CN215164111U - Hollow polyester fiber floating mooring rope - Google Patents
Hollow polyester fiber floating mooring rope Download PDFInfo
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- CN215164111U CN215164111U CN202023235536.1U CN202023235536U CN215164111U CN 215164111 U CN215164111 U CN 215164111U CN 202023235536 U CN202023235536 U CN 202023235536U CN 215164111 U CN215164111 U CN 215164111U
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Abstract
The hollow polyester fiber floating mooring rope is a fiber rope made of hollow polyester fibers, a plurality of through cavities are formed in the hollow polyester fibers and distributed along the axial direction of the hollow polyester fibers, the through cavities are identical in shape and symmetrically distributed by taking the center of the hollow polyester fibers as a symmetry axis, the hollow rate of the hollow polyester fibers is 25-40%, and the density of the hollow polyester fibers is 0.95-1.00g/cm3。
Description
Technical Field
The application belongs to the technical field of fiber ropes, and particularly relates to a hollow polyester fiber floating mooring rope.
Background
The large ship stably and safely stops at a wharf without leaving the mooring rope, the ropes made of polypropylene, polyester and polyamide fibers are mainly used as the mooring ropes at present, but in the actual use process, the mooring ropes have a plurality of problems, for example, although the polypropylene ropes have a smaller specific gravity than water and can float on the water surface, the polypropylene fibers are not resistant to ultraviolet rays, and are easy to age under the irradiation of sunlight and poor in durability; polyester and polyamide ropes have high specific gravity, are not easy to find when being immersed in water in use, are easy to cause accidents caused by the fact that the ropes wind propellers, and can cause mildew and attachment of organisms on the surfaces of the ropes along with the increase of the using time, thereby influencing further use. These problems have been long-pending technical problems in the field, and with the development of the ship industry, new requirements are gradually made on the mechanical properties such as safety, wear resistance, breaking strength, antibacterial and antifouling effects and the antibacterial and antifouling functions of mooring ropes, especially higher requirements on buoyancy are made.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present application discloses a hollow polyester fiber floating waterThe mooring rope is characterized in that the floating mooring rope is a fiber rope made of hollow polyester fibers, a plurality of through cavities are formed in the hollow polyester fibers and distributed along the axial direction of the hollow polyester fibers, the through cavities are identical in shape and symmetrically distributed by taking the center of the hollow polyester fibers as a symmetry axis, the hollow rate of the hollow polyester fibers is 25-40%, and the density of the hollow polyester fibers is 0.95-1.00g/cm3；
The hollow polyester fiber is prepared from a polyester modified composite material, and the polyester modified composite material comprises the following raw materials: the antibacterial agent comprises polyester chips, an ethylene-vinyl acetate copolymer, an antioxidant 1010, an auxiliary antioxidant DLTP and a nano silver-loaded cuprous oxide antibacterial agent, wherein the mass of the ethylene-vinyl acetate copolymer is 1.2-3.5 per mill of the mass of the polyester chips, the mass of the antioxidant 1010 is 0.1-2.5 per mill of the mass of the polyester chips, the mass of the auxiliary antioxidant DLTP is 0.5-1.2 per mill of the mass of the polyester chips, and the mass of the nano silver-loaded cuprous oxide antibacterial agent is 0.1-2.0 per mill of the mass of the polyester chips.
Some embodiments disclose hollow polyester fiber floating mooring lines, wherein the number of the through cavities is 3 or 4.
Some embodiments disclose a hollow polyester fiber floating mooring line, wherein the shape of the through cavity is circular or oval.
Some embodiments disclose the hollow polyester fiber floating mooring rope, wherein the nano silver-loaded cuprous oxide antibacterial agent has a particle size of 20-50 nm.
Some embodiments disclose the hollow polyester fiber floating mooring rope, wherein the hollow polyester fiber floating mooring rope is a twisted rope or a braided rope.
