult to handle and improvement was strongly desired.

[0006] Further, the application of the loop-processed yarn involves the use of a synthetic fiber filament yarn a and a synthetic fiber filament yarn b in order to enhance the adhesive force between the resin coated with the synthetic resin coating sheet and the base fabric developed separately. It is also known in Japanese Utility Model Publication No. 2-41187 to use a base fabric woven with loop-processed yarns, which is formed by performing entanglement bulkiness treatment by the action of a high-pressure airflow using a disturbing nozzle. In the created loop processing yarn,
In addition to insufficient strength of the fibers constituting the loop, the tensile strength of the rope was also insufficient, and a light and bulky rope could not be obtained.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide an eye formed on a braided rope end using a multifilament yarn, which has a high tensile strength capable of being maintained against a load, is lightweight, bulky, and easy to handle. To provide a braided rope.

[0008]

SUMMARY OF THE INVENTION The present invention is intended to maintain a stable eye shape under a heavy load, to have a high tensile strength, to be light and easy to handle without being too thick. (Requirement 1) Six or more small ropes are used to form a single rope by braiding each other, and a predetermined portion of the tip of the rope is used. The length of the rope is hardened, and the vicinity of the rope tip is compressed and shortened in the longitudinal direction and expanded in the radial direction to form a cage-shaped hollow portion. After inserting the rope with the hardened tip into a double structure along this cage tube-shaped portion for a certain length and proceeding, pull the tip out of the braided rope stitch to the outside of the rope. A braided rope with eyes formed on it.

In order to improve the gripping friction force between the interpolated portion and the outer layer portion of the eye, to stabilize the eye shape under a heavy load and to improve the tensile strength of the braided rope itself, (Requirement 2) The braided rope according to Requirement 1 Is converted into a multifilament yarn a having a fineness of 250 denier or more and a single yarn breaking strength of 15 gf / d or more, a single yarn denyl of 4 denier or more, and a single yarn breaking strength of 5 gf / d or more. A multi-filament yarn b having a breaking strength of 20 gf or more is entangled with a loop processed yarn having a breaking strength of 8 gf / d or more with a total denier of 500 to 5000 deniers. is there.

[0010] That is, the present invention solves the long-standing problem that a conventional high-load braided rope which cannot be easily handled in terms of thickness and weight can be obtained by adding a synthetic fiber filament yarn a to a small rope constituting the braided rope. The problem was solved by using a loop-processed yarn formed by entanglement and bulking of the synthetic fiber filament yarn b by the action of a high-pressure airflow using a disturbing nozzle.

In such a loop-processed yarn, a filament bundle which is relatively straight in the longitudinal direction of the yarn and a curved and entangled loop of the filament protruding on the yarn surface exist, and the former bears the tension, and the latter bears the tension. It contributes to the improvement of the surface friction force, can obtain a high tensile strength, can guarantee a high surface friction force in spite of being a filament yarn, can provide an eye-breaking stress, and is most suitable for a high-load braided rope.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The conditions for producing a loop-processed yarn satisfying the above constitutional requirements are as follows. That is, the small rope constituting the braided rope is composed of a multifilament yarn a having a total denier of 250 denier or more composed of filament yarns having a single yarn breaking strength of 15 gf / d or more, a single yarn denyl of 4 denier or more, and a single yarn breaking strength of 5 gf / d. and a multifilament yarn b composed of at least d filament yarns, and a composition weight ratio of both multifilament yarns (hereinafter, referred to as a “loop yarn ratio”): b / (a + b) is 0.2 to 0.7; The overfeed rate Fa of the filament yarn a is 2 to 10
%, Multifilament yarn b overfeed rate Fb
10 to 60%, and further supply and process to a loop processing yarn processing apparatus which performs entanglement bulkiness processing by the action of a high pressure air flow using a turbulent nozzle so that Fb-Fa becomes 3 to 40, and is configured by total denier. It is composed of a looped yarn having a breaking strength of 500 to 5000 deniers of 8.0 gf / d or more.

The preferred components and manufacturing conditions of the loop-processed yarn are described in more detail below. (1) The multifilament yarn a is a single yarn tensile strength of the filament which is a tensile strength imparting element of the braided rope. Is naturally higher, but if the required physical properties are set in consideration of economic factors as well, at least 15 gf / d or more is required to maintain the desired tensile strength after the loop imparting process, and preferably 25 gf / d. / D or more is desirable. Further, in order to provide a desired tensile strength, the total denier as the multifilament yarn a is required to be 250 denier or more from the viewpoint of economy, preferably 500 denier or more. 50 from the surface
00 denier or less is desirable. Multifilament yarn a
The constituent material of the high-molecular-weight polyethylene, para-based polyaramid, any material polymer that can obtain high strength such as polyarylate, may be any, such as finishing agents such as oils,
There is no particular limitation as long as it is suitable for loop processing.

