EP3783149A1 - Verfahren zur herstellung eines faserseils und entsprechendes faserseil - Google Patents

Verfahren zur herstellung eines faserseils und entsprechendes faserseil Download PDF

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Publication number
EP3783149A1
EP3783149A1 EP19382716.9A EP19382716A EP3783149A1 EP 3783149 A1 EP3783149 A1 EP 3783149A1 EP 19382716 A EP19382716 A EP 19382716A EP 3783149 A1 EP3783149 A1 EP 3783149A1
Authority
EP
European Patent Office
Prior art keywords
mesh
filaments
twisted
rope
strand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19382716.9A
Other languages
English (en)
French (fr)
Other versions
EP3783149B1 (de
EP3783149C0 (de
Inventor
François MOUCHET
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intermas Nets SA
Original Assignee
Intermas Nets SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intermas Nets SA filed Critical Intermas Nets SA
Priority to ES19382716T priority Critical patent/ES2950652T3/es
Priority to EP19382716.9A priority patent/EP3783149B1/de
Publication of EP3783149A1 publication Critical patent/EP3783149A1/de
Application granted granted Critical
Publication of EP3783149B1 publication Critical patent/EP3783149B1/de
Publication of EP3783149C0 publication Critical patent/EP3783149C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/1014—Rope or cable structures characterised by their internal structure characterised by being laid or braided from several sub-ropes or sub-cables, e.g. hawsers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/1016—Rope or cable structures characterised by their internal structure characterised by the use of different strands
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/104—Rope or cable structures twisted
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1096—Rope or cable structures braided
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2034—Strands comprising crossing wires or filaments in the same layer
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/10—Natural organic materials
    • D07B2205/103—Animal and plant materials
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2003—Thermoplastics
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/201—Polyolefins
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2028—Polyvinyl alcohols
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2038—Agriculture, forestry and fishery
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/02—Making ropes or cables from special materials or of particular form from straw or like vegetable material