The hollow polyester fiber floating mooring rope disclosed by the embodiment of the application has the advantages that the specific amount of antioxidants, nano silver-loaded cuprous oxide antibacterial agents and other auxiliaries are added into the master batch in the hollow polyester fiber, the raw material composition of the fiber yarns, the flowability and spinnability of spinning are optimized, the smooth and smooth spinning production is ensured, the obtained hollow polyester fiber filament has no broken yarn phenomenon, compared with the existing polypropylene rope, the wear-resisting revolution of the obtained hollow polyester fiber floating mooring rope is improved by more than 10%, the breaking strength is improved by more than 5%, the adhesion area of fouling organisms on the surface of the mooring rope is reduced by more than 6%, and the hollow polyester fiber floating mooring rope has the technical effects of excellent wear resistance, higher breaking strength and better antibacterial and antifouling effects, and has excellent ultraviolet resistance, improved safety performance, low production cost and good application prospect in the technical field of mooring ropes.
Drawings
FIG. 1 schematic view of the structure of a hollow polyester fiber in example 1
Reference numerals
1 hollow polyester fiber 10 through cavity
11 center
Detailed Description
The word "embodiment" as used herein, is not necessarily to be construed as preferred or advantageous over other embodiments, including any embodiment illustrated as "exemplary". Performance index tests in the examples of this application, unless otherwise indicated, were performed using routine experimentation in the art. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; other test methods and techniques not specifically mentioned in the present application are those commonly employed by those of ordinary skill in the art.
The terms "substantially" and "about" are used herein to describe small fluctuations. For example, they may mean less than or equal to ± 5%, such as less than or equal to ± 2%, such as less than or equal to ± 1%, such as less than or equal to ± 0.5%, such as less than or equal to ± 0.2%, such as less than or equal to ± 0.1%, such as less than or equal to ± 0.05%. Numerical data represented or presented herein in a range format is used merely for convenience and brevity and thus should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a numerical range of "1 to 5%" should be interpreted to include not only the explicitly recited values of 1% to 5%, but also include individual values and sub-ranges within the indicated range. Thus, included in this numerical range are individual values, such as 2%, 3.5%, and 4%, and sub-ranges, such as 1% to 3%, 2% to 4%, and 3% to 5%, etc. This principle applies equally to ranges reciting only one numerical value. Moreover, such an interpretation applies regardless of the breadth of the range or the characteristics being described. Herein, the antioxidant 1010 is pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]; the polyester is polyethylene terephthalate; the auxiliary antioxidant DLTP is thioester auxiliary antioxidant.
In this document, including the claims, all conjunctions such as "comprising," including, "" carrying, "" having, "" containing, "" involving, "" containing, "and the like are to be understood as being open-ended, i.e., to mean" including but not limited to. Only the conjunctions "consisting of … …" and "consisting of … …" are closed conjunctions.
In the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In the examples, some methods, means, instruments, apparatuses, etc. known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.
On the premise of no conflict, the technical features disclosed in the embodiments of the present application may be combined arbitrarily, and the obtained technical solution belongs to the content disclosed in the embodiments of the present application.
In some embodiments, the hollow polyester fiber floating mooring rope is a fiber rope made of hollow polyester fibers, the hollow polyester fibers are internally provided with a plurality of through cavities distributed along the axial direction of the hollow polyester fibers, the through cavities are identical in shape and symmetrically distributed by taking the center of the hollow polyester fibers as a symmetry axis, the hollow ratio of the hollow polyester fibers is 25-40%, and the density is 0.95-1.00g/cm3(ii) a The hollow polyester fiber is prepared from a polyester modified composite material, wherein the polyester modified composite material comprises the following raw materials: polyester chip, ethylene-vinyl acetate copolymer, antioxidant 1010, auxiliary antioxidant DLTP and nano silver-loaded cuprous oxide antibacterial agent, wherein the ethylene-ethyl acetateThe mass of the alkenyl ester copolymer is 1.2-3.5 per mill of the mass of the polyester chip, the mass of the antioxidant 1010 is 0.1-2.5 per mill of the mass of the polyester chip, the mass of the antioxidant DLTP is 0.5-1.2 per mill of the mass of the polyester chip, and the mass of the nano silver-loaded cuprous oxide antibacterial agent is 0.1-2.0 per mill of the mass of the polyester chip.