(2) The multifilament yarn b is formed by giving a loop to the braided rope constituting yarn, and forming a hardened rope tip for eye construction by compressing and deforming the vicinity of the rope tip in the longitudinal direction and expanding in the warp direction. It is a component that plays a role of increasing the frictional force generated between the insertion part and the outer layer part in the double-structure part formed along the cage part by inserting it into the hollow part of the cage shape and proceeding. The material must have properties that are effective in increasing the frictional force, have a high coefficient of friction, and have excellent wear resistance, and have a single yarn tensile strength that can withstand the tension generated by the friction between the inner and outer layers and the shearing force. It is necessary to have an appropriate cross-sectional shape for improving the frictional force. Especially,
The loop forming filament for generating frictional force is pulled and cut by the frictional force and disappears,
Since the disappearance of the loop leads to a decrease in the frictional force, a single yarn tensile strength of 20 gf or more, preferably 30 gf or more is required. Also, from the number of expressed loops, the larger the number of filaments, the more effective. From the interrelation among the tensile strength and the number of filaments, the loop-forming filament has a single yarn tensile strength of 5 gf / d or more, and the single yarn denier has a density of 4 to 15 deniers in view of the possibility of providing the loop and the processing efficiency. Is preferably 5 to 10 denier. As the filament constituent material, high molecular weight polyethylene, para-polyaramid, etc. can be used in order to obtain high tensile strength, as in the case of the multifilament yarn a, but in consideration of economy, good abrasion resistance and high strength are obtained. Since it is easy and the strength does not need to be as high as that of the multifilament yarn a, general-purpose polymers such as polyester and polyamide may be selected and filaments for industrial materials may be used.

(3) The loop yarn ratio of the multifilament yarn b / the multifilament yarn a in the loop yarn is related to the amount of loop generated in the loop yarn and is very important. If the loop yarn ratio b / (a + b) between the multifilament yarn b and the multifilament yarn a is too small, the required number of generated loops is so small that the required frictional force cannot be obtained, and the loop yarn ratio: b / (a + b). ) Is too large, the tensile strength-sharing component decreases and the required tensile strength cannot be obtained, the operability of the loop development processing decreases, and the handleability of the loop processed yarn deteriorates. Therefore, the loop yarn ratio: b / (a)
+ B) = 0.2 to 0.7 is preferable, and more preferably 0.3 to 0.6.

(4) The manufacturing conditions for producing a loop-processed yarn will be described in detail. The multi-filament yarn 3 and the multi-filament yarn 4 are disturbed by feed rollers 5 and 6 using a loop generator 7 as shown in FIG. The liquid is supplied to the loop generator 7 by the action of a high-pressure airflow using a nozzle (for example, a Taslan processing nozzle manufactured by DuPont), and the entangled bulk is increased by the turbulence of the high-pressure airflow in the direction of the arrow and water from a water supply device (not shown). The looped yarn Y is drawn out through the roll 8 and the delivery roll 9, and the overfeed condition of both multifilament yarns is a very important determinant for the appearance of the loop. Fa, the over-feed rate Fb of the multifilament yarn b and the loop expression state by the Fb-Fa It is arranged.

That is, when the overfeed ratio Fa of the multifilament yarn a is less than 1%, the entanglement between the multifilament yarn b and the multifilament yarn a becomes worse and the multifilament yarn a becomes partially separated.
If a exceeds 20%, the strength of the multifilament yarn a is greatly reduced and the physical properties of the multi-filament yarn a having a high tensile strength at an angle are impaired. Therefore, the overfeed ratio Fa is preferably 2 to 15%. On the other hand, if the overfeed ratio Fb of the multifilament yarn b is less than 10%, it becomes difficult to form coils, entanglements and loops, and if it exceeds 60%, the appearance of coils, entanglements and loops becomes so severe that the operability deteriorates and the appearance decreases. The overfeed rate Fb is 10% or more, preferably 30 to 60%, because the quality becomes too bad.
Is preferred. When Fb-Fa is less than 3, the balance between the overfeed ratios is lost and it is difficult to entangle, and it becomes difficult to form a loop-processed yarn having a loop formed on the surface of the two-layer structure. When Fb-Fa exceeds 40, the bulkiness is increased. Is obtained, but confounding deteriorates, and Fb-Fa is preferably 3 to 40.