Definitions

  • the invention relates to a method of manufacturing a rope formed by a plurality of filaments, and to a rope which can be obtained by means of said manufacturing method.
  • Conventional rope manufacturing methods consist of twisting a plurality of filaments together to form a strand, and then twisting or braiding said strands together to form the rope or cords which are in turn twisted or braided to form the rope.
  • the step of forming the strands is complex as there is a need to handle a large amount of filaments with a relatively small diameter.
  • These filaments are driven by a system consisting of reels and rollers, which adjust the tautness of the filaments and keep them separated so that they do not become tangled, to a twisting machine, in which the filaments are twisted together to form the strand.
  • This method of forming the strands, and accordingly a rope made of said strands, is laborious and complex because filaments of very small diameter which may become damaged and/or tangled are handled individually.
  • the purpose of the invention is to provide a method of manufacturing a rope formed by a plurality of strands of filaments, the practical implementation of which is easier than that of conventional methods, without thereby compromising the physical and mechanical characteristics of the rope that is obtained.
  • Another objective of the invention is to provide a rope formed by a plurality of strands of filaments, which is more robust than ropes obtained by means of the conventional manufacturing methods.
  • a mesh to form a strand of the rope constitutes a notable simplification with respect to the conventional rope manufacturing methods because it prevents having to handle a plurality of independent filaments that must be arranged in a specific manner required for forming a strand from said filaments.
  • a strand of the rope is formed by simply twisting a mesh.
  • the mesh is formed by a plurality of filaments, but these filaments are attached to one another at their intersecting points in the mesh, so it is not necessary to handle them individually.
  • a rope obtained by means of the method according to the invention is more robust than a rope obtained by means of a conventional method, because the filaments of the twisted mesh forming a strand are attached to one another at their intersecting points. If breakage of one of the filaments of this strand occurs while using the rope, said breakage does not at all affect the constitution of the strand or the characteristics of the rope, because the filament that broke is still attached to the other filaments of the strand through the intersecting points between the filaments of the mesh.
  • the mesh which is provided in step [a] and twisted in step [b] to form the strand of twisted mesh can be a woven mesh, in which case the filaments of the mesh are attached to one another by means of weaving at their intersecting points.
  • said mesh is an extruded mesh, in which the filaments of one of said two bundles are attached to the filaments of the other one of said two bundles at the intersecting points by means of fusion of the material forming said filaments.
  • the extruded mesh which is provided in step [a] and twisted in step [b] to form the strand of twisted mesh is a mesh in which the filaments of the two bundles of filaments and the intersecting points have one and the same thickness.
  • This mesh can be, for example, a mesh hot-flattened at the outlet of the extruder, obtained by means of the method described in document EP2006077B1 . Even more compact and robust strands of twisted mesh are thereby created because the mesh has no protuberances at the intersecting points of the filaments.
  • said extruded mesh which is provided in step [a] and twisted in step [b] to form the strand of twisted mesh is a tubular mesh.
  • a tubular mesh is easier to handle than a flat mesh.
  • the tubular mesh can be stretched in the longitudinal direction thereof before twisting, thereby obtaining a shape similar to the shape of a rope. This allows twisting using conventional equipment or equipment with inexpensive adaptations. Furthermore, by using a tubular mesh a strand of twisted mesh with a more homogenous shape is obtained. Another advantage is that extruded meshes usually already have a tubular shape at the outlet of the extruder.
  • the mesh which is provided in step [a] and twisted in step [b] to form the strand of twisted mesh can be a mesh of extruded filaments of any thermoplastic suitable for forming extruded filaments.
  • the thermoplastic forming the filaments of the extruded mesh can be one selected from the group consisting of:
  • the mesh which is provided in step [a] and twisted in step [b] to form the strand of twisted mesh is a mesh of filaments of a material that can be extruded to form the filaments, comprising at least one biodegradable thermoplastic.
  • said mesh is an extruded mesh in which the filaments are attached at the intersecting points by means of fusion of the material forming said filaments. This allows manufacturing a rope made entirely or partially from a biodegradable thermoplastic by means of a method that is much more reliable than the known methods.
  • the strands of the rope are formed by means of twisting or braiding a plurality of independent filaments together, and each of these filaments must be obtained individually in an extrusion line.
  • Extruding a filament of biodegradable thermoplastic, or an extrudable material comprising a biodegradable thermoplastic is a delicate process, because a high temperature is required in the extruder, and this high temperature degrades the properties of the biodegradable thermoplastic.
  • a lower extrusion temperature which does not negatively affect the properties of the biodegradable thermoplastic, is required.
  • a rope made with biodegradable thermoplastic is of special interest for reducing environmental impact in cases in which the rope may constitute waste. For example, it is special interest in the field of oyster farming in which the rope, or a rig manufactured with same, may be lost to the sea.
  • said biodegradable thermoplastic is one selected from the group consisting of polylactic acid (PLA), polyhydroxybutyrate (PHB), polyhydroxyvalerate (PHV), polybutylene succinate (PBS), polycaprolactone (PCL), polybutylene adipate terephthalate (PBAT), polyvinyl alcohol (PVOH), a starch-derived bioplastic.
  • the starch-derived bioplastic can be, for example, a corn, potato, wheat, or cassava starch-derived bioplastic.
  • the extrudable material forming the filaments of the mesh may contain, in addition to a thermoplastic, additives and/or dyes.
  • a thermoplastic is a biodegradable thermoplastic, it is preferably mixed with a biodegradable additive based on a compound with a high mineral content, such as calcium carbonate, talc, kaolin, mica, or glass fiber, for example.
  • the composition of a plurality of strands of the rope formed in step [c] consists of at least one strand of twisted extruded mesh of an extrudable material comprising at least one biodegradable thermoplastic, formed in step [b], and at least one strand of natural fibers.
  • these natural fibers are of plant origin, for example, cotton, flax, hemp, coconut, kapok, jute, sisal, or abaca fibers.
  • the fibers can also be of animal origin, for example, sheep wool, alpaca wool, or silk.
  • a composition consisting of strands of twisted extruded mesh having a biodegradable thermoplastic and of strands of natural fibers allows obtaining a rope with good mechanical properties and a lower environmental impact.