Generally, the antioxidant 1010 and the auxiliary antioxidant DLTP are cooperatively used, so that the hollow polyester fiber product is not degraded in the processing process, the oxidation resistance of the hollow polyester fiber is improved, and the service cycle is prolonged; the nano silver-loaded cuprous oxide antibacterial agent can enhance the strength of the hollow polyester fiber, has a certain antibacterial and anticorrosive function, and reduces the attachment of fouling organisms on the floating mooring rope in the using process; the ethylene-vinyl acetate copolymer improves the processing fluidity of spinning, and obviously improves the comprehensive performance of the hollow polyester fiber.
The hollow rate of the hollow polyester fiber generally refers to the percentage of the hollow cavity volume thereof to the hollow polyester fiber volume, and can also be referred to as hollowness; when the hollow rate is less than 25%, the manufactured fiber rope can not be ensured to float on the water surface to be used as a floating mooring rope, and when the hollow rate is higher than 40%, the strength of the hollow polyester fiber is greatly influenced, so that the use safety of the hollow polyester fiber is influenced.
As an alternative embodiment, in the hollow polyester fiber floating mooring line, the number of the through cavities in the hollow polyester fiber is set to be 3 or 4. Usually, a plurality of through cavities are arranged, so that the volume of the cavities in the polyester fiber can be effectively increased, the density of the cavities is reduced, and the floating capacity of the polyester fiber is improved; the plurality of through cavities are uniformly distributed in the polyester fiber, so that the strength of the polyester fiber can be effectively prevented from being reduced, and the use safety of the polyester fiber is improved, for example, 3 cavities and 4 cavities are uniformly distributed in the fiber in a central symmetry mode. When the number of the through cavities is too small, for example, only one through cavity is provided, the hollow polyester fiber is easy to crush in the using process, the safety is poor, the reduction of the fiber density is not facilitated, when the number of the through cavities is too large, the cavity rate is high, the fiber strength is reduced, the manufacturing difficulty of the spinning die head is increased, and the manufacturing cost is increased.
As an alternative embodiment, in the hollow polyester fiber floating mooring line, the shape of the through cavity in the hollow polyester fiber is circular or oval. The shape of the cavity is circular or oval in general, and the polyester fiber body can be ensured to have enough strength to be used as a mooring rope, so that the use safety of the polyester fiber body is ensured.
As an optional embodiment, in the hollow polyester fiber floating mooring rope, the particle size of the nano silver-loaded cuprous oxide antibacterial agent in the hollow polyester fiber is 20-50 nm.
As an alternative embodiment, the hollow polyester fiber floating mooring line is a twisted or braided line.
In some embodiments, the method for manufacturing the hollow polyester fiber floating mooring rope specifically comprises:
(1) granulating the polyester slices, the ethylene-vinyl acetate copolymer, the antioxidant 1010, the auxiliary antioxidant DLTP and the nano silver-loaded cuprous oxide antibacterial agent in a granulator to obtain a polyester modified composite material;
(2) the polyester modified composite material is subjected to melt spinning by a double-screw extruder, and an extrudate is metered by a metering pump arranged at a double-screw outlet and is subjected to melt extrusion from a special-shaped spinneret plate; the profiled spinneret plate comprises a plurality of regularly distributed spinneret holes, wherein a plurality of hollow tubes which are symmetrically distributed by the centers of the hollow tubes are arranged in the spinneret holes and are used for forming a through cavity in the hollow polyester fiber;
(3) cooling and solidifying by circular blowing, entering a spinning channel, carrying out oil feeding treatment and interlacing, stretching by four pairs of hot rollers, rolling by using a yarn collecting machine, and controlling the hollow rate of the hollow polyester fiber by controlling the cooling and solidifying distance L of the hollow polyester fiber bundle to obtain a hollow polyester fiber bundle consisting of the hollow polyester fiber; wherein the cooling distance is set to be 20-45 mm, the stretching and winding speed is set to be 2800-3300 m/min, the total relaxation is 7-9%, the total stretching multiple is 5.0-7.1, the temperature of a first pair of hot rollers is set to be 70-95 ℃, the temperature of a second pair of hot rollers is set to be 110-130 ℃, the temperature of a third pair of hot rollers is set to be 190-220 ℃, and the temperature of a fourth pair of hot rollers is set to be 110-140 ℃;
(4) the hollow polyester fiber tows are subjected to primary twisting and secondary twisting to obtain hollow polyester fiber strands;
(5) and manufacturing the hollow polyester fiber rope strands into a fiber twisted rope or a fiber braided rope by using a twisting machine or a braiding machine.