(5) The loop-processed yarn thus configured is
Total denier 500 to 5 to satisfy workability and required physical properties
000 denier, more preferably 700-3000 denier, (average) tensile strength 8 g /
d, preferably 9.0 g / d or more, and the above-mentioned respective manufacturing conditions are selected, and comprehensive design conditions are set and created.

As other manufacturing conditions, coloring of the multifilament yarn b may be performed by any method, either by dyeing or a spun spinning method, and the tip of the braided rope may be cured by bonding with an adhesive or heat. Or a method of coating a heat-shrinkable tube and performing tightening and hardening by heat shrinkage. The number of the small ropes constituting the braided rope is required to be 6 or more so that the stitches of the braided rope are not disturbed and the tensile strength is not reduced even when the eye is quickly formed and unwound. The lead of the braided rope is 3 mm
On the other hand, the braided rope facilitates the formation of a basket-shaped hollow portion by compressing and shortening the rope in the longitudinal direction, and the hardened rope tip is inserted into the basket-shaped hollow portion. Since it is necessary to provide a function of easily forming an eye at the end of the rope by being inserted in a double structure along the basket, a lead of 5 to 9 times is appropriate.

The main use of the braided rope of the present invention is to form an eye at both ends, connect it to a heavy object and a traction device, and use it to move up and down or forward and backward and left and right. It can also be used for connection between wires, connecting wires and leading ropes, etc.When moving bar-shaped heavy objects, without forming eyes, the bar-shaped heavy objects can be directly inserted into the basket-shaped hollow part of the braided rope. By inserting the fixed length and fixing the tip of the rope, it is possible to generate a gripping frictional force and perform towing movement. In the case of such use, it is needless to say that the braided rope is kept cut without forming a hardened portion at the tip thereof, and the cut end is subjected to an adhesion or fusion treatment for preventing fraying. Such a form of the braided rope is also included in the scope of the present invention.

[0021]

EXAMPLES Hereinafter, the contents of the present invention will be described more specifically with reference to examples. It should be noted that the present invention is not limited by these embodiments, but is determined by the invention described in the claims.

[Embodiments 1 to 5] Each configuration shown in Table 1
Using the multifilament yarns a and b having the functions, under the respective processing conditions shown in Table 1, water was supplied to the multifilament yarn, and the multifilament yarn was passed through a Taslan processing nozzle manufactured by DuPont, at an air pressure of 6 kgf / cm ^{2 at a} processing speed of 100 m / min. By processing at each overfeed rate shown in Table 1, a loop-processed yarn composed of multifilament yarns 1 and 2 as shown in FIGS. 1 and 2 was prepared. Then, a multifilament yarn obtained by twisting the loop processed yarn with a twist number of 60 T / m as a primary twist,
Twisted yarn A is prepared by twisting with a twist of half the number of twists in the opposite direction to the double twisting (twisting twist number: 30 T / m), and then twisting six twisted yarns A having different twisting directions alternately. The lead of the braided rope is 4.0 times the outer diameter.
11), and a braided rope 10 composed of a total of 12 small ropes obtained by aligning two of these small ropes and having 5.0 times the outer diameter of the rope was prepared.

An epoxy resin was applied to the 20 cm of the end of the braided rope and cured to form a cured portion 12 at the end of the rope. In addition, the fineness, tensile strength (tensile strength), tensile strength,
Table 1 shows the ratio of the loop yarn occupied by the loop in the processed yarn, the appearance of the loop, and the evaluation of the durability of the loop.

Next, as shown in FIG. 5, a hardened portion 12 at the tip of a loosely braided rope is inserted into the hollow portion, and the rope is hardened into a double structure along a predetermined length along the hollow portion. After interpolating the tip 12, the tip 12 is pulled out of the braided rope stitch outside the rope to form a braided rope having an eye 14 formed at the end of the rope.

The number of ply-twisted yarns of the loop-processed yarn required to produce the twisted yarn A, the fineness of the twisted yarn A, the weight per unit length of the braided rope, the diameter, and the tensile force at which the eye or the rope breaks at the time of forming the eye. Tensile strength, [tensile strength / weight per unit length] = weight-specific strength, [tensile strength / cross-sectional area determined from diameter of braided rope] = bulk-specific strength, and when a load is applied to the braided rope under the formation of the eye Table 1 also shows the degree of slip resistance. A rope having a greater weight-specific strength and a higher bulk-specific strength indicates that the rope is light and strong and easy to handle without bulking.

Examples 1 to 5 all satisfy the requirements of the present invention, have high tensile strength, are light and not bulky, and have a tensile strength, a weight-specific strength, of the eye or rope at the time of eye formation. It is a braided rope that has good bulkiness and good handleability, and has no problem with the loop shape stability (lifetime).