  • the invention also relates to a rope which can be obtained by means of the manufacturing method described above.
  • the rope according to the invention is formed by a plurality of strands of filaments and comprises a composition of a plurality of strands from the group consisting of a twist, a braid, and a combination of twist and braid.
  • the rope is characterized in that at least one of said strands of said plurality of strands forming said composition is a strand of twisted mesh, formed by a mesh twisted upon itself, said mesh comprising at least two bundles of extruded filaments extending in different directions and intersecting with one another at intersecting points, the filaments of one of said two bundles being attached to the filaments of the other one of said two bundles at said intersecting points.
  • the mesh forming the strand of twisted mesh is an extruded mesh in which the filaments of one of the two bundles are attached to the filaments of the other one of the two bundles at the intersecting points by means of fusion of the material forming said filaments.
  • the mesh forming the strand of twisted mesh is a mesh in which the filaments of the two bundles of filaments and the intersecting points have one and the same thickness.
  • the mesh forming the strand of twisted mesh is a tubular mesh.
  • the mesh forming the strand of twisted mesh is an extruded mesh of a biodegradable thermoplastic.
  • This biodegradable thermoplastic is any of those mentioned above in the description of the method.
  • the composition of a plurality of strands of the rope consists of at least one strand of twisted extruded mesh of an extrudable material comprising at least one biodegradable thermoplastic, and at least one strand of natural fibers.
  • These natural fibers are any of those mentioned above in the description of the method.
  • the method of manufacturing a rope 1 according to the invention and the rope 1 obtained therewith have, as an essential feature, the use of a mesh 2 twisted to form a strand 5 of said rope 1.
  • the mesh 2 is a mesh of a known type formed by bundles of extruded filaments 3 extending in different directions and intersecting with one another at intersecting points 4.
  • the filaments 3 of one of the bundles are attached to the filaments 3 of the other bundle at intersecting points 4.
  • Figures 1 to 3 show an example of a mesh 2 used in the method.
  • the mesh 2 is an extruded tubular thermoplastic mesh, in which the filaments 3 of one of the bundles are attached to the filaments 3 of the other bundle at intersecting points 4 by means of fusion of the thermoplastic forming said filaments 3.
  • the mesh 2 forms a diamond-shaped weft of filaments 3, like the one shown in Figure 2 , and was hot-stretched in its longitudinal direction. Furthermore, the mesh 2 was preferably hot-flattened to prevent the excessive thickness created at the outlet of the extruder at intersecting points 4, such that the filaments 3 of the two bundles and the intersecting points 4 have one and the same thickness, as can be seen in Figure 4 .
  • the mesh 2 can also have, for example, a rectangular- or square-shaped weft of filaments 3, like the one shown in Figure 4 .
  • the method of manufacturing meshes 2 of this type, like those shown in Figures 1 to 4 is known by one skilled in the art. It is described, for example, in document EP2006077B1 .
  • Figure 5 schematically shows the process of twisting the mesh 2 to form a strand 5 of twisted mesh.
  • This process of twisting the mesh 2 does not present any technical difficulties; it can be performed by means of a known installation of the types conventionally used for twisting strands and cords in industrial rope manufacture.
  • the tubular mesh 2 is first stretched in the longitudinal direction thereof so that it adopts a more compact shape, and the said mesh 2 is twisted around an axis coinciding with the longitudinal direction thereof.
  • the twist applied (number of turns applied per unit of length) in the strand 5 of mesh 2 depends on the compactness to be achieved and on the type of mesh 2 used, particularly the number of filaments 3 and the thickness thereof.
  • the strand 5 thus obtained has a consistency that is better than the consistency of a strand formed by means of a conventional method of twisting a plurality of independent filaments together.
  • the strands 5 of twisted mesh obtained in the preceding step are arranged in moving reels 7 of an installation 8 for manufacturing ropes by means of braiding or twisting the strands.
  • This installation 8 can be a conventional installation for manufacturing ropes, with the difference that each reel 7, instead of being loaded with a strand formed by independent filaments twisted together, is loaded with a strand 5 of twisted mesh, formed by twisting a mesh 2 as described above.
  • the reels 7 move following predetermined movements for forming a rope 1 by braiding or twisting the strands loaded in said reels 7.
  • these strands are strands 5 of twisted mesh.
  • the rope 1 is thereby formed by making a composition from strands 5 of twisted mesh, wherein said composition can be a twist, a braid, and a combination of twist and braid, depending on the movements of the reels 7.
  • FIGs 7, 8, and 9 show, by way of example, three ropes 1 according to the invention which can be obtained by means of the method described above.
  • the rope 1 of Figure 7 is formed by several strands 5 of twisted mesh braided together.
  • the rope 1 of Figure 8 is formed by several strands 5 of twisted mesh twisted together.
  • the rope 1 of Figure 9 is formed by several cords 6 twisted together, and each of these cords 6 is formed by a plurality of strands 5 of twisted mesh braided together.
  • a rope according to the invention in which the rope has at least one composition of a plurality of strands consisting of a twist, a braid, or a combination of braid and twist, and at least one of said strands of the composition is a strand 5 of twisted mesh, are possible.
  • the rope can have other elements, such as a cover, a core, as well as other strands that are not a strand of mesh, for example.
  • the extrudable material forming the mesh 2 forming the strand 5 of twisted mesh can be any of those indicated above in the description of the invention.
  • it can be polyethylene (PE), among other possibilities.
  • PE polyethylene
  • it is an extrudable material that contains a biodegradable thermoplastic and may have additives and/or dyes.
  • said extrudable material can have the following composition by weight: 80% of polylactic acid (PLA) and 20% of an additive with a high mineral content.
  • the additive is a masterbatch with the following composition by weight: 80% of calcium carbonate and 20% of polyhydroxyalkanoate (PHA).
  • the composition of a plurality of strands in a rope 1 can combine one or more strands 5 of twisted extruded mesh of an extrudable material comprising a biodegradable thermoplastic and one or more strands of natural fibers, preferably fibers of plant origin.
  • some of the strands of the ropes 1 shown in the drawings are strands 5 of twisted extruded mesh of an extrudable material containing a biodegradable thermoplastic, for example the material indicated above (80% of PLA and 20% of additive compound by 80% of calcium carbonate and 20% of PHA), whereas other strands of the same rope 1 are strands of natural fiber, for example coconut fiber.