In the manufacturing process of the hollow polyester fiber, the strength of the hollow polyester fiber can be controlled by controlling the stretching multiple of the hot roller in the process of shaping the molten polyester modified composite material from the profiled spinneret plate base, and the hollow structure of the hollow polyester fiber can be formed, and as an optional implementation mode, the total stretching multiple is controlled to be 5.0-7.1, so that the hollow polyester fiber filament with excellent performance can be prepared.
Usually, a plurality of pipelines are arranged in a spinneret orifice arranged on the profiled spinneret plate to form a plurality of cavities, inert gas is introduced in the spinneret orifice in the spinneret process to prevent molten polyester compounds or impurities from being attached to the spinneret orifice, and effective cavities can be formed in the polyester fibers, and the number, size, shape and the like of the cavities can be controlled usually so as to control the hollow ratio of the hollow polyester fibers within a proper range. The through cavities are symmetrically distributed, so that a stable bridging part is formed between the through cavities, and the structural strength of the spinneret orifice is improved.
Generally, the hollow rate of the hollow fiber can be controlled by controlling the distance L of the cooled and solidified filament bundle, wherein the distance L is the distance between the solidified point of the filament bundle and the spinneret plate), for example, the range of 20mm L45 mm is more preferable; generally, the method for regulating and controlling the cooling and solidifying distance L of the tows comprises controlling the speed of circular blowing, for example, the wind speed of the cooling wind is in a preferred range of 0.4-1 m/s, the wind speed of the cooling wind is in a more preferred range of 0.4-0.7 m/s, and the cooling and solidifying distance L can also be controlled by controlling the temperature of the circular blowing, for example, the temperature of the circular blowing can be controlled below 215 ℃, and the more preferred temperature is 180-210 ℃.
Some embodiments disclose a method for manufacturing a hollow polyester fiber floating mooring rope, wherein the intrinsic viscosity of a polyester chip is 0.90-1.05 dl/g, the content of terminal carboxylic acid is 25mol/t, and the content of diethylene glycol is less than 1.2%.
Some embodiments disclose a method for manufacturing a hollow polyester fiber floating mooring rope, wherein the initial melting point of the antioxidant 1010 is not less than 110 ℃, the volatile matter content is not more than 0.5%, and the ash content is not more than 0.1%.
In some embodiments, the hollow polyester fiber floating mooring rope has an auxiliary antioxidant DLTP with an acid value of not more than 0.05mg KOH/g.
Some embodiments disclose a method for making a hollow polyester fiber floating mooring line, wherein the ethylene-vinyl acetate copolymer has a brittleness temperature of less than-60 ℃.
The technical details are further illustrated in the following examples.
Example 1
Three-strand hollow polyester fiber floating mooring twisted rope
The manufacturing process of the three-strand hollow polyester fiber floating mooring twisted rope comprises the following steps:
(1) granulating the polyester slices, the ethylene-vinyl acetate copolymer, the antioxidant 1010, the auxiliary antioxidant DLTP and the nano silver-loaded cuprous oxide antibacterial agent in a granulator to obtain a polyester modified composite material; wherein the intrinsic viscosity of the polyester chip is 0.90dl/g, the content of terminal carboxylic acid is 25mol/t, and the content of diethylene glycol is less than 1.2 percent; the mass of the ethylene-vinyl acetate copolymer is 1.2 per mill of the mass of the polyester chip, and the brittleness temperature is lower than minus 60 ℃; the mass of the antioxidant 1010 is 0.1 per mill of the mass of the polyester chip, the initial melting point is not less than 110 ℃, the volatile content is not more than 0.5 percent, and the ash content is not more than 0.1 percent; the mass of the auxiliary antioxidant DLTP is 0.5 per mill of the mass of the polyester chip, and the acid value is not more than 0.05mg KOH/g; the nano silver-loaded cuprous oxide antibacterial agent has the mass of 0.1 per mill of the mass of the polyester chip and the granularity of 20-50 nm;
(2) the polyester modified composite material is subjected to melt spinning by a double-screw extruder, and an extrudate is metered by a metering pump arranged at a double-screw outlet and is subjected to melt extrusion from a special-shaped spinneret plate; the profiled spinneret plate comprises a plurality of regularly distributed circular spinneret holes, wherein a plurality of elliptical hollow tubes are symmetrically distributed in the spinneret holes by the centers of the four elliptical hollow tubes, and are used for forming elliptical through cavities in hollow polyester fibers;