Example 4 is an example using a polyester multifilament yarn in which the multifilament yarn b is soaked in green, and is a braided rope having a coloring effect.

The braided ropes of Examples 1 to 5 have a weight strength of at least 18.8 kgf / (g / m) and a bulk strength of 6.5 kgf / mm ² .

Comparative Examples 1 to 9 Table 1 shows Comparative Examples 1 to 9 which do not satisfy the requirements of the present invention in order to clarify the effects of the present invention. Comparative Examples 1 and 2 are examples in which no loop-processed yarn is used, and Comparative Example 1 is an example in which a flat cross-sectional shape polypropylene monofilament yarn is used. The strength of the constituent fibers themselves is also insufficient, and the strength of the braided rope is low. 3.0ton, weight ratio strength is 10.8Kgf /
(G / m), the bulk specific strength was only 2.88 kgf / mm ² , which was far from the target.

Comparative Example 2 is an example in which a high-strength polyethylene multifilament yarn was used. Although the rope itself did not have a large tensile strength, there was no loop, so the frictional force at the eye forming portion was insufficient and slippage occurred. The tensile strength, weight specific strength and bulk specific strength of the eye or rope during eye formation were low, and sufficient performance could not be obtained.

Comparative Example 3 is an example using a nylon 66 multifilament yarn a having a breaking strength of 13 gf / d and a nylon 6 multifilament yarn b.
Since the breaking strength of the multifilament yarn a was low, the breaking strength of the obtained loop processed yarn was as low as 6 gf / d, and a braided rope having the desired performance could not be obtained.

Comparative Example 4 is an example in which a 200d polyester multifilament yarn was used for the multifilament yarn b.
The ratio of the loop-forming component in the loop-processed yarn was low, the amount of the loop generated was low, the frictional force at the eye forming portion was insufficient, the slip was large, and the braided rope could not have a sufficient eye shape holding ability.

Comparative Example 5 is an example in which a 200d high-strength polyethylene multifilament yarn was used for multifilament yarn a, and the same 200d polyester multifilament yarn as in Comparative Example 4 was used for multifilament yarn b. Since the fineness of the filament yarns a and b was low, the resulting looped yarn fineness was as low as 440d, and the number of twisted yarns for obtaining the twisted yarn A was as large as 52, resulting in poor work efficiency and not suitable for practical use.

In Comparative Example 6, 1 was added to the multifilament yarn a.
Using a 200d high-strength polyethylene multifilament yarn, a 1000d polyester multifilament yarn as the multifilament yarn b, and an overfeed rate Fa of the multifilament yarn a at the time of forming a loop processed yarn =
This is an example in which 0 is set. In this prototype, the multi-filament yarn a and the multi-filament yarn b are poorly entangled due to a low overfeed ratio, and unwinding of the loop-processed yarn from the cheese wound with the loop-processed yarn in the manufacturing process for obtaining the twisted yarn A Poor performance, hooking on guides and fiber cutting occurred, resulting in a problem of poor operation, which was not put to practical use.

Comparative Example 7 is an example in which a polyester filament yarn for clothing of 150 d / 48 f having a low single yarn strength of 16.3 gf and a total of 900 denier was used as the multifilament yarn b. Only braided ropes with a problem of low loop durability due to low strength were obtained.

In Comparative Example 8, 1 was added to the multifilament yarn b.
This is an example in which two industrial polyester filament yarns of 260d / 108gf are combined and used as 2520d / 216gf. The fineness of the multifilament yarn b is large, and the loop yarn ratio: b / (a + b) = 0.72.
Since the ratio of the strong load component was small, the breaking strength of the obtained loop processed yarn was as low as 7.2 gf / d, and a braided rope having the desired strength could not be obtained.

In Comparative Example 9, as in Comparative Example 6, a 1200 d high-strength polyethylene multifilament yarn was used as the multifilament yarn a, and the overfeed ratio Fa of the multifilament yarn a at the time of forming the loop-processed yarn was Fa = 25%. Here is an example, but the overfeed rate is too high,
The breaking strength of the obtained processed yarn is as small as 7.0 gf / d,
A braided rope having the desired strength could not be obtained.

The performance of the samples of the examples and comparative examples in the present invention was evaluated according to the following method. (1) Fineness (d. Denier): JIS L1013
(2) Breaking strength of filament yarn: Breaking strength of filament yarn: JIS L10137.
According to the method of 5.1, using a constant-speed tension type tensile tester,
The measurement is performed at a gripping interval of 30 cm and a pulling speed of 30 cm / min. (3) Loop yarns Ratio: When measuring the weight of the loop yarn of 30cm length is W _0, and Wb by measuring the weight of the loop-forming component filament yarn b of the loop yarn in the loop yarns Ratio = (Wb / W ₀ ) × 100 (4) Abrasion resistance of loop yarn: JIS D4604 7.3
(1.5) According to the abrasion resistance test of (a), the sample was attached to a test device shown in FIG.
A load of d is applied, friction is applied in accordance with the method described in the JIS, and the damage state of the loop is observed. By visual judgment, it is judged that there is almost no damage;

(5) Weight of the braided rope: 1 m of the braided rope applied with an initial load of 3 g per weight (g / m) of the braided rope
Cut out the length and use the weight as the weight of the braided rope. (6) Diameter of the braided rope: The diameter of the braided rope to which an initial load of 3 g is applied per weight (g / m) of the braided rope is measured with a vernier caliper to obtain the diameter of the braided rope. (7) Tensile strength of the braided rope: Eyes with a circumference of 40 cm and a length of 25 cm inserted into the rope are created at both ends of the braided rope, the eyes are hung on hooks, and a tensile load is applied by a tensile tester, and the eyes or Measure the tensile load when the rope breaks and use it as the tensile strength of the braided rope. (8) Braided rope lead: The length of the small loop from which one small rope shown in FIG. 4 reaches the same shortest position on the circumference of the braided rope. The load when measuring the length is 3 g per weight (g / m) of the small rope.

[0040]

According to the present invention, it is possible to repeatedly and easily create and release the eye at the end of the rope easily and quickly without forming knots or bumps with the rope itself without the help of other tools. It is possible, and the tensile breaking strength of the eye is large,
It is possible to manufacture a light-weight, non-bulky, easy-to-handle braided rope for high load, which has high tensile strength of the rope, high shape stability of the eye even under heavy load.

[Brief description of the drawings]

FIG. 1 is a schematic view of a loop processed yarn.

FIG. 2 is a schematic cross-sectional view of a loop processing yarn.

FIG. 3 is a schematic view of a disturbance type bulky loop processed yarn production apparatus using a disturbance nozzle.

FIG. 4 is a schematic view of a braided rope.

FIG. 5 is an eye formation diagram of a braided rope.

[Explanation of symbols]

1: Filament yarn 2: Filament yarn 3: Multifilament yarn a 4: Multifilament yarn b 5, 6: Feed roller 7: High-pressure air-turbulence type bulky loop processed yarn manufacturing device using a disturbance nozzle 8: Guide roll 9: Deli Belly roll 10: Rope main body 11: Small rope 12: Rope terminal hardened part 13: Basket hollow part 14: Eye 15: Pitch L: Lead Y: Loop processing thread

[Table 1]

[Table 1]

Claims (3)

[Claims] 1. A multifilament yarn a having a fineness of 250 denier or more and a breaking strength of a single yarn of 15 gf / d or more.
And a multifilament yarn b having a breaking strength of 20 gf or more entangled, using 6 or more small ropes made of loop-processed yarn having a total denier of 500 denier or more and a breaking strength of 8 gf / d or more, loosely and hollowly formed. It consists of a single braided rope, has a hardened part at the tip of the rope, inserts the hardened rope tip into the stitch near the tip, and extends along the hollow part for a fixed length. A braided rope in which, after interpolating the tip of the rope hardened into a heavy structure, the tip is drawn out of the rope from the braided rope stitch to form an eye at the end of the rope. When tension is applied, the outer layer portion of the double structure portion formed on the braided rope is tightened and contracted inward of the diameter of the rope, whereby the rope inserted into the double structure portion is gripped, That Braided rope with a slippage suppression function of the inner insertion portion by friction force. 2. The small rope constituting the braided rope is a multifilament yarn a having a total denier of 250 denier or more composed of filament yarns having a single yarn breaking strength of 15 gf / d or more, a single yarn denyl of 4 denier or more, and a single yarn. Breaking strength 5
a multifilament yarn b composed of a filament yarn of gf / d or more, a composition weight ratio b / (a + b) of both multifilament yarns of 0.2 to 0.7, and an overfeed rate Fa of the multifilament yarn a. Is 2 to 10%, and the overfeed rate Fb of the multifilament yarn b is 10 to 10%.
Loop-processed yarn having a total denier of 500 to 5000 denier and a breaking strength of 8.0 gf / d or more, which is formed by entanglement bulk treatment by the action of a high-pressure airflow using a disturbing nozzle so that Fb-Fa becomes 3 to 40 at 60%. The braided rope according to claim 1, which is constituted by: 3. The braided rope according to claim 1, wherein the multifilament yarn b is colored.