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  • Ropes Or Cables (AREA)
EP19382716.9A 2019-08-19 2019-08-19 Verfahren zur herstellung eines faserseils und entsprechendes faserseil Active EP3783149B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES19382716T ES2950652T3 (es) 2019-08-19 2019-08-19 Procedimiento de fabricación de una cuerda, y cuerda correspondiente
EP19382716.9A EP3783149B1 (de) 2019-08-19 2019-08-19 Verfahren zur herstellung eines faserseils und entsprechendes faserseil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19382716.9A EP3783149B1 (de) 2019-08-19 2019-08-19 Verfahren zur herstellung eines faserseils und entsprechendes faserseil

Publications (3)

Publication Number Publication Date
EP3783149A1 true EP3783149A1 (de) 2021-02-24
EP3783149B1 EP3783149B1 (de) 2023-07-12
EP3783149C0 EP3783149C0 (de) 2023-07-12

Family

ID=67999594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19382716.9A Active EP3783149B1 (de) 2019-08-19 2019-08-19 Verfahren zur herstellung eines faserseils und entsprechendes faserseil

Country Status (2)

Country Link
EP (1) EP3783149B1 (de)
ES (1) ES2950652T3 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164948A (en) * 1963-02-28 1965-01-12 Wall Rope Works Inc Cordage and methods of manufacture thereof
US3273329A (en) * 1963-07-25 1966-09-20 Scragg & Sons Textile yarns
US3380243A (en) * 1965-07-26 1968-04-30 American Mfg Company Inc Plastic cordage
GB1232450A (de) * 1967-06-18 1971-05-19
EP2006077A2 (de) 2006-04-10 2008-12-24 Intermas Nets, S.A. Verfahren zur formung eines netzartigen materials, anlage zur umsetzung des verfahrens und netzartiges material aus dem verfahren
US20150152593A1 (en) * 2011-12-19 2015-06-04 Dsm Ip Assets B.V. Rope comprising at least one fibrillated film tape

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164948A (en) * 1963-02-28 1965-01-12 Wall Rope Works Inc Cordage and methods of manufacture thereof
US3273329A (en) * 1963-07-25 1966-09-20 Scragg & Sons Textile yarns
US3380243A (en) * 1965-07-26 1968-04-30 American Mfg Company Inc Plastic cordage
GB1232450A (de) * 1967-06-18 1971-05-19
EP2006077A2 (de) 2006-04-10 2008-12-24 Intermas Nets, S.A. Verfahren zur formung eines netzartigen materials, anlage zur umsetzung des verfahrens und netzartiges material aus dem verfahren
US20150152593A1 (en) * 2011-12-19 2015-06-04 Dsm Ip Assets B.V. Rope comprising at least one fibrillated film tape

Also Published As

Publication number Publication date
ES2950652T3 (es) 2023-10-11
EP3783149B1 (de) 2023-07-12
EP3783149C0 (de) 2023-07-12

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