(3) cooling and solidifying by circular blowing, entering a spinning channel, carrying out oil feeding treatment and interlacing, stretching by four pairs of hot rollers, winding by using a yarn collecting machine, and controlling the hollow rate of hollow polyester fibers by controlling the cooling and solidifying distance L of the hollow polyester fiber strands to obtain hollow polyester fiber strands consisting of the hollow polyester fibers, wherein the hollow rate of the hollow polyester fibers is 37 percent, and the specification is 1100dtex/96 f; wherein the cooling distance was set to 30mm, the stretch winding speed was set to 2800m/min, the total relaxation was 7%, the total stretch ratio was 5.0, the temperature of the first pair of hot rolls was set to 70 ℃, the temperature of the second pair of hot rolls was set to 110 ℃, the temperature of the third pair of hot rolls was set to 190 ℃, and the temperature of the fourth pair of hot rolls was set to 110 ℃;
(4) the hollow polyester fiber tows are subjected to primary twisting and secondary twisting to obtain hollow polyester fiber strands; the first twist degree is set to be 80 twists/m, and the second twist degree is set to be 110 twists/m;
(5) the hollow polyester fiber rope strands are made into three-strand hollow polyester fiber floating mooring twisted ropes by a three-strand rope twisting machine, the specification is 150mm, and the breaking strength is 6180 kN.
Fig. 1 is a schematic structural view of a hollow polyester fiber floating mooring three-strand rope disclosed in example 1.
And (3) testing the floatability: a section of 20cm three strands of hollow polyester fiber floating mooring twisted ropes are taken, two ends of each hollow polyester fiber floating mooring twisted rope are tied up, the hollow polyester fiber floating mooring twisted rope is placed into water, and the hollow polyester fiber floating mooring twisted rope stands for 24 hours, 1 week and 4 weeks to observe the floating state in the water, so that the three strands of hollow polyester fiber floating mooring twisted ropes in the embodiment 1 are good in floating performance, and float on the water surface after standing for 4 weeks without sinking into the water.
Example 2
Eight-strand hollow polyester fiber single braided rope for floating mooring
The manufacturing process of the eight-strand hollow polyester fiber floating mooring single braided rope comprises the following steps:
(1) granulating the polyester slices, the ethylene-vinyl acetate copolymer, the antioxidant 1010, the auxiliary antioxidant DLTP and the nano silver-loaded cuprous oxide antibacterial agent in a granulator to obtain a polyester modified composite material; wherein the intrinsic viscosity of the polyester chip is 1.05dl/g, the content of terminal carboxylic acid is 25mol/t, and the content of diethylene glycol is less than 1.2 percent; the mass of the ethylene-vinyl acetate copolymer is 3.5 per mill of that of the polyester chip, and the brittleness temperature is lower than minus 60 ℃; the mass of the antioxidant 1010 is 2.0 per mill of the mass of the polyester chip, the initial melting point is not less than 110 ℃, the volatile content is not more than 0.5 percent, and the ash content is not more than 0.1 percent; the mass of the auxiliary antioxidant DLTP is 1.2 per mill of the mass of the polyester chip, and the acid value is not more than 0.05mg KOH/g; the mass of the nano silver-loaded cuprous oxide antibacterial agent is 2.0 per mill of the mass of the polyester chip, and the granularity is 20-50 nm;
(2) the polyester modified composite material is subjected to melt spinning by a double-screw extruder, and an extrudate is metered by a metering pump arranged at a double-screw outlet and is subjected to melt extrusion from a special-shaped spinneret plate; the profiled spinneret plate comprises a plurality of regularly distributed circular spinneret holes, wherein a plurality of elliptical hollow tubes are symmetrically distributed in the spinneret holes by the centers of the four elliptical hollow tubes, and are used for forming elliptical through cavities in hollow polyester fibers;
(3) cooling and solidifying by circular blowing, entering a spinning channel, carrying out oil feeding treatment and interlacing, stretching by four pairs of hot rollers, winding by using a yarn collecting machine, and controlling the hollow rate of hollow polyester fibers by controlling the cooling and solidifying distance L of the hollow polyester fiber strands to obtain hollow polyester fiber strands consisting of the hollow polyester fibers, wherein the hollow rate of the hollow polyester fibers is 28 percent and the specification is 1100dtex/96 f; wherein the cooling distance is set to 40mm, the stretch winding speed is set to 3300m/min, the total relaxation is 9%, the total stretch ratio is 7.1, the temperature of the first pair of hot rolls is set to 95 ℃, the temperature of the second pair of hot rolls is set to 130 ℃, the temperature of the third pair of hot rolls is set to 210 ℃, and the temperature of the fourth pair of hot rolls is set to 120 ℃;
(4) the hollow polyester fiber tows are circularly twisted into rope yarns on a 250-ring twisting machine, the twist is set to be 100 twists/m, and the twisting directions comprise an S direction and a Z direction, so that the S-direction rope yarns and the Z-direction rope yarns are obtained; the rope yarns are re-twisted into rope strands on a 722-type ring twister, the twist degree is set to be 80 twists/m, the twisting direction comprises an S direction and a Z direction, and the S-direction rope strands and the Z-direction rope strands are obtained;
(5) and (3) knitting by using a large cable knitting machine, knitting the hollow polyester fiber rope strands to form eight-strand hollow polyester fiber floating mooring single braided ropes with the specification of 112mm and the breaking strength of 1920 kN.
And (3) testing the floatability: a section of 20cm eight strands of hollow polyester fiber floating mooring single braided ropes are taken, two ends of each rope are tied up, the ropes are placed into water, and the floating state in the water is observed after standing for 24 hours, 1 week and 4 weeks.
The hollow polyester fiber floating mooring rope disclosed by the embodiment of the application has the advantages that the specific amount of antioxidants, nano silver-loaded cuprous oxide antibacterial agents and other auxiliaries are added into the master batch in the hollow polyester fiber, the raw material composition of the fiber yarns, the flowability and spinnability of spinning are optimized, the smooth and smooth spinning production is ensured, the obtained hollow polyester fiber filament has no broken yarn phenomenon, compared with the existing polypropylene rope, the wear-resisting revolution of the obtained hollow polyester fiber floating mooring rope is improved by more than 10%, the breaking strength is improved by more than 5%, the adhesion area of fouling organisms on the surface of the mooring rope is reduced by more than 6%, and the hollow polyester fiber floating mooring rope has the technical effects of excellent wear resistance, higher breaking strength and better antibacterial and antifouling effects, and has excellent ultraviolet resistance, improved safety performance, low production cost and good application prospect in the technical field of mooring ropes.
The technical solutions and the technical details disclosed in the embodiments of the present application are only examples to illustrate the inventive concept of the present application, and do not constitute limitations on the technical solutions of the present application, and all the inventive changes, substitutions, or combinations that are made to the technical details disclosed in the present application without creativity are the same as the inventive concept of the present application and are within the protection scope of the claims of the present application.
Claims (4)
1. The hollow polyester fiber floating mooring rope is characterized in that the floating mooring rope is a fiber rope made of hollow polyester fibers, a plurality of through cavities are formed in the hollow polyester fibers and distributed along the axial direction of the hollow polyester fibers, the through cavities are identical in shape and symmetrically distributed by taking the center of the hollow polyester fibers as a symmetry axis, the hollow ratio of the hollow polyester fibers is 25-40%, and the density of the hollow polyester fibers is 0.95-1.00g/cm3。
2. The hollow polyester fiber floating mooring line according to claim 1, wherein the number of the through cavities is set to 3 or 4.
3. The hollow polyester fiber floating mooring line of claim 1, wherein the through cavity is circular or elliptical in shape.
4. The hollow polyester fiber floating mooring line of claim 1, wherein the hollow polyester fiber floating mooring line is a twisted or braided rope.
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| CN202023235536.1U CN215164111U (en) | 2020-12-28 | 2020-12-28 | Hollow polyester fiber floating mooring rope |
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| CN202023235536.1U CN215164111U (en) | 2020-12-28 | 2020-12-28 | Hollow polyester fiber floating mooring rope |